Add support for admin.css @ THEME_DIR (normal or child)
Alternatives to Admin CSS MU
Plugins below are selected for functional relevance and current directory signals. Active-install counts do not affect this ranking.
Relevant replacements
WordPress plugins with similar use cases
Compatibility and update metadata provide context, not a quality guarantee. Review each plugin’s details for your site.
Custom CSS & JavaScripts functions.
With WP Custom Admin Interface you can easily customise the WordPress admin and login interfaces.
Easily add custom ID, Class, and Data attributes to WordPress menu items directly from the admin panel — no coding required.
Add Admin CSSv2.5.1
Easily define additional CSS (inline and/or by URL) to be added to all administration pages.
Governance Guardrailsv1.0.0
Governance Guardrails provides file-based rules for managing admin behavior, capabilities, uploads, and operational hardening from code.
Adds custom CSS animations to Bricks interactions via a simple admin UI with preview and search.
Incognito Admin Managerv1.0.2
Customize your WordPress login screen, style the admin interface, and control menu visibility per user role.
WP Killswitchv0.1.3
WP Killswitch lets you non-destructively white out a Wordpress website while this plugin is active (recommended as an mu-plugin).
String Replacerv1.4.3
Replace any string visible to site visitors or found in outgoing emails—titles, content, footers, and more. Comes with a dynamic admin interface.