Add Admin CSS
Easily define additional CSS (inline and/or by URL) to be added to all administration pages.
4.9(35 reviews)
·10K+ active installs·Updated 3 months agoAs of April 2026, Add Admin CSS is a WordPress css plugin with 10K+ active installations and a 4.9/5 rating from 35 reviews. It has been downloaded 140K+ times in total. Requires WordPress 5.5+ and PHP false+. Available on WordPress.org since 2011. Downloads are up 6% this week. Top alternative: WPCode – Insert Headers and Footers +….
4.9/535 reviews
10K+active installs
140K+total downloads
15 yearssince 2011
Overview
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…
Screenshots
Ratings & Reviews
4.935 reviews
5 ★
34
4 ★
0
3 ★
0
2 ★
1
1 ★
0
Recent Reviews
Very Nice Perk
by ellencarnahan·6 months ago
I really like to customize my admin experience, and installed this plugin to distinguish the icons when other plugin developers default to things like “post icon.” Seems to lack support but that is how it goes with open source plugins. Many thanks when it works 🙂
AWESOME
by mikeecho·3 years ago
Awesome plugin, works fantastic
Well done!
Working great !!!
by ipchania·3 years ago
Working great !!!
footer CSS code
by Jak·4 years ago
Hi, I am a beginner and have no idea about CSS coding and wondered if someone can help with providing the CSS code to replace the footer color of the website with an image, thanks.
Worked perfectly
by Topher·4 years ago
This plugin did *exactly* what I wanted. A plugin had dropped some ad stuff into the Publish box, but it had a good CSS class, so I just hid it.
I really like that the text field for holding the CSS is intelligent and does things like auto include closing brackets, code coloring, etc.
Download Trends
Today: 45Yesterday: 48This week: 275Period total: 20K
Compatibility
| WordPress | 5.5+ requiredTested up to 6.9.4 |
| PHP | false+ required |
Version Adoption
v2.5
45.6%
v2.0
34.5%
Other
19.9%
Top Alternatives to Add Admin CSS
Frequently Asked Questions
Changelog
2.5.1 (2025-12-02)
Highlights:
A bugfix release to address the overzealous encoding of some valid CSS characters introduced in v2.5.
Details:
- Fix: Escape only the minimum of characters so that valid CSS characters don’t get escaped. Props kevinvanrijn.
- Change: Note compatibility through WP 6.9+
Contributors
Plugin data sourced from WordPress.org. Analysis and metrics by PluginSift.