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-rw-r--r--v1.74/.nojekyll1
-rw-r--r--v1.74/.sample_config_header.yaml12
-rw-r--r--v1.74/404.html17
-rw-r--r--v1.74/CAPTCHA_SETUP.html17
-rw-r--r--v1.74/admin_api/account_validity.html17
-rw-r--r--v1.74/admin_api/event_reports.html17
-rw-r--r--v1.74/admin_api/media_admin_api.html17
-rw-r--r--v1.74/admin_api/purge_history_api.html17
-rw-r--r--v1.74/admin_api/register_api.html17
-rw-r--r--v1.74/admin_api/room_membership.html17
-rw-r--r--v1.74/admin_api/rooms.html17
-rw-r--r--v1.74/admin_api/server_notices.html17
-rw-r--r--v1.74/admin_api/statistics.html17
-rw-r--r--v1.74/admin_api/user_admin_api.html17
-rw-r--r--v1.74/admin_api/version_api.html17
-rw-r--r--v1.74/application_services.html17
-rw-r--r--v1.74/auth_chain_difference_algorithm.html17
-rw-r--r--v1.74/code_style.html17
-rw-r--r--v1.74/consent_tracking.html17
-rw-r--r--v1.74/delegate.html17
-rw-r--r--v1.74/deprecation_policy.html17
-rw-r--r--v1.74/development/cas.html17
-rw-r--r--v1.74/development/contributing_guide.html17
-rw-r--r--v1.74/development/database_schema.html17
-rw-r--r--v1.74/development/demo.html17
-rw-r--r--v1.74/development/dependencies.html17
-rw-r--r--v1.74/development/experimental_features.html17
-rw-r--r--v1.74/development/git.html17
-rw-r--r--v1.74/development/internal_documentation/index.html17
-rw-r--r--v1.74/development/releases.html17
-rw-r--r--v1.74/development/reviews.html17
-rw-r--r--v1.74/development/room-dag-concepts.html17
-rw-r--r--v1.74/development/saml.html17
-rw-r--r--v1.74/development/synapse_architecture/cancellation.html17
-rw-r--r--v1.74/docs/website_files/version-picker.css78
-rw-r--r--v1.74/docs/website_files/version-picker.js127
-rw-r--r--v1.74/docs/website_files/version.js1
-rw-r--r--v1.74/federate.html17
-rw-r--r--v1.74/index.html17
-rw-r--r--v1.74/jwt.html17
-rw-r--r--v1.74/log_contexts.html17
-rw-r--r--v1.74/manhole.html17
-rw-r--r--v1.74/media_repository.html17
-rw-r--r--v1.74/message_retention_policies.html17
-rw-r--r--v1.74/metrics-howto.html17
-rw-r--r--v1.74/modules/account_data_callbacks.html17
-rw-r--r--v1.74/modules/account_validity_callbacks.html17
-rw-r--r--v1.74/modules/background_update_controller_callbacks.html17
-rw-r--r--v1.74/modules/index.html17
-rw-r--r--v1.74/modules/password_auth_provider_callbacks.html17
-rw-r--r--v1.74/modules/porting_legacy_module.html17
-rw-r--r--v1.74/modules/presence_router_callbacks.html17
-rw-r--r--v1.74/modules/spam_checker_callbacks.html17
-rw-r--r--v1.74/modules/third_party_rules_callbacks.html17
-rw-r--r--v1.74/modules/writing_a_module.html17
-rw-r--r--v1.74/openid.html17
-rw-r--r--v1.74/opentracing.html17
-rw-r--r--v1.74/other/running_synapse_on_single_board_computers.html17
-rw-r--r--v1.74/password_auth_providers.html17
-rw-r--r--v1.74/postgres.html17
-rw-r--r--v1.74/print.html17
-rw-r--r--v1.74/replication.html17
-rw-r--r--v1.74/reverse_proxy.html17
-rw-r--r--v1.74/room_and_user_statistics.html17
-rw-r--r--v1.74/server_notices.html17
-rw-r--r--v1.74/setup/forward_proxy.html17
-rw-r--r--v1.74/setup/installation.html17
-rw-r--r--v1.74/setup/turn/coturn.html17
-rw-r--r--v1.74/setup/turn/eturnal.html17
-rw-r--r--v1.74/sso_mapping_providers.html17
-rw-r--r--v1.74/structured_logging.html17
-rw-r--r--v1.74/synctl_workers.html17
-rw-r--r--v1.74/systemd-with-workers/index.html17
-rw-r--r--v1.74/tcp_replication.html17
-rw-r--r--v1.74/templates.html17
-rw-r--r--v1.74/turn-howto.html17
-rw-r--r--v1.74/upgrade.html17
-rw-r--r--v1.74/usage/administration/admin_api/background_updates.html17
-rw-r--r--v1.74/usage/administration/admin_api/federation.html17
-rw-r--r--v1.74/usage/administration/admin_api/index.html17
-rw-r--r--v1.74/usage/administration/admin_api/registration_tokens.html17
-rw-r--r--v1.74/usage/administration/admin_faq.html17
-rw-r--r--v1.74/usage/administration/database_maintenance_tools.html17
-rw-r--r--v1.74/usage/administration/index.html17
-rw-r--r--v1.74/usage/administration/monitoring/reporting_homeserver_usage_statistics.html17
-rw-r--r--v1.74/usage/administration/monthly_active_users.html17
-rw-r--r--v1.74/usage/administration/request_log.html17
-rw-r--r--v1.74/usage/administration/state_groups.html17
-rw-r--r--v1.74/usage/administration/understanding_synapse_through_grafana_graphs.html17
-rw-r--r--v1.74/usage/administration/useful_sql_for_admins.html17
-rw-r--r--v1.74/usage/configuration/config_documentation.html17
-rw-r--r--v1.74/usage/configuration/homeserver_sample_config.html17
-rw-r--r--v1.74/usage/configuration/index.html17
-rw-r--r--v1.74/usage/configuration/logging_sample_config.html17
-rw-r--r--v1.74/usage/configuration/user_authentication/index.html17
-rw-r--r--v1.74/usage/configuration/user_authentication/refresh_tokens.html17
-rw-r--r--v1.74/usage/configuration/user_authentication/single_sign_on/cas.html17
-rw-r--r--v1.74/usage/configuration/user_authentication/single_sign_on/index.html17
-rw-r--r--v1.74/usage/configuration/user_authentication/single_sign_on/saml.html17
-rw-r--r--v1.74/user_directory.html17
-rw-r--r--v1.74/website_files/theme/index.hbs14
-rw-r--r--v1.74/website_files/version-picker.css78
-rw-r--r--v1.74/website_files/version-picker.js127
-rw-r--r--v1.74/website_files/version.js1
-rw-r--r--v1.74/welcome_and_overview.html17
-rw-r--r--v1.74/workers.html17
106 files changed, 1977 insertions, 111 deletions
diff --git a/v1.74/.nojekyll b/v1.74/.nojekyll
deleted file mode 100644
index f17311098f..0000000000
--- a/v1.74/.nojekyll
+++ /dev/null
@@ -1 +0,0 @@
-This file makes sure that Github Pages doesn't process mdBook's output.
diff --git a/v1.74/.sample_config_header.yaml b/v1.74/.sample_config_header.yaml
deleted file mode 100644
index 2355337e6d..0000000000
--- a/v1.74/.sample_config_header.yaml
+++ /dev/null
@@ -1,12 +0,0 @@
-# This file is maintained as an up-to-date snapshot of the default
-# homeserver.yaml configuration generated by Synapse. You can find a
-# complete accounting of possible configuration options at
-# https://matrix-org.github.io/synapse/latest/usage/configuration/config_documentation.html
-#
-# It is *not* intended to be copied and used as the basis for a real
-# homeserver.yaml. Instead, if you are starting from scratch, please generate
-# a fresh config using Synapse by following the instructions in
-# https://matrix-org.github.io/synapse/latest/setup/installation.html.
