Simple Custom CSS Plugin vs Add Custom Codes – Insert Header… (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
Add Custom Codes – Insert Header…
1.0K+ active installs
Free
Quick Verdict
As of April 2026, Add Custom Codes – Insert Header… has a higher user rating (5/5 from 6 reviews) while Simple Custom CSS Plugin leads in active installations (100K+ vs 1.0K+). Both are free WordPress plugins. Simple Custom CSS Plugin has accumulated 3.1M+ total downloads while Add Custom Codes – Insert Header… has 17K+.
Detailed Comparison
| Metric | Simple Custom CSS Plugin | Add Custom Codes – Insert Header… | |
|---|---|---|---|
| Rating | 4.7/5 | ► | 5/5 |
| Total Reviews | 159 | ◄ | 6 |
| Active Installs | 100K+ | ◄ | 1.0K+ |
| Total Downloads | 3.1M+ | ◄ | 17K+ |
| Support Resolution | N/A | N/A | |
| Last Updated | 1 year ago | ► | 2 weeks ago |
| First Released | 2013 | 2017 | |
| Age | 13 years | 9 years | |
| WP Requires | 3.0.1+ | 6.6.2+ | |
| PHP Requires | false+ | 7.4+ | |
| Business Model | Free | Free | |
| Latest Version | 4.0.7 | 5.0 |
Rating Breakdown
Simple Custom CSS Plugin
Add Custom Codes – Insert Header…
Download Trends
Over the past 30 days, Simple Custom CSS Plugin averaged approximately 261 daily downloads while Add Custom Codes – Insert Header… 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 Custom Codes – Insert Header… Reviews
Very good
Works perfectly. The syntax highlighter is sometimes incorrect, but it doesn’t affect functionality. Thanks to the developers.
Easy to use
Very good and easy to use
Great
This is the plugin I’m waiting for a long time while,and I’m very happy with this plugin This topic was modified 3 years, 7 months ago by anilnarayanan.
More Plugins Worth Comparing
Top alternatives in the same category as Simple Custom CSS Plugin and Add Custom Codes – Insert Header…
Easily add Custom CSS or JS to your website with an awesome editor.
Include inline javascript, stylesheets, CSS code or anything you want in Header and Footer areas of your WordPress with ease.
Add CSS to your website through an admin editor, the Customizer or a metabox for page/post specific CSS.
Add custom css to the whole website and to specific posts and pages.
Easily add custom CSS and JavaScript code to your WordPress site, with draft previewing, revisions, and minification!
Frequently Asked Questions
Is Simple Custom CSS Plugin or Add Custom Codes – Insert Header… more popular?
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Plugin data sourced from WordPress.org. Comparison and analysis by PluginSift.