Compress and minify your CSS instantly with this free online tool. Removes comments, extra whitespace, and unnecessary characters to reduce file size — all without leaving your browser.
How to Use This CSS Minifier
- Paste your CSS code in the input area
- Click Minify CSS to compress
- See size savings instantly
- Copy the minified output for your project
Why Minify CSS?
- Faster load times — smaller files download quicker, improving Core Web Vitals
- Less bandwidth — save on hosting and CDN costs
- Better SEO — Google considers page speed as a ranking factor
- Production-ready — keep readable source, deploy minified
What This Minifier Does
- Removes all CSS comments (
/* ... */) - Collapses whitespace and line breaks
- Removes unnecessary spaces around selectors and properties
- Strips trailing semicolons before closing braces
Privacy
This CSS minifier runs 100% in your browser. Your CSS code is never uploaded to any server. Safe for proprietary stylesheets.
Recommended Reading
Level up your CSS skills:
- CSS: The Definitive Guide — essential reading for mastering CSS
- Every Layout: Relearn CSS Layout — essential reading for modern CSS
- Web Performance in Action — essential reading for optimizing web assets
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