Add Admin CSS

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Interface for easily defining additional CSS (inline and/or by URL) to be added to all administration pages.

Author:Scott Reilly (profile at wordpress.org)
WordPress version required:4.9
WordPress version tested:5.7.2
Plugin version:2.0.1
Added to WordPress repository:05-12-2011
Last updated:31-05-2021
Warning! This plugin has not been updated in over 2 years. It may no longer be maintained or supported and may have compatibility issues when used with more recent versions of WordPress.
Rating, %:98
Rated by:35
Plugin URI:https://coffee2code.com/wp-plugins/add-admin-...
Total downloads:119 075
Active installs:10 000+
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Ever want to tweak the appearance of the WordPress admin pages by hiding stuff, moving stuff around, changing fonts, colors, sizes, etc? Any modification you may want to do with CSS can easily be done via this plugin.

Using this plugin you’ll easily be able to define additional CSS (inline and/or files by URL) to be added to all administration pages. You can define CSS to appear inline in the admin head (within style tags), or reference CSS files to be linked (via “link rel=’stylesheet'” tags). The referenced CSS files will appear in the admin head first, listed in the order defined in the plugin’s settings. Then any inline CSS are added to the admin head. Both values can be filtered for advanced customization (see Advanced section).

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

Hooks

The plugin exposes two filters for hooking. Typically, code making use of filters should ideally be put into a mu-plugin or site-specific plugin (which is beyond the scope of this readme to explain). Bear in mind that the features controlled by these filters are also configurable via the plugin’s settings page. These filters are likely only of interest to advanced users able to code.

c2c_add_admin_css (filter)

The ‘c2c_add_admin_css’ filter allows customization of CSS that should be added directly to the admin page head.

Arguments:

  • $css (string): CSS styles.

Example:

/**
 * Add CSS to admin pages.
 *
 * @param string $css String to be added to admin pages.
 * @return string
 */
function my_admin_css( $css ) {
    $css .= "
        #site-heading a span { color:blue !important; }
        #favorite-actions { display:none; }
    ";
    return $css;
}
add_filter( 'c2c_add_admin_css', 'my_admin_css' );

c2c_add_admin_css_files (filter)

The ‘c2c_add_admin_css_files’ filter allows programmatic modification of the list of CSS files to enqueue in the admin.

Arguments:

  • $files (array): Array of CSS files.

Example:

/**
 * Add CSS file(s) to admin pages.
 *
 * @param array $files CSS files to be added to admin pages.
 * @return array
 */
function my_admin_css_files( $files ) {
    $files[] = 'http://yui.yahooapis.com/2.9.0/build/reset/reset-min.css';
    return $files;
}
add_filter( 'c2c_add_admin_css_files', 'my_admin_css_files' );
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