6 min read
2026-01-30
CSS minification is the process of removing unnecessary characters from styles without changing functionality. This reduces file sizes and speeds up page loading.
Spaces and indents
Line breaks
Comments
Last semicolons in blocks
Excess zeros (`0.5` → `.5`)
| Metric | Before | After |
|---|---|---|
| File Size | 150 KB | 95 KB |
| Loading time | 120ms | 75ms |
| Savings | — | ~37% |
Upload a CSS file or paste the code
The tool will remove all extra characters
Copy the minified result
Use it in a production build
In modern projects, minification is built into the build process via Webpack, Vite or PostCSS.
See also: JS Beautifier, HTML Formatter, Flexbox Playground