-#
-################################################################################
-
diff --git a/v1.74/404.html b/v1.74/404.html
index c127a64814..5fe2f0fc87 100644
--- a/v1.74/404.html
+++ b/v1.74/404.html
@@ -29,6 +29,7 @@
         <link rel="stylesheet" href="docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -104,6 +105,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -173,5 +186,7 @@
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/CAPTCHA_SETUP.html b/v1.74/CAPTCHA_SETUP.html
index 3c60b214ec..5686ee3f39 100644
--- a/v1.74/CAPTCHA_SETUP.html
+++ b/v1.74/CAPTCHA_SETUP.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -220,5 +233,7 @@ listeners section of the <code>homeserver.yaml</code> configuration file.</p>
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/admin_api/account_validity.html b/v1.74/admin_api/account_validity.html
index b7a27e0094..dff81b34fb 100644
--- a/v1.74/admin_api/account_validity.html
+++ b/v1.74/admin_api/account_validity.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -214,5 +227,7 @@ milliseconds since epoch:</p>
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/admin_api/event_reports.html b/v1.74/admin_api/event_reports.html
index 62f3d2e113..ad5fb26767 100644
--- a/v1.74/admin_api/event_reports.html
+++ b/v1.74/admin_api/event_reports.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -338,5 +351,7 @@ have a canonical alias set.</li>
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/admin_api/media_admin_api.html b/v1.74/admin_api/media_admin_api.html
index d1005372de..2ef1fd9c29 100644
--- a/v1.74/admin_api/media_admin_api.html
+++ b/v1.74/admin_api/media_admin_api.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -398,5 +411,7 @@ from the originating server.</p>
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/admin_api/purge_history_api.html b/v1.74/admin_api/purge_history_api.html
index bec236320b..b9fb49aece 100644
--- a/v1.74/admin_api/purge_history_api.html
+++ b/v1.74/admin_api/purge_history_api.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -234,5 +247,7 @@ a purge id:</p>
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/admin_api/register_api.html b/v1.74/admin_api/register_api.html
index 6469a9452e..eae07be033 100644
--- a/v1.74/admin_api/register_api.html
+++ b/v1.74/admin_api/register_api.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -259,5 +272,7 @@ def generate_mac(nonce, user, password, admin=False, user_type=None):
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/admin_api/room_membership.html b/v1.74/admin_api/room_membership.html
index ac593aca69..d4f052f7dc 100644
--- a/v1.74/admin_api/room_membership.html
+++ b/v1.74/admin_api/room_membership.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -211,5 +224,7 @@ for a server admin: see <a href="../usage/administration/admin_api">Admin API</a
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/admin_api/rooms.html b/v1.74/admin_api/rooms.html
index 8416ddc689..3643b66dee 100644
--- a/v1.74/admin_api/rooms.html
+++ b/v1.74/admin_api/rooms.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -1138,5 +1151,7 @@ that were deleted.</p>
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/admin_api/server_notices.html b/v1.74/admin_api/server_notices.html
index 03b1cc668e..a1089df42f 100644
--- a/v1.74/admin_api/server_notices.html
+++ b/v1.74/admin_api/server_notices.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -216,5 +229,7 @@ can be used. See <a href="../server_notices.html">the server notices documentati
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/admin_api/statistics.html b/v1.74/admin_api/statistics.html
index 68dc66f51e..1d94d7a43d 100644
--- a/v1.74/admin_api/statistics.html
+++ b/v1.74/admin_api/statistics.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -261,5 +274,7 @@ about the user and their local media. Objects contain the following fields:
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/admin_api/user_admin_api.html b/v1.74/admin_api/user_admin_api.html
index 5f4cc6c351..c8eb2bfd80 100644
--- a/v1.74/admin_api/user_admin_api.html
+++ b/v1.74/admin_api/user_admin_api.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -1229,5 +1242,7 @@ for more information.</p>
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/admin_api/version_api.html b/v1.74/admin_api/version_api.html
index ed06e76f63..ae7edba764 100644
--- a/v1.74/admin_api/version_api.html
+++ b/v1.74/admin_api/version_api.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -199,5 +212,7 @@ contains Synapse version information).</p>
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/application_services.html b/v1.74/application_services.html
index cf46f32dac..e6a1a77cc2 100644
--- a/v1.74/application_services.html
+++ b/v1.74/application_services.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -211,5 +224,7 @@ namespaces:
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/auth_chain_difference_algorithm.html b/v1.74/auth_chain_difference_algorithm.html
index 509f6ba3b5..d517ae2083 100644
--- a/v1.74/auth_chain_difference_algorithm.html
+++ b/v1.74/auth_chain_difference_algorithm.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -306,5 +319,7 @@ level).</li>
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/code_style.html b/v1.74/code_style.html
index c40c012932..d39fa5cb2a 100644
--- a/v1.74/code_style.html
+++ b/v1.74/code_style.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -308,5 +321,7 @@ is left as an exercise for the reader!</p>
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/consent_tracking.html b/v1.74/consent_tracking.html
index d29adb1fd9..aff557fa06 100644
--- a/v1.74/consent_tracking.html
+++ b/v1.74/consent_tracking.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -346,5 +359,7 @@ URI that clients use to connect to the server. (It is used to construct
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/delegate.html b/v1.74/delegate.html
index 3d5bc5477e..6a8b3cff60 100644
--- a/v1.74/delegate.html
+++ b/v1.74/delegate.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -257,5 +270,7 @@ reverse proxy.</p>
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/deprecation_policy.html b/v1.74/deprecation_policy.html
index 505d1bb7ec..4f148dc9e6 100644
--- a/v1.74/deprecation_policy.html
+++ b/v1.74/deprecation_policy.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -223,5 +236,7 @@ and is consistent with the <code>.deb</code> packages released by Matrix.org.</p
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/development/cas.html b/v1.74/development/cas.html
index d1afe72f5a..b16bd7bfd2 100644
--- a/v1.74/development/cas.html
+++ b/v1.74/development/cas.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -247,5 +260,7 @@ and that the CAS server is on port 8000, both on localhost.</p>
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/development/contributing_guide.html b/v1.74/development/contributing_guide.html
index 1560d03e9f..0eba3baaa0 100644
--- a/v1.74/development/contributing_guide.html
