Notifications for Collapsed Admin Menu


In the WordPress admin, when the left sidebar menu is expanded WordPress presents you with a highlighted number within the menu itself indicating the number of pending comments (i.e. comments in moderation) and a separate number for the number of plugins with updates.

However, if you collapse the sidebar menu, then there are no visual indications that either types of updates are available. You can view the count of updated plugins by hovering on the plugins icon (or, for comments, by hovering on the comments icon), but you must manually do that to learn of updates.

This plugin enhances the sidebar menu to display a visual indication that comments are in moderation and/or there are plugin updates available. It does so by using a different-colored background for the icon (see the screenshot). The visual indication is also updated when AJAX-based requests are made (so doing an in-line approval of the last pending comment will cause the comments icon background color to return to its non-highlighted color).

By default, the plugin utilizes WordPress’s pending/update count background highlight color, which varies depending on the admin color scheme in use by the user.

NOTE: As the plugin’s name suggests, this plugin only takes effect if the admin sidebar menu is collapsed. Also, the admin user must have JavaScript enabled.

Links: Plugin Homepage | Plugin Directory Page | GitHub | Author Homepage


  • A comparison of a collapsed admin sidebar menu for a stock WordPress installation, with the plugin activated under WP 2.8+/2.9+, and under WP 3.x+ and WP 4.x+.


  1. Install via the built-in WordPress plugin installer. Or download and unzip inside the plugins directory for your site (typically wp-content/plugins/)
  2. Activate the plugin through the ‘Plugins’ admin menu in WordPress


Why doesn’t this plugin apply when the admin sidebar menu is expanded?

There is no need for this plugin to do anything in this situation because WordPress already presents a visible count of pending comments and plugins with updates.

Can I change the background color used to highlight the comments/plugins icons?

Yes. You can customize the background color used by applying a filter to ‘c2c_collapsed_admin_menu_icon_highlight_color’. For example, in your theme’s functions.php file, you can add this line (but replace “#9932CC” with the color you want):

add_filter( 'c2c_collapsed_admin_menu_icon_highlight_color', function( $color ) { return "#9932CC"; } );

Does this plugin include unit tests?



There are no reviews for this plugin.

Contributors & Developers

“Notifications for Collapsed Admin Menu” is open source software. The following people have contributed to this plugin.



1.5 (2020-09-01)


This minor update features a rewrite of the JavaScript to use vanilla JS instead of jQuery, restructures the unit test file structure, notes compatibility through WP 5.5+, and a few behind-the-scenes changes.


  • Change: Rewrite JavaScript into vanilla JS and away from using jQuery
  • Change: Add $admin_color as second arg to c2c_collapsed_admin_menu_icon_highlight_color filter
  • Change: Remove check for theme support of HTML5 since that isn’t relevant to admin
  • Change: Restructure unit test file structure
    • New: Create new subdirectory phpunit/ to house all files related to unit testing
    • Change: Move bin/ to phpunit/bin/
    • Change: Move tests/bootstrap.php to phpunit/
    • Change: Move tests/ to phpunit/tests/
    • Change: Rename phpunit.xml to phpunit.xml.dist per best practices
  • Change: Note compatibility through WP 5.5+
  • New: Add FAQ indicating presence of unit tests
  • Unit tests:
    • New: Add tests for filter c2c_collapsed_admin_menu_icon_highlight_color
    • New: Add test for default value for get_bg_color()
    • Change: Test that JS script is both enqueued and registered

1.4.1 (2020-05-26)

  • New: Add and move existing TODO list from top of main plugin file into it
  • Change: Use HTTPS for link to WP SVN repository in bin script for configuring unit tests (and delete commented-out code)
  • Change: Note compatibility through WP 5.4+
  • Change: Update links to to be HTTPS
  • Change: Unit tests: Add comments to act as section labels for unit tests

1.4 (2019-12-14)

  • New: Add HTML5 compliance by omitting type attribute when the theme explicitly supports ‘html5’
  • New: Extract code to determine admin menu item notification background color into get_bg_color()
  • New: Add file and move all but most recent changelog entries into it
  • New: Add unit testing
  • Fix: Correct typo in GitHub URL
  • Change: Allow class to be defined outside of admin context
  • Change: Note compatibility through WP 5.3+
  • Change: Update copyright date (2020)
  • Change: Split paragraph in’s “Support” section into two

Full changelog is available in