CSS Minifier
Shrink your CSS files by removing extra spaces and comments to speed up your site.
Input CSS
Safe Browser Processing
No code leaves your device.
Optimized CSS
Optimization reduced 0% of the original file size.
Free Online CSS Minifier & Stylesheet Compressor
Speed up your website's load time with our Easy CSS Minifier. This simple tool strips away all the unnecessary characters from your CSS files like extra spaces, tabs, newlines, and developer comments making your stylesheets significantly smaller without changing how they look on your site. Smaller files mean faster downloads and a better experience for your RankWox visitors.
Instant Compression
Our engine shrinks your CSS in milliseconds, allowing you to quickly optimize your site for Google PageSpeed Insights and Core Web Vitals.
Expert Cleaning
We remove comments and collapse multi-line rules into single rows, ensuring your code is as tight as possible for production use.
100% Private
Your CSS code is processed entirely in your browser. We never transmit your styles to our servers, keeping your design work secure.
How to Minify Your CSS in 3 Steps
Paste Styles
Copy your CSS from your text editor and paste it into the "Input CSS" box at the top of this page.
Automatic Minify
Our tool automatically minifies your code as you paste. You'll see the results instantly in the right-hand box.
Copy & Build
Grab your minified CSS with the "Copy" button and replace your original stylesheet for a faster website.
Why Choose RankWox CSS Minifier?
| Feature | RankWox Minifier | Other Tools |
|---|---|---|
| Processing Location | Your Browser (Local) | Remote Server |
| Ads & Clutter | Clean & Minimalist | High Ad Density |
| Formatting Logic | Aggressive De-whitespace | Often Leaves Newlines |
| User Privacy | No Data Collection | Logs Input Data |
CSS Minification FAQs
Does minification affect my website's design?
No. Minification only removes the "formatting" that humans like (spaces, tabs, comments). The browser reads the code exactly the same way.
Why should I minify my CSS?
Smaller files download faster. Faster websites keep users happy and rank better in search results like Google and Bing.
Should I minify my development files?
We recommend keeping your original files for editing and using our minifier only when you're ready to publish your site online.
Can I un-minify CSS later?
Yes, using a "CSS Formatter" or "Prettifier." However, original comments will be lost forever if you don't keep a backup.