+++ b/v1.74/development/contributing_guide.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -612,5 +625,7 @@ do!</p>
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/development/database_schema.html b/v1.74/development/database_schema.html
index 5d830745e0..5bf33a8904 100644
--- a/v1.74/development/database_schema.html
+++ b/v1.74/development/database_schema.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -363,5 +376,7 @@ will never happen (SHA256 has a massive big key space).</p>
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/development/demo.html b/v1.74/development/demo.html
index 131c66d4ae..54fbdff95e 100644
--- a/v1.74/development/demo.html
+++ b/v1.74/development/demo.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -220,5 +233,7 @@ name.</p>
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/development/dependencies.html b/v1.74/development/dependencies.html
index a0823a71c6..6f8152c736 100644
--- a/v1.74/development/dependencies.html
+++ b/v1.74/development/dependencies.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -390,5 +403,7 @@ letting Poetry do the right thing.</p>
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/development/experimental_features.html b/v1.74/development/experimental_features.html
index 4293989190..adea14a2c6 100644
--- a/v1.74/development/experimental_features.html
+++ b/v1.74/development/experimental_features.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -218,5 +231,7 @@ configuration key (see the <code>synapse.config.experimental</code> file) and ei
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/development/git.html b/v1.74/development/git.html
index 1a2a3ed0ed..65d6db27c6 100644
--- a/v1.74/development/git.html
+++ b/v1.74/development/git.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -306,5 +319,7 @@ the history of Synapse), we've had two releases in flight at once. Obviously,
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/development/internal_documentation/index.html b/v1.74/development/internal_documentation/index.html
index 14b78ce1ce..b7d8bc0300 100644
--- a/v1.74/development/internal_documentation/index.html
+++ b/v1.74/development/internal_documentation/index.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -194,5 +207,7 @@ under the Usage section of the documentation.</p>
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/development/releases.html b/v1.74/development/releases.html
index 8e73776887..f724872847 100644
--- a/v1.74/development/releases.html
+++ b/v1.74/development/releases.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -215,5 +228,7 @@ found in the <a href="https://matrix.org/blog/category/security">security catego
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/development/reviews.html b/v1.74/development/reviews.html
index 661d0cd7d3..c9fb2432f7 100644
--- a/v1.74/development/reviews.html
+++ b/v1.74/development/reviews.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -218,5 +231,7 @@ with the rationale on why you're putting it back in the queue.</p>
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/development/room-dag-concepts.html b/v1.74/development/room-dag-concepts.html
index 687941d5d2..7f2472b457 100644
--- a/v1.74/development/room-dag-concepts.html
+++ b/v1.74/development/room-dag-concepts.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -274,5 +287,7 @@ notes from @Azrenbeth, https://pastebin.com/seUGVGeT</p>
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/development/saml.html b/v1.74/development/saml.html
index e21d487d0a..22082f1ea0 100644
--- a/v1.74/development/saml.html
+++ b/v1.74/development/saml.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -223,5 +236,7 @@ samling page and clear the site data. In Chrome, this will be a button on the Ap
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/development/synapse_architecture/cancellation.html b/v1.74/development/synapse_architecture/cancellation.html
index 43ad7d2b41..4000ef1cb6 100644
--- a/v1.74/development/synapse_architecture/cancellation.html
+++ b/v1.74/development/synapse_architecture/cancellation.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -532,5 +545,7 @@ with LoggingContext(&quot;request-1&quot;):
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/docs/website_files/version-picker.css b/v1.74/docs/website_files/version-picker.css
new file mode 100644
index 0000000000..28e5d5219a
--- /dev/null
+++ b/v1.74/docs/website_files/version-picker.css
@@ -0,0 +1,78 @@
+.version-picker {
+    display: flex;
+    align-items: center;
+}
+
+.version-picker .dropdown {
+    width: 130px;
+    max-height: 29px;
+    margin-left: 10px;
+    display: inline-block;
+    border-radius: 4px;
+    border: 1px solid var(--theme-popup-border);
+    position: relative;
+    font-size: 13px;
+    color: var(--fg);
+    height: 100%;
+    text-align: left;
+}
+.version-picker .dropdown .select {
+    cursor: pointer;
+    display: block;
+    padding: 5px 2px 5px 15px;
+}
+.version-picker .dropdown .select > i {
+    font-size: 10px;
+    color: var(--fg);
+    cursor: pointer;
+    float: right;
+    line-height: 20px !important;
+}
+.version-picker .dropdown:hover {
+    border: 1px solid var(--theme-popup-border);
+}
+.version-picker .dropdown:active {
+    background-color: var(--theme-popup-bg);
+}
+.version-picker .dropdown.active:hover,
+.version-picker .dropdown.active {
+    border: 1px solid var(--theme-popup-border);
+    border-radius: 2px 2px 0 0;
+    background-color: var(--theme-popup-bg);
+}
+.version-picker .dropdown.active .select > i {
+    transform: rotate(-180deg);
+}
+.version-picker .dropdown .dropdown-menu {
+    position: absolute;
+    background-color: var(--theme-popup-bg);
+    width: 100%;
+    left: -1px;
+    right: 1px;
+    margin-top: 1px;
+    border: 1px solid var(--theme-popup-border);
+    border-radius: 0 0 4px 4px;
+    overflow: hidden;
+    display: none;
+    max-height: 300px;
+    overflow-y: auto;
+    z-index: 9;
+}
+.version-picker .dropdown .dropdown-menu li {
+    font-size: 12px;
+    padding: 6px 20px;
+    cursor: pointer;
+} 
+.version-picker .dropdown .dropdown-menu {
+    padding: 0;
+    list-style: none;
+}
+.version-picker .dropdown .dropdown-menu li:hover {
+    background-color: var(--theme-hover);
+}
+.version-picker .dropdown .dropdown-menu li.active::before {
+    display: inline-block;
+    content: "✓";
+    margin-inline-start: -14px;
+    width: 14px;
+}
\ No newline at end of file
diff --git a/v1.74/docs/website_files/version-picker.js b/v1.74/docs/website_files/version-picker.js
new file mode 100644
index 0000000000..bb35a7d896
--- /dev/null
+++ b/v1.74/docs/website_files/version-picker.js
@@ -0,0 +1,127 @@
+
+const dropdown = document.querySelector('.version-picker .dropdown');
+const dropdownMenu = dropdown.querySelector('.dropdown-menu');
+
+fetchVersions(dropdown, dropdownMenu).then(() => {
+    initializeVersionDropdown(dropdown, dropdownMenu);
+});
+
+/**
+ * Initialize the dropdown functionality for version selection.
+ * 
+ * @param {Element} dropdown - The dropdown element.
+ * @param {Element} dropdownMenu - The dropdown menu element.
