diff --git a/app/layout/nav_menu.phtml b/app/layout/nav_menu.phtml
index d76eb776d..124189c68 100644
--- a/app/layout/nav_menu.phtml
+++ b/app/layout/nav_menu.phtml
@@ -175,6 +175,10 @@
 		</a>
 	</div>
 
+	<div class="stick" id="nav_menu_hooks">
+		<?= Minz_ExtensionManager::callHook('nav_menu') ?>
+	</div>
+
 	<div class="item search">
 		<form action="<?= _url('index', 'index') ?>" method="get">
 			<input type="search" name="search" class="extend" value="<?php
diff --git a/app/views/helpers/javascript_vars.phtml b/app/views/helpers/javascript_vars.phtml
index 11373b76f..089175f7d 100644
--- a/app/views/helpers/javascript_vars.phtml
+++ b/app/views/helpers/javascript_vars.phtml
@@ -1,6 +1,7 @@
 <?php
 $mark = FreshRSS_Context::$user_conf->mark_when;
 $s = validateShortcutList(FreshRSS_Context::$user_conf->shortcuts);
+$extData = Minz_ExtensionManager::callHook('js_vars', []);
 echo htmlspecialchars(json_encode(array(
 	'context' => array(
 		'anonymous' => !FreshRSS_Auth::hasAccess(),
@@ -62,4 +63,5 @@ echo htmlspecialchars(json_encode(array(
 		'read' => rawurlencode(_i('read')),
 		'unread' => rawurlencode(_i('unread')),
 	),
+	'extensions' => $extData,
 ), JSON_UNESCAPED_UNICODE), ENT_NOQUOTES, 'UTF-8');
diff --git a/docs/en/developers/03_Backend/05_Extensions.md b/docs/en/developers/03_Backend/05_Extensions.md
index 5ba90bc8c..1ddfdb208 100644
--- a/docs/en/developers/03_Backend/05_Extensions.md
+++ b/docs/en/developers/03_Backend/05_Extensions.md
@@ -327,9 +327,11 @@ The following events are available:
 * `feed_before_actualize` (`function($feed) -> Feed | null`): will be executed when a feed is updated. The feed (instance of FreshRSS\_Feed) will be passed as parameter.
 * `feed_before_insert` (`function($feed) -> Feed | null`): will be executed when a new feed is imported into the database. The new feed (instance of FreshRSS\_Feed) will be passed as parameter.
 * `freshrss_init` (`function() -> none`): will be executed at the end of the initialization of FreshRSS, useful to initialize components or to do additional access checks
+* `js_vars` (`function($vars = array) -> array | null`): will be executed if the `jsonVars` in the header will be generated
 * `menu_admin_entry` (`function() -> string`): add an entry at the end of the "Administration" menu, the returned string must be valid HTML (e.g. `<li class="item active"><a href="url">New entry</a></li>`)
 * `menu_configuration_entry` (`function() -> string`): add an entry at the end of the "Configuration" menu, the returned string must be valid HTML (e.g. `<li class="item active"><a href="url">New entry</a></li>`)
 * `menu_other_entry` (`function() -> string`): add an entry at the end of the header dropdown menu (i.e. after the "About" entry), the returned string must be valid HTML (e.g. `<li class="item active"><a href="url">New entry</a></li>`)
+* `nav_menu` (`function() -> string`): will be executed if the navigation was built.
 * `nav_reading_modes` (`function($reading_modes) -> array | null`): **TODO** add documentation
 * `post_update` (`function(none) -> none`): **TODO** add documentation
 * `simplepie_before_init` (`function($simplePie, $feed) -> none`): **TODO** add documentation
diff --git a/lib/Minz/ExtensionManager.php b/lib/Minz/ExtensionManager.php
index b2814e4a3..e802aad16 100644
--- a/lib/Minz/ExtensionManager.php
+++ b/lib/Minz/ExtensionManager.php
@@ -39,6 +39,10 @@ class Minz_ExtensionManager {
 			'list' => array(),
 			'signature' => 'NoneToNone',
 		),
+		'js_vars' => array(  // function($vars = array) -> array | null
+			'list' => array(),
+			'signature' => 'OneToOne',
+		),
 		'menu_admin_entry' => array(  // function() -> string
 			'list' => array(),
 			'signature' => 'NoneToString',
@@ -51,6 +55,10 @@ class Minz_ExtensionManager {
 			'list' => array(),
 			'signature' => 'NoneToString',
 		),
+		'nav_menu' => array(  // function() -> string
+			'list' => array(),
+			'signature' => 'NoneToString',
+		),
 		'nav_reading_modes' => array(  // function($readingModes = array) -> array | null
 			'list' => array(),
 			'signature' => 'OneToOne',
diff --git a/p/scripts/main.js b/p/scripts/main.js
index f8d20a622..0dbae3913 100644
--- a/p/scripts/main.js
+++ b/p/scripts/main.js
@@ -43,6 +43,7 @@ var context;
 	context.icons = json.icons;
 	context.icons.read = decodeURIComponent(context.icons.read);
 	context.icons.unread = decodeURIComponent(context.icons.unread);
+	context.extensions = json.extensions;
 }());
 //</Global context>