CSS Minifier & Beautifier - Stats, Safe Compression, Local

Minify or beautify CSS locally—no uploads. Remove comments/whitespace, view size savings stats, or unminify code for readability. Copy the result now.

Click for theater mode

How to Use

  1. Paste your CSS into the input.
  2. Click Minify to compress, or Beautify to format for readability.
  3. Check compression stats (bytes saved and percentage).
  4. Copy the output and use it in your project.

Core Features

  • Remove Comments/Whitespace: Strip comments, newlines, and extra spaces to shrink CSS fast.
  • File Size Savings: Show original vs minified bytes and the exact savings percentage.
  • Unminify CSS: Restore indentation and line breaks to make minified CSS readable again.
  • Safe Compression: Focus on non-breaking whitespace/comment removal to preserve behavior.
  • Keep code private: Runs entirely in your browser with local-only processing.

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Calculation Logic

  • Minify: Remove /*...*/ comments and collapse whitespace safely.
  • Beautify: Insert newlines and indentation around braces and declarations.
  • Stats: Compute byte sizes and savings percentage from the output.

FAQ

Does minifying CSS improve SEO?

Often yes. Smaller CSS can load faster and help Core Web Vitals like FCP, which can indirectly support search performance.

How to read minified CSS?

Use Beautify. We add indentation and line breaks to restore human-readable structure.

Is my data safe (local/privacy)?

Yes. Everything runs locally in your browser with no uploads or server storage.

Is it free? Any limits?

It’s free. For very large CSS, minify in sections for the best responsiveness.

Is CSS minification lossless?

For standard CSS, whitespace/comment minification is typically lossless. Always test edge cases that may rely on unusual parsing behavior.