+ */
+function initializeVersionDropdown(dropdown, dropdownMenu) {
+    // Toggle the dropdown menu on click
+    dropdown.addEventListener('click', function () {
+        this.setAttribute('tabindex', 1);
+        this.classList.toggle('active');
+        dropdownMenu.style.display = (dropdownMenu.style.display === 'block') ? 'none' : 'block';
+    });
+  
+    // Remove the 'active' class and hide the dropdown menu on focusout
+    dropdown.addEventListener('focusout', function () {
+        this.classList.remove('active');
+        dropdownMenu.style.display = 'none';
+    });
+  
+    // Handle item selection within the dropdown menu
+    const dropdownMenuItems = dropdownMenu.querySelectorAll('li');    
+    dropdownMenuItems.forEach(function (item) {
+        item.addEventListener('click', function () {
+            dropdownMenuItems.forEach(function (item) {
+                item.classList.remove('active');
+            });
+            this.classList.add('active');
+            dropdown.querySelector('span').textContent = this.textContent;
+            dropdown.querySelector('input').value = this.getAttribute('id');
+
+            window.location.href = changeVersion(window.location.href, this.textContent);
+        });
+    });
+};
+
+/**
+ * This function fetches the available versions from a GitHub repository
+ * and inserts them into the version picker.
+ * 
+ * @param {Element} dropdown - The dropdown element.
+ * @param {Element} dropdownMenu - The dropdown menu element.
+ * @returns {Promise<Array<string>>} A promise that resolves with an array of available versions.
+ */
+function fetchVersions(dropdown, dropdownMenu) {
+    return new Promise((resolve, reject) => {
+        window.addEventListener("load", () => {
+
+            fetch("https://api.github.com/repos/matrix-org/synapse/git/trees/gh-pages", {
+                cache: "force-cache",
+            }).then(res => 
+                res.json()
+            ).then(resObject => {
+                const excluded = ['dev-docs', 'v1.91.0', 'v1.80.0', 'v1.69.0'];
+                const tree = resObject.tree.filter(item => item.type === "tree" && !excluded.includes(item.path));
+                const versions = tree.map(item => item.path).sort(sortVersions);
+
+                // Create a list of <li> items for versions
+                versions.forEach((version) => {
+                    const li = document.createElement("li");
+                    li.textContent = version;
+                    li.id = version;
+    
+                    if (window.SYNAPSE_VERSION === version) {
+                        li.classList.add('active');
+                        dropdown.querySelector('span').textContent = version;
+                        dropdown.querySelector('input').value = version;
+                    }
+    
+                    dropdownMenu.appendChild(li);
+                });
+
+                resolve(versions);
+
+            }).catch(ex => {
+                console.error("Failed to fetch version data", ex);
+                reject(ex);
+            })
+        });
+    });
+}
+
+/**
+ * Custom sorting function to sort an array of version strings.
+ *
+ * @param {string} a - The first version string to compare.
+ * @param {string} b - The second version string to compare.
+ * @returns {number} - A negative number if a should come before b, a positive number if b should come before a, or 0 if they are equal.
+ */
+function sortVersions(a, b) {
+    // Put 'develop' and 'latest' at the top
+    if (a === 'develop' || a === 'latest') return -1;
+    if (b === 'develop' || b === 'latest') return 1;
+
+    const versionA = (a.match(/v\d+(\.\d+)+/) || [])[0];
+    const versionB = (b.match(/v\d+(\.\d+)+/) || [])[0];
+
+    return versionB.localeCompare(versionA);
+}
+
+/**
+ * Change the version in a URL path.
+ *
+ * @param {string} url - The original URL to be modified.
+ * @param {string} newVersion - The new version to replace the existing version in the URL.
+ * @returns {string} The updated URL with the new version.
+ */
+function changeVersion(url, newVersion) {
+    const parsedURL = new URL(url);
+    const pathSegments = parsedURL.pathname.split('/');
+  
+    // Modify the version
+    pathSegments[2] = newVersion;
+
+    // Reconstruct the URL
+    parsedURL.pathname = pathSegments.join('/');
+  
+    return parsedURL.href;
+}
\ No newline at end of file
diff --git a/v1.74/docs/website_files/version.js b/v1.74/docs/website_files/version.js
new file mode 100644
index 0000000000..07161534fc
--- /dev/null
+++ b/v1.74/docs/website_files/version.js
@@ -0,0 +1 @@
+window.SYNAPSE_VERSION = 'v1.74';
diff --git a/v1.74/federate.html b/v1.74/federate.html
index cf1af3a0ce..a71cca1dcd 100644
--- a/v1.74/federate.html
+++ b/v1.74/federate.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -238,5 +251,7 @@ useful just for development purposes. See
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/index.html b/v1.74/index.html
index e240352bac..d5a7c1b735 100644
--- a/v1.74/index.html
+++ b/v1.74/index.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -264,5 +277,7 @@ Policy</a>. Thank you!</p>
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/jwt.html b/v1.74/jwt.html
index fe60824bc5..64c5a4a8a3 100644
--- a/v1.74/jwt.html
+++ b/v1.74/jwt.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -281,5 +294,7 @@ print(result.decode(&quot;ascii&quot;))
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/log_contexts.html b/v1.74/log_contexts.html
index 4cea47c12f..9fd6bd59db 100644
--- a/v1.74/log_contexts.html
+++ b/v1.74/log_contexts.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -481,5 +494,7 @@ lead to leaked logcontexts which are incredibly hard to track down.</p>
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/manhole.html b/v1.74/manhole.html
index e826691f01..7025fbf125 100644
--- a/v1.74/manhole.html
+++ b/v1.74/manhole.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -254,5 +267,7 @@ parts of the process.</p>
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/media_repository.html b/v1.74/media_repository.html
index d7a86ba6e9..04ad6f76b7 100644
--- a/v1.74/media_repository.html
+++ b/v1.74/media_repository.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -245,5 +258,7 @@ url_cache_thumbnails/yyyy-mm-dd/aaaaaaaaaaaaaaaa/128-96-image-jpeg-scale
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/message_retention_policies.html b/v1.74/message_retention_policies.html
index 214e862ab4..50856dd0c7 100644
--- a/v1.74/message_retention_policies.html
+++ b/v1.74/message_retention_policies.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -342,5 +355,7 @@ operating system, the server admin needs to run <code>VACUUM FULL;</code> (or
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/metrics-howto.html b/v1.74/metrics-howto.html
index 46cf8a2bd9..4209b16805 100644
--- a/v1.74/metrics-howto.html
+++ b/v1.74/metrics-howto.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -458,5 +471,7 @@ renamed.</p>
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/modules/account_data_callbacks.html b/v1.74/modules/account_data_callbacks.html
index 1a7d4497f5..9a69599e99 100644
--- a/v1.74/modules/account_data_callbacks.html
+++ b/v1.74/modules/account_data_callbacks.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -276,5 +289,7 @@ class CustomAccountDataModule:
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/modules/account_validity_callbacks.html b/v1.74/modules/account_validity_callbacks.html
index 1c8deed4b6..9da13217ee 100644
--- a/v1.74/modules/account_validity_callbacks.html
+++ b/v1.74/modules/account_validity_callbacks.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -214,5 +227,7 @@ represented by their Matrix user ID.</p>
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/modules/background_update_controller_callbacks.html b/v1.74/modules/background_update_controller_callbacks.html
index 9a007d1287..f0ec1cda40 100644
--- a/v1.74/modules/background_update_controller_callbacks.html
+++ b/v1.74/modules/background_update_controller_callbacks.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -232,5 +245,7 @@ ensure that progress is always made.</p>
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/modules/index.html b/v1.74/modules/index.html
index 391bc33f73..db08f8469e 100644
--- a/v1.74/modules/index.html
+++ b/v1.74/modules/index.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -227,5 +240,7 @@ another part of Synapse's configuration file.</p>
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/modules/password_auth_provider_callbacks.html b/v1.74/modules/password_auth_provider_callbacks.html
index b87f318ff7..9dab3e8035 100644
--- a/v1.74/modules/password_auth_provider_callbacks.html
+++ b/v1.74/modules/password_auth_provider_callbacks.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -420,5 +433,7 @@ class MyAuthProvider:
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/modules/porting_legacy_module.html b/v1.74/modules/porting_legacy_module.html
index 4765b94e84..64524ee5ff 100644
--- a/v1.74/modules/porting_legacy_module.html
+++ b/v1.74/modules/porting_legacy_module.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -202,5 +215,7 @@ for more info).</p>
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/modules/presence_router_callbacks.html b/v1.74/modules/presence_router_callbacks.html
index 5b4e40a0db..1cd5f70043 100644
--- a/v1.74/modules/presence_router_callbacks.html
+++ b/v1.74/modules/presence_router_callbacks.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -267,5 +280,7 @@ class CustomPresenceRouter:
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/modules/spam_checker_callbacks.html b/v1.74/modules/spam_checker_callbacks.html
index fde6e6fb76..78dab1dfcd 100644
--- a/v1.74/modules/spam_checker_callbacks.html
+++ b/v1.74/modules/spam_checker_callbacks.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -537,5 +550,7 @@ class ListSpamChecker:
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/modules/third_party_rules_callbacks.html b/v1.74/modules/third_party_rules_callbacks.html
index b8f0a9fcda..0ed99f66e9 100644
--- a/v1.74/modules/third_party_rules_callbacks.html
+++ b/v1.74/modules/third_party_rules_callbacks.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -405,5 +418,7 @@ class EventCensorer:
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/modules/writing_a_module.html b/v1.74/modules/writing_a_module.html
index 5922ee854b..a0cbb7692f 100644
--- a/v1.74/modules/writing_a_module.html
+++ b/v1.74/modules/writing_a_module.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -246,5 +259,7 @@ the callback name as the argument name and the function as its value. A
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/openid.html b/v1.74/openid.html
index 2d1a1f2865..4cef9f3817 100644
--- a/v1.74/openid.html
+++ b/v1.74/openid.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -746,5 +759,7 @@ needed to add OAuth2 capabilities to your Django projects. It supports
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/opentracing.html b/v1.74/opentracing.html
index 40c589cae0..067f56d74f 100644
--- a/v1.74/opentracing.html
+++ b/v1.74/opentracing.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -259,5 +272,7 @@ logged to OpenTracing's logs.</li>
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/other/running_synapse_on_single_board_computers.html b/v1.74/other/running_synapse_on_single_board_computers.html
index 05247caa4e..c4b458aeca 100644
--- a/v1.74/other/running_synapse_on_single_board_computers.html
+++ b/v1.74/other/running_synapse_on_single_board_computers.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -235,5 +248,7 @@ admin@homeserver:~$ sudo --user postgres psql matrix-synapse --command 'select c
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/password_auth_providers.html b/v1.74/password_auth_providers.html
index 57f2b60371..dd31fc5e20 100644
--- a/v1.74/password_auth_providers.html
+++ b/v1.74/password_auth_providers.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -299,5 +312,7 @@ wait for the <code>Awaitable</code> to complete, but the result is ignored.</p>
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/postgres.html b/v1.74/postgres.html
index b092a47ea1..6573db3111 100644
--- a/v1.74/postgres.html
+++ b/v1.74/postgres.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -394,5 +407,7 @@ successfully.</p>
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/print.html b/v1.74/print.html
index ca1f26f755..9cc5f2c6c7 100644
--- a/v1.74/print.html
+++ b/v1.74/print.html
@@ -29,6 +29,7 @@
         <link rel="stylesheet" href="docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -104,6 +105,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -17677,10 +17690,12 @@ admin@homeserver:~$ sudo --user postgres psql matrix-synapse --command 'select c
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="docs/website_files/version.js"></script>
         <script type="text/javascript">
         window.addEventListener('load', function() {
             window.setTimeout(window.print, 100);
         });
         </script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/replication.html b/v1.74/replication.html
index 8d40bbe4e3..b9aff79328 100644
--- a/v1.74/replication.html
+++ b/v1.74/replication.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -217,5 +230,7 @@ the classes interact, can be found in
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/reverse_proxy.html b/v1.74/reverse_proxy.html
index 67783637b9..df2f4ede56 100644
--- a/v1.74/reverse_proxy.html
+++ b/v1.74/reverse_proxy.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -407,5 +420,7 @@ we do not recommend exposing them to the public internet without good reason.</p
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/room_and_user_statistics.html b/v1.74/room_and_user_statistics.html
index 370bb14ef8..3f6a183126 100644
--- a/v1.74/room_and_user_statistics.html
+++ b/v1.74/room_and_user_statistics.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -200,5 +213,7 @@ statistics for a room. Each subject can only have one entry.</p>
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/server_notices.html b/v1.74/server_notices.html
index 98168b7897..ce22729a09 100644
--- a/v1.74/server_notices.html
+++ b/v1.74/server_notices.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -229,5 +242,7 @@ displayname and avatar of the Server Notices user.</p>
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/setup/forward_proxy.html b/v1.74/setup/forward_proxy.html
index 0405b2984b..f448bf5cc0 100644
--- a/v1.74/setup/forward_proxy.html
+++ b/v1.74/setup/forward_proxy.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -260,5 +273,7 @@ your <a href="../usage/configuration/homeserver_sample_config.html">homserver.ya
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/setup/installation.html b/v1.74/setup/installation.html
index bca8bf6e8d..d5ce254bd1 100644
--- a/v1.74/setup/installation.html
+++ b/v1.74/setup/installation.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -610,5 +623,7 @@ failing, e.g.:</p>
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/setup/turn/coturn.html b/v1.74/setup/turn/coturn.html
index 1b9753d202..0db9d9c4f9 100644
--- a/v1.74/setup/turn/coturn.html
+++ b/v1.74/setup/turn/coturn.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -347,5 +360,7 @@ IPv6 address that is mapped by NAT to the external IPv6 address.</p>
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/setup/turn/eturnal.html b/v1.74/setup/turn/eturnal.html
index 75988b55f0..5cf538f4a7 100644
--- a/v1.74/setup/turn/eturnal.html
+++ b/v1.74/setup/turn/eturnal.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -320,5 +333,7 @@ to query how many active sessions exist, to change logging behaviour and so on.<
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/sso_mapping_providers.html b/v1.74/sso_mapping_providers.html
index 53709311b0..afb97b011b 100644
--- a/v1.74/sso_mapping_providers.html
+++ b/v1.74/sso_mapping_providers.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -442,5 +455,7 @@ specified in the config. It is located at
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/structured_logging.html b/v1.74/structured_logging.html
index fd2d9cde63..08d5f1742e 100644
--- a/v1.74/structured_logging.html
+++ b/v1.74/structured_logging.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -254,5 +267,7 @@ remote endpoint at 10.1.2.3:9999.</p>
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/synctl_workers.html b/v1.74/synctl_workers.html
index ea621343e3..5bc34512d5 100644
--- a/v1.74/synctl_workers.html
+++ b/v1.74/synctl_workers.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -208,5 +221,7 @@ notifications.</p>
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/systemd-with-workers/index.html b/v1.74/systemd-with-workers/index.html
index 292c6e7af9..1806731af1 100644
--- a/v1.74/systemd-with-workers/index.html
+++ b/v1.74/systemd-with-workers/index.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -280,5 +293,7 @@ the changes being applied at a glance.</p>
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/tcp_replication.html b/v1.74/tcp_replication.html
index 0e58cb23bb..1ce190b839 100644
--- a/v1.74/tcp_replication.html
+++ b/v1.74/tcp_replication.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -380,5 +393,7 @@ state</li>
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/templates.html b/v1.74/templates.html
index c2e355779c..319c0df7b1 100644
--- a/v1.74/templates.html
+++ b/v1.74/templates.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -467,5 +480,7 @@ When rendering, this template is given two variables:
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/turn-howto.html b/v1.74/turn-howto.html
index 02dc767766..f63ceffd0e 100644
--- a/v1.74/turn-howto.html
+++ b/v1.74/turn-howto.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -342,5 +355,7 @@ entry in the results.</p>
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/upgrade.html b/v1.74/upgrade.html
index 94da3b1497..58bee6d291 100644
--- a/v1.74/upgrade.html
+++ b/v1.74/upgrade.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -1926,5 +1939,7 @@ in the local HS will automatically rejoin the room.</p>
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/usage/administration/admin_api/background_updates.html b/v1.74/usage/administration/admin_api/background_updates.html
index c3ee1aea1c..e391ef77de 100644
--- a/v1.74/usage/administration/admin_api/background_updates.html
+++ b/v1.74/usage/administration/admin_api/background_updates.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../../../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../../../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../../../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../../../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -255,5 +268,7 @@ background updates which won't be cancelled once started.</p>
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../../../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../../../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../../../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/usage/administration/admin_api/federation.html b/v1.74/usage/administration/admin_api/federation.html
index d9af4a958d..e71b2796fb 100644
--- a/v1.74/usage/administration/admin_api/federation.html
+++ b/v1.74/usage/administration/admin_api/federation.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../../../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../../../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../../../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../../../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -357,5 +370,7 @@ even if the API already returns the http status 200.</p>
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../../../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../../../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../../../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/usage/administration/admin_api/index.html b/v1.74/usage/administration/admin_api/index.html
index 0d5587271d..def6bc8b59 100644
--- a/v1.74/usage/administration/admin_api/index.html
+++ b/v1.74/usage/administration/admin_api/index.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../../../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../../../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../../../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../../../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -217,5 +230,7 @@ information from the Admin API.</p>
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../../../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../../../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../../../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/usage/administration/admin_api/registration_tokens.html b/v1.74/usage/administration/admin_api/registration_tokens.html
index 30877efb34..1cf165a0ca 100644
--- a/v1.74/usage/administration/admin_api/registration_tokens.html
+++ b/v1.74/usage/administration/admin_api/registration_tokens.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../../../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../../../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../../../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../../../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -423,5 +436,7 @@ the <a href="https://matrix.org/docs/spec/client_server/r0.6.1#api-standards">Ma
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../../../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../../../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../../../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/usage/administration/admin_faq.html b/v1.74/usage/administration/admin_faq.html
index f9825d21d1..b6d5689c86 100644
--- a/v1.74/usage/administration/admin_faq.html
+++ b/v1.74/usage/administration/admin_faq.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -308,5 +321,7 @@ you see this failure mode so we can help debug it, however.</p>
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/usage/administration/database_maintenance_tools.html b/v1.74/usage/administration/database_maintenance_tools.html
index 1636d7239d..83e1e716cf 100644
--- a/v1.74/usage/administration/database_maintenance_tools.html
+++ b/v1.74/usage/administration/database_maintenance_tools.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -197,5 +210,7 @@
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/usage/administration/index.html b/v1.74/usage/administration/index.html
index b5226c18ad..819bbe53d7 100644
--- a/v1.74/usage/administration/index.html
+++ b/v1.74/usage/administration/index.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -192,5 +205,7 @@
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/usage/administration/monitoring/reporting_homeserver_usage_statistics.html b/v1.74/usage/administration/monitoring/reporting_homeserver_usage_statistics.html
index 9321a512ba..c6ef2f7d09 100644
--- a/v1.74/usage/administration/monitoring/reporting_homeserver_usage_statistics.html
+++ b/v1.74/usage/administration/monitoring/reporting_homeserver_usage_statistics.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../../../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../../../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../../../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../../../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -259,5 +272,7 @@ consider using one of the following known implementations:</p>
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../../../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../../../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../../../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/usage/administration/monthly_active_users.html b/v1.74/usage/administration/monthly_active_users.html
index 0b9b992bef..9b8c507859 100644
--- a/v1.74/usage/administration/monthly_active_users.html
+++ b/v1.74/usage/administration/monthly_active_users.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -249,5 +262,7 @@ registered accounts on the homeserver.</p>
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/usage/administration/request_log.html b/v1.74/usage/administration/request_log.html
index e5b7100be4..75e29bb8c3 100644
--- a/v1.74/usage/administration/request_log.html
+++ b/v1.74/usage/administration/request_log.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -220,5 +233,7 @@ small processing times.</p>
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/usage/administration/state_groups.html b/v1.74/usage/administration/state_groups.html
index 03bc079719..72f0397377 100644
--- a/v1.74/usage/administration/state_groups.html
+++ b/v1.74/usage/administration/state_groups.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -198,5 +211,7 @@
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/usage/administration/understanding_synapse_through_grafana_graphs.html b/v1.74/usage/administration/understanding_synapse_through_grafana_graphs.html
index 715e258c92..114678b657 100644
--- a/v1.74/usage/administration/understanding_synapse_through_grafana_graphs.html
+++ b/v1.74/usage/administration/understanding_synapse_through_grafana_graphs.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -235,5 +248,7 @@ to make use of multiple CPU cores / multiple machines for your homeserver.</p>
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/usage/administration/useful_sql_for_admins.html b/v1.74/usage/administration/useful_sql_for_admins.html
index 4565af12cd..50780244a5 100644
--- a/v1.74/usage/administration/useful_sql_for_admins.html
+++ b/v1.74/usage/administration/useful_sql_for_admins.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -355,5 +368,7 @@ WHERE room_stats_state.room_id = event_json.room_id&quot; | psql -d synapse -h l
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/usage/configuration/config_documentation.html b/v1.74/usage/configuration/config_documentation.html
index ab15c6704b..fe31474a18 100644
--- a/v1.74/usage/configuration/config_documentation.html
+++ b/v1.74/usage/configuration/config_documentation.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -3616,5 +3629,7 @@ Set a size to change the default.</li>
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/usage/configuration/homeserver_sample_config.html b/v1.74/usage/configuration/homeserver_sample_config.html
index e48a4d48aa..655799cc93 100644
--- a/v1.74/usage/configuration/homeserver_sample_config.html
+++ b/v1.74/usage/configuration/homeserver_sample_config.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -239,5 +252,7 @@ trusted_key_servers:
