CSS Minifier — Compress CSS Code Instantly

CSS minification removes all unnecessary characters from CSS code without changing its functionality. This includes whitespace, newlines, comments, and redundant semicolons. Minified CSS loads faster because browsers download fewer bytes. A typical CSS file shrinks by 30-50% after minification.

Minification typically reduces CSS file size by 30-50%. For a 100KB CSS file, minification might bring it down to 50-70KB. When combined with gzip compression (which most servers use), the total savings can reach 80-90%. This tool shows the exact size savings for your specific CSS.

Yes, always minify CSS for production websites. It reduces page load time, bandwidth usage, and improves Core Web Vitals scores. Keep your original unminified CSS for development. Most build tools (Webpack, Vite, etc.) have built-in CSS minification. This tool is useful when you need to manually minify CSS.

While you could manually remove comments and whitespace, it is tedious and error-prone. This free online tool does it instantly with one click. For automated minification, use build tools like cssnano (npm package), or online tools like this one. Always keep a copy of your original unminified CSS.