About CSS Minifier
Minify CSS by stripping comments, whitespace, and line breaks to shrink your stylesheet and speed up page loads. Paste your CSS and copy the compressed result.
How to Use
- Paste your CSS.
- The tool removes comments and unnecessary whitespace.
- See the size before and after.
- Copy the minified CSