CSS Minifier
Minify and compress CSS
About This Tool
CSS minification strips all whitespace, comments, and redundant characters from a stylesheet while preserving its full functionality. The browser interprets minified CSS identically to the original β it's purely a size reduction for faster delivery.
On large stylesheets, minification typically reduces size by 20β50%. Combined with gzip compression on the server, the savings are even greater. Most build tools (Webpack, Vite, Parcel) include CSS minification automatically for production builds.
How to Use
- Paste your CSS into the input panel on the left.
- Click Minify to compress the CSS.
- The savings indicator shows how many characters were removed.
Use Cases
Front-end developers reduce CSS bundle size before deploying to production. Useful for manually minifying third-party stylesheets or legacy CSS not managed by a build tool. Also handy for quickly testing how much a stylesheet can be compressed.
FAQ
- Will minification change how my CSS behaves? β No. Minification only removes whitespace, comments, and redundant semicolons β it never modifies selectors, property names, or values.
- Are CSS comments removed? β Yes. All comments (/* ... */) are stripped during minification to reduce file size.
- Is my CSS sent to a server? β No. All processing happens locally in your browser. Your CSS never leaves your device.