Simple Custom CSS Plugin vs Add Admin CSS (2026)
Detailed side-by-side comparison of two WordPress plugins, based on real-time data from WordPress.org.
Simple Custom CSS Plugin
100K+ active installs
Free
Quick Verdict
As of April 2026, Add Admin CSS has a higher user rating (4.9/5 from 35 reviews) while Simple Custom CSS Plugin leads in active installations (100K+ vs 10K+). Both are free WordPress plugins. Simple Custom CSS Plugin has accumulated 3.1M+ total downloads while Add Admin CSS has 140K+.
Detailed Comparison
| Metric | Simple Custom CSS Plugin | Add Admin CSS | |
|---|---|---|---|
| Rating | 4.7/5 | ► | 4.9/5 |
| Total Reviews | 159 | ◄ | 35 |
| Active Installs | 100K+ | ◄ | 10K+ |
| Total Downloads | 3.1M+ | ◄ | 140K+ |
| Support Resolution | N/A | N/A | |
| Last Updated | 1 year ago | ► | 3 months ago |
| First Released | 2013 | 2011 | |
| Age | 13 years | 15 years | |
| WP Requires | 3.0.1+ | 5.5+ | |
| PHP Requires | false+ | false+ | |
| Business Model | Free | Free | |
| Latest Version | 4.0.7 | 2.5.1 |
Rating Breakdown
Simple Custom CSS Plugin
Add Admin CSS
Download Trends
Over the past 30 days, Simple Custom CSS Plugin averaged approximately 261 daily downloads while Add Admin CSS averaged 40.
Recent Reviews
Simple Custom CSS Plugin Reviews
Blocks Media view
This plugin block me from viewing my media files when I am, for instance, trying to add an image block to a page. Except for this I think it is an excellent plugin. My work-around will be to disable t
So simple yet works perfect!
İt’s so easy to use and does the job as described.
Useful but doesn’t know modern properties
Simple and useful, but modern CSS properties like clamp(), repeat(), margin-inline, or less common units like dvh throw syntax errors. For beginners, this can be really confusing.
Add Admin CSS Reviews
Very Nice Perk
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 ho
AWESOME
Awesome plugin, works fantastic Well done!
Working great !!!
Working great !!!
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Frequently Asked Questions
Is Simple Custom CSS Plugin or Add Admin CSS more popular?
Which has better ratings — Simple Custom CSS Plugin or Add Admin CSS?
Are Simple Custom CSS Plugin and Add Admin CSS free?
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Plugin data sourced from WordPress.org. Comparison and analysis by PluginSift.