CSS Minifier Online

What is CSS Minification?

CSS minification reduces file sizes by removing unnecessary whitespace, comments, and redundant characters. Minified CSS loads faster, reduces bandwidth, and improves page performance.

How to Use

  1. Paste CSS code into the input box.
  2. Click "Minify".
  3. View the size comparison before and after.
  4. Copy the minified code.

Features

  • Remove comments
  • Remove whitespace
  • Remove trailing semicolons
  • Size comparison
  • One-click copy
  • Browser-local processing
  • No signup
  • Completely free

FAQ

Will CSS minification affect styles?

No. Our minifier removes whitespace and comments that don't affect rendering. Minified CSS is identical to the original.

Should I test after minification?

We recommend testing minified CSS before deploying to production to ensure all styles work correctly.

Will data be uploaded?

No! All minification happens locally in your browser. Code never leaves your device.