Simple Custom CSS Plugin vs WP Optimize Speed By xTraffic (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
WP Optimize Speed By xTraffic
60 active installs
Free
Quick Verdict
As of April 2026, Simple Custom CSS Plugin has a higher user rating (4.7/5 from 159 reviews) and leads in active installations (100K+ vs 60). Both are free WordPress plugins. Simple Custom CSS Plugin has accumulated 3.1M+ total downloads while WP Optimize Speed By xTraffic has 30K+.
Detailed Comparison
| Metric | Simple Custom CSS Plugin | WP Optimize Speed By xTraffic | |
|---|---|---|---|
| Rating | 4.7/5 | ◄ | 3.8/5 |
| Total Reviews | 159 | ◄ | 10 |
| Active Installs | 100K+ | ◄ | 60 |
| Total Downloads | 3.1M+ | ◄ | 30K+ |
| Support Resolution | N/A | N/A | |
| Last Updated | 1 year ago | ◄ | 10 years ago |
| First Released | 2013 | 2015 | |
| Age | 13 years | 11 years | |
| WP Requires | 3.0.1+ | 3.0.1+ | |
| PHP Requires | false+ | false+ | |
| Business Model | Free | Free | |
| Latest Version | 4.0.7 | 1.1.5 |
Rating Breakdown
Simple Custom CSS Plugin
WP Optimize Speed By xTraffic
Download Trends
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.
WP Optimize Speed By xTraffic Reviews
No reviews yet
More Plugins Worth Comparing
Top alternatives in the same category as Simple Custom CSS Plugin and WP Optimize Speed By xTraffic
Easily add code snippets in WordPress. Insert header & footer scripts, add PHP code snippets with conditional logic, insert ads pixel code, and more.
An easy, clean and simple way to enhance your site with code snippets.
Add custom classes and ids plus first, last, even, odd, and numbered classes to your widgets.
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.
Purges cache on WPEngine, W3TC, WP Super Cache, WP Fastest Cache when widgets, menus, settings update. Forces browsers to reload CSS and JS files.
Frequently Asked Questions
Is Simple Custom CSS Plugin or WP Optimize Speed By xTraffic more popular?
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Are Simple Custom CSS Plugin and WP Optimize Speed By xTraffic free?
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Plugin data sourced from WordPress.org. Comparison and analysis by PluginSift.