Description
At a glance
Add Admin CSS v2.5.1 — free WordPress plugin download. Key facts: 10K+ active installs · 4.9/5 rating from 35 reviews · updated December 8, 2025 · requires WordPress 5.5+.
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. Hooks are provided to customize the output of the CSS, the CSS files, and if/when the CSS should even be output (see Hooks section).
Links: Plugin Homepage | Plugin Directory Page | GitHub | Author Homepage
Developer Documentation
Developer documentation can be found in DEVELOPER-DOCS.md. That documentation covers the hooks provided by the plugin.
As an overview, these are the hooks provided by the plugin:
c2c_add_admin_css: Filter to customize the CSS that should be added directly to the admin page head.c2c_add_admin_css_files: Filter to customize the list of CSS files to enqueue in the admin.c2c_add_admin_css_disable_css: Filter to customize if the CSS defined via this plugin should be output or not.
Frequently asked questions
What do I get when I download Add Admin CSS?
Add Admin CSS 2.5.1 is the latest version. It is a WordPress plugin you can download here free of charge under the GPL license, with the complete feature set included and no trial limitations. It holds a 4.9/5 rating from 35 user reviews.
Does Add Admin CSS cost anything?
No. Add Admin CSS 2.5.1 is 100% free — the full GPL version, not a trial or demo. There are no download limits, no accounts to create, and no upsells during the download.
How do I install Add Admin CSS 2.5.1?
Download the ZIP file from this page, then in your WordPress dashboard go to Plugins → Add New → Upload Plugin, choose the file, click Install Now, then Activate. The plugin works immediately after activation — no license key or extra setup is required for the core features.
What are the requirements for Add Admin CSS?
Add Admin CSS 2.5.1 requires WordPress 5.5 or higher. Most modern WordPress hosts already meet these versions. Running older versions may cause features to break, so update WordPress and PHP first if your site is behind.
When was Add Admin CSS last updated?
Version 2.5.1 was last updated on December 8, 2025. This page is refreshed automatically, so the download here always matches the newest version we have verified.
Is the Add Admin CSS download safe?
The file is sourced directly from the official WordPress.org repository — the same file the developer published. It is served unmodified, so what you install here is byte-identical to the official release.
Version: 2.5.1
Updated: October 1, 2026
Technical details
| Version | 2.5.1 |
|---|---|
| Last updated | December 8, 2025 |
| Active installs | 10,000+ |
| Rating | ★★★★★ 4.9/5 (35 reviews) |
| Requires WordPress | 5.5 or higher |
| Author | Scott Reilly |
| Tags | admin, admin-theme, css, style, stylesheets |
Demo Add Admin CSS
Download Add Admin CSS
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