CSS Minifier

Minify and compress CSS code by removing comments, whitespace, and redundant characters. Reduces file size for faster page loads.

Input CSS
0 B
Minified Output
0 B
Original Size
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Minified Size
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Savings
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About CSS Minifier

Minify and compress CSS code instantly using our free CSS minifier. Remove comments, collapse whitespace, and eliminate unnecessary characters to reduce file size and improve page load performance.

What is CSS Minification?

CSS minification removes all characters that are not required for the browser to parse the stylesheet ??? including comments, spaces, tabs, and newlines. The result is functionally identical CSS that downloads and parses faster.

Features

  • Remove CSS comments automatically
  • Collapse whitespace and line breaks
  • Strip spaces around operators and selectors
  • Remove trailing semicolons before closing braces
  • Live size and savings statistics
  • One-click copy of minified output
  • No software installation required

Common Use Cases

  • Optimize CSS before deploying to production
  • Reduce stylesheet file size for faster page loads
  • Minimize CSS for bandwidth-limited environments
  • Compress third-party CSS libraries
  • Improve Core Web Vitals scores

Why Use This CSS Minifier?

Reduce stylesheet sizes instantly to improve website performance without changing how your CSS behaves in the browser.

Frequently Asked Questions

No. Minification only removes whitespace, comments, and redundant characters. The resulting CSS is functionally identical to the original and will produce the same visual output in every browser.

Typical savings range from 10 to 40 percent depending on how many comments and spaces your original CSS contains. Heavily commented or formatted stylesheets tend to see the largest reductions.

No. Minification runs entirely in your browser with JavaScript. Your code is never uploaded, stored, or sent anywhere outside your device.

Yes. The tool handles large stylesheets well. Paste the CSS directly into the input area and the minified result appears immediately in the output section.

Yes. All block comments enclosed in /* and */ are removed during minification. If you need to keep a specific comment such as a license header, add it back manually to the minified output.