CSS Minifier & Beautifier
Minify CSS for production or beautify minified CSS for readability. Remove comments, whitespace, and optimize selectors. One-click copy.
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Smart PicksHow to use CSS Minifier & Beautifier
CSS Minifier & Beautifier makes it easy to optimize CSS for production or make minified CSS readable for debugging. Works entirely in your browser.
- 1Paste your CSS code into the input panel.
- 2Click 'Minify' to compress for production โ removes all whitespace and comments.
- 3Click 'Beautify' to format minified CSS with proper indentation.
- 4See compression stats (before/after size, % saved) in the stats bar.
- 5Click Copy to use the result in your project.
Common Use Cases
- Minifying CSS before deploying to production for better performance
- Beautifying third-party or minified CSS for debugging and understanding
- Removing debug comments from stylesheets before shipping
- Optimizing CSS bundle size to improve Core Web Vitals scores
Pro Tips
- Minify CSS in your build pipeline (webpack, Vite) for automated optimization.
- Beautify before editing third-party CSS to understand the structure.
- Combine with CSS variable usage to reduce repetition before minifying.
- Use browser DevTools to check which CSS rules are unused before minifying.
Frequently Asked Questions
CSS minification removes whitespace, comments, and redundant code to reduce file size. A smaller CSS file loads faster, improving page performance and Core Web Vitals scores.
Typically 20-40% for average stylesheets. Complex CSS with many comments and debug styles can see up to 60% reduction.
CSS beautification (or formatting) takes minified or poorly formatted CSS and adds proper indentation, spacing, and line breaks to make it readable for humans.
All processing happens in your browser. No CSS code is transmitted to any server.
Yes, 100% free with no registration required.
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