Minifier
CSS minifier online free. Compress CSS by removing whitespace and comments. Reduce CSS file size instantly—minify CSS code.
Input CSS
Minified CSS
Minified CSS will appear here...
What gets removed?
- Comments (/* ... */)
- Extra whitespace and line breaks
- Trailing semicolons before closing braces
- Unnecessary spaces around selectors
Features
- Compress CSS file size
- Remove comments and whitespace
- Shorten color codes (optional)
- Remove unnecessary semicolons
- Statistics on savings
- Safe compression guarantees
Common Use Cases
- Prepare CSS for production deployment
- Reduce page load times (improving SEO)
- Decrease bandwidth usage
- Obfuscate code slightly
- Optimize large CSS frameworks
CSS Minification
Minification is the process of removing unnecessary characters from source code without changing its functionality. For CSS, this includes removing whitespace, newlines, comments, and block delimiters.
Benefits:
- Smaller Files: download faster for users.
- Reduced Bandwidth: saves money on hosting.
- Faster Parsing: browsers read the code slightly faster.
Examples
Valid - Original
body {
color: white;
background: #000000;
} Valid - Minified
body{color:#fff;background:#000}Frequently Asked Questions
Will minification break my layout?
No, a good minifier preserves the semantic meaning of your CSS. It only removes bytes that the browser doesn't need to understand the styles.
Can I reverse minification?
Yes, using a "Formatter" or "Beautifier" tool. It won't restore original comments or variable names if they were removed, but it will make the code readable again.
Does this handle CSS variables?
Yes, modern minifiers respect CSS variables (--var-name) and won't rename them as that could break functionality.
💡 Tips
- Automate minification in your build process (Webpack, Vite, Gulp) rather than doing it manually.
- Keep the source map if you need to debug minified CSS in production.