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/usage/configuration/index.html b/v1.74/usage/configuration/index.html
index 52e8264c9d..5365a4a5f8 100644
--- a/v1.74/usage/configuration/index.html
+++ b/v1.74/usage/configuration/index.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -188,5 +201,7 @@ file should have been generated when you <a href="../../setup/installation.html"
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/usage/configuration/logging_sample_config.html b/v1.74/usage/configuration/logging_sample_config.html
index c5272f82bc..12a91fb446 100644
--- a/v1.74/usage/configuration/logging_sample_config.html
+++ b/v1.74/usage/configuration/logging_sample_config.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -271,5 +284,7 @@ disable_existing_loggers: false
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/usage/configuration/user_authentication/index.html b/v1.74/usage/configuration/user_authentication/index.html
index b3de5df11a..025ef0245d 100644
--- a/v1.74/usage/configuration/user_authentication/index.html
+++ b/v1.74/usage/configuration/user_authentication/index.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../../../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../../../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../../../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../../../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -198,5 +211,7 @@ modules.</p>
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../../../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../../../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../../../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/usage/configuration/user_authentication/refresh_tokens.html b/v1.74/usage/configuration/user_authentication/refresh_tokens.html
index fc7b2c7483..e4161ef893 100644
--- a/v1.74/usage/configuration/user_authentication/refresh_tokens.html
+++ b/v1.74/usage/configuration/user_authentication/refresh_tokens.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../../../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../../../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../../../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../../../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -307,5 +320,7 @@ above requirements will still hold.</em></p>
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../../../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../../../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../../../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/usage/configuration/user_authentication/single_sign_on/cas.html b/v1.74/usage/configuration/user_authentication/single_sign_on/cas.html
index 2c1ebbba62..451f30d2d9 100644
--- a/v1.74/usage/configuration/user_authentication/single_sign_on/cas.html
+++ b/v1.74/usage/configuration/user_authentication/single_sign_on/cas.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../../../../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../../../../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../../../../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../../../../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -191,5 +204,7 @@ sections of the configuration manual for more details.</p>
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../../../../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../../../../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../../../../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/usage/configuration/user_authentication/single_sign_on/index.html b/v1.74/usage/configuration/user_authentication/single_sign_on/index.html
index df7ef55bc4..9560d7a379 100644
--- a/v1.74/usage/configuration/user_authentication/single_sign_on/index.html
+++ b/v1.74/usage/configuration/user_authentication/single_sign_on/index.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../../../../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../../../../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../../../../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../../../../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -189,5 +202,7 @@ auth provider modules.</p>
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../../../../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../../../../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../../../../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/usage/configuration/user_authentication/single_sign_on/saml.html b/v1.74/usage/configuration/user_authentication/single_sign_on/saml.html
index 04b85e31ef..fd8cbdb88b 100644
--- a/v1.74/usage/configuration/user_authentication/single_sign_on/saml.html
+++ b/v1.74/usage/configuration/user_authentication/single_sign_on/saml.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="../../../../docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="../../../../docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="../../../../docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="../../../../docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -191,5 +204,7 @@ file</a> for more details.</p>
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="../../../../docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="../../../../docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="../../../../docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/user_directory.html b/v1.74/user_directory.html
index 303532e2fb..674b4c0282 100644
--- a/v1.74/user_directory.html
+++ b/v1.74/user_directory.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -240,5 +253,7 @@ different, but this isn't enforced by a constraint.</p>
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/website_files/theme/index.hbs b/v1.74/website_files/theme/index.hbs
index 3b7a5b6163..b169323a43 100644
--- a/v1.74/website_files/theme/index.hbs
+++ b/v1.74/website_files/theme/index.hbs
@@ -131,6 +131,18 @@
                             <i class="fa fa-search"></i>
                         </button>
                         {{/if}}
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">{{ book_title }}</h1>
@@ -309,4 +321,4 @@
         {{/if}}
 
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/website_files/version-picker.css b/v1.74/website_files/version-picker.css
new file mode 100644
index 0000000000..28e5d5219a
--- /dev/null
+++ b/v1.74/website_files/version-picker.css
@@ -0,0 +1,78 @@
+.version-picker {
+    display: flex;
+    align-items: center;
+}
+
+.version-picker .dropdown {
+    width: 130px;
+    max-height: 29px;
+    margin-left: 10px;
+    display: inline-block;
+    border-radius: 4px;
+    border: 1px solid var(--theme-popup-border);
+    position: relative;
+    font-size: 13px;
+    color: var(--fg);
+    height: 100%;
+    text-align: left;
+}
+.version-picker .dropdown .select {
+    cursor: pointer;
+    display: block;
+    padding: 5px 2px 5px 15px;
+}
+.version-picker .dropdown .select > i {
+    font-size: 10px;
+    color: var(--fg);
+    cursor: pointer;
+    float: right;
+    line-height: 20px !important;
+}
+.version-picker .dropdown:hover {
+    border: 1px solid var(--theme-popup-border);
+}
+.version-picker .dropdown:active {
+    background-color: var(--theme-popup-bg);
+}
+.version-picker .dropdown.active:hover,
+.version-picker .dropdown.active {
+    border: 1px solid var(--theme-popup-border);
+    border-radius: 2px 2px 0 0;
+    background-color: var(--theme-popup-bg);
+}
+.version-picker .dropdown.active .select > i {
+    transform: rotate(-180deg);
+}
+.version-picker .dropdown .dropdown-menu {
+    position: absolute;
+    background-color: var(--theme-popup-bg);
+    width: 100%;
+    left: -1px;
+    right: 1px;
+    margin-top: 1px;
+    border: 1px solid var(--theme-popup-border);
+    border-radius: 0 0 4px 4px;
+    overflow: hidden;
+    display: none;
+    max-height: 300px;
+    overflow-y: auto;
+    z-index: 9;
+}
+.version-picker .dropdown .dropdown-menu li {
+    font-size: 12px;
+    padding: 6px 20px;
+    cursor: pointer;
+} 
+.version-picker .dropdown .dropdown-menu {
+    padding: 0;
+    list-style: none;
+}
+.version-picker .dropdown .dropdown-menu li:hover {
+    background-color: var(--theme-hover);
+}
+.version-picker .dropdown .dropdown-menu li.active::before {
+    display: inline-block;
+    content: "✓";
+    margin-inline-start: -14px;
+    width: 14px;
+}
\ No newline at end of file
diff --git a/v1.74/website_files/version-picker.js b/v1.74/website_files/version-picker.js
new file mode 100644
index 0000000000..bb35a7d896
--- /dev/null
+++ b/v1.74/website_files/version-picker.js
@@ -0,0 +1,127 @@
+
+const dropdown = document.querySelector('.version-picker .dropdown');
+const dropdownMenu = dropdown.querySelector('.dropdown-menu');
+
+fetchVersions(dropdown, dropdownMenu).then(() => {
+    initializeVersionDropdown(dropdown, dropdownMenu);
+});
+
+/**
+ * Initialize the dropdown functionality for version selection.
+ * 
+ * @param {Element} dropdown - The dropdown element.
+ * @param {Element} dropdownMenu - The dropdown menu element.
+ */
+function initializeVersionDropdown(dropdown, dropdownMenu) {
+    // Toggle the dropdown menu on click
+    dropdown.addEventListener('click', function () {
+        this.setAttribute('tabindex', 1);
+        this.classList.toggle('active');
+        dropdownMenu.style.display = (dropdownMenu.style.display === 'block') ? 'none' : 'block';
+    });
+  
+    // Remove the 'active' class and hide the dropdown menu on focusout
+    dropdown.addEventListener('focusout', function () {
+        this.classList.remove('active');
+        dropdownMenu.style.display = 'none';
+    });
+  
+    // Handle item selection within the dropdown menu
+    const dropdownMenuItems = dropdownMenu.querySelectorAll('li');    
+    dropdownMenuItems.forEach(function (item) {
+        item.addEventListener('click', function () {
+            dropdownMenuItems.forEach(function (item) {
+                item.classList.remove('active');
+            });
+            this.classList.add('active');
+            dropdown.querySelector('span').textContent = this.textContent;
+            dropdown.querySelector('input').value = this.getAttribute('id');
+
+            window.location.href = changeVersion(window.location.href, this.textContent);
+        });
+    });
+};
+
+/**
+ * This function fetches the available versions from a GitHub repository
+ * and inserts them into the version picker.
+ * 
+ * @param {Element} dropdown - The dropdown element.
+ * @param {Element} dropdownMenu - The dropdown menu element.
+ * @returns {Promise<Array<string>>} A promise that resolves with an array of available versions.
+ */
+function fetchVersions(dropdown, dropdownMenu) {
+    return new Promise((resolve, reject) => {
+        window.addEventListener("load", () => {
+
+            fetch("https://api.github.com/repos/matrix-org/synapse/git/trees/gh-pages", {
+                cache: "force-cache",
+            }).then(res => 
+                res.json()
+            ).then(resObject => {
+                const excluded = ['dev-docs', 'v1.91.0', 'v1.80.0', 'v1.69.0'];
+                const tree = resObject.tree.filter(item => item.type === "tree" && !excluded.includes(item.path));
+                const versions = tree.map(item => item.path).sort(sortVersions);
+
+                // Create a list of <li> items for versions
+                versions.forEach((version) => {
+                    const li = document.createElement("li");
+                    li.textContent = version;
+                    li.id = version;
+    
+                    if (window.SYNAPSE_VERSION === version) {
+                        li.classList.add('active');
+                        dropdown.querySelector('span').textContent = version;
+                        dropdown.querySelector('input').value = version;
+                    }
+    
+                    dropdownMenu.appendChild(li);
+                });
+
+                resolve(versions);
+
+            }).catch(ex => {
+                console.error("Failed to fetch version data", ex);
+                reject(ex);
+            })
+        });
+    });
+}
+
+/**
+ * Custom sorting function to sort an array of version strings.
+ *
+ * @param {string} a - The first version string to compare.
+ * @param {string} b - The second version string to compare.
+ * @returns {number} - A negative number if a should come before b, a positive number if b should come before a, or 0 if they are equal.
+ */
+function sortVersions(a, b) {
+    // Put 'develop' and 'latest' at the top
+    if (a === 'develop' || a === 'latest') return -1;
+    if (b === 'develop' || b === 'latest') return 1;
+
+    const versionA = (a.match(/v\d+(\.\d+)+/) || [])[0];
+    const versionB = (b.match(/v\d+(\.\d+)+/) || [])[0];
+
+    return versionB.localeCompare(versionA);
+}
+
+/**
+ * Change the version in a URL path.
+ *
+ * @param {string} url - The original URL to be modified.
+ * @param {string} newVersion - The new version to replace the existing version in the URL.
+ * @returns {string} The updated URL with the new version.
+ */
+function changeVersion(url, newVersion) {
+    const parsedURL = new URL(url);
+    const pathSegments = parsedURL.pathname.split('/');
+  
+    // Modify the version
+    pathSegments[2] = newVersion;
+
+    // Reconstruct the URL
+    parsedURL.pathname = pathSegments.join('/');
+  
+    return parsedURL.href;
+}
\ No newline at end of file
diff --git a/v1.74/website_files/version.js b/v1.74/website_files/version.js
new file mode 100644
index 0000000000..07161534fc
--- /dev/null
+++ b/v1.74/website_files/version.js
@@ -0,0 +1 @@
+window.SYNAPSE_VERSION = 'v1.74';
diff --git a/v1.74/welcome_and_overview.html b/v1.74/welcome_and_overview.html
index e240352bac..d5a7c1b735 100644
--- a/v1.74/welcome_and_overview.html
+++ b/v1.74/welcome_and_overview.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -264,5 +277,7 @@ Policy</a>. Thank you!</p>
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/v1.74/workers.html b/v1.74/workers.html
index 53a9574015..d967d98438 100644
--- a/v1.74/workers.html
+++ b/v1.74/workers.html
@@ -28,6 +28,7 @@
         <link rel="stylesheet" href="docs/website_files/table-of-contents.css">
         <link rel="stylesheet" href="docs/website_files/remove-nav-buttons.css">
         <link rel="stylesheet" href="docs/website_files/indent-section-headers.css">
+        <link rel="stylesheet" href="docs/website_files/version-picker.css">
     </head>
     <body>
         <!-- Provide site root to javascript -->
@@ -103,6 +104,18 @@
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                             <i class="fa fa-search"></i>
                         </button>
+                        <div class="version-picker">
+                            <div class="dropdown">
+                                <div class="select">
+                                    <span></span>
+                                    <i class="fa fa-chevron-down"></i>
+                                </div>
+                                <input type="hidden" name="version">
+                                <ul class="dropdown-menu">
+                                    <!-- Versions will be added dynamically in version-picker.js -->
+                                </ul>
+                            </div>
+                        </div>      
                     </div>
 
                     <h1 class="menu-title">Synapse</h1>
@@ -798,5 +811,7 @@ in systemd service files, but not required for synctl).</p>
 
         <!-- Custom JS scripts -->
         <script type="text/javascript" src="docs/website_files/table-of-contents.js"></script>
+        <script type="text/javascript" src="docs/website_files/version-picker.js"></script>
+        <script type="text/javascript" src="docs/website_files/version.js"></script>
     </body>
-</html>
\ No newline at end of file
+</html>