CSS Minifier - Minify CSS Code Online Free

Free online CSS minifier. Compress and minify your CSS by removing whitespace, comments, and unnecessary characters. Reduce stylesheet size and improve page speed.

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How to Use the CSS Minifier

  1. Paste your CSS code in the input area
  2. Click Minify — instantly compresses your styles
  3. Copy the result — use the minified CSS anywhere

Minifying CSS removes whitespace, comments, and redundant formatting to reduce file size. Smaller CSS files mean faster page loads and better Core Web Vitals scores. All processing happens in your browser.

Features

  • Whitespace removal — strips spaces, tabs, newlines
  • Comment stripping — removes /* */ comments
  • Before/after comparison — see exact savings
  • Reduction percentage — track compression ratio
  • One-click copy — copy minified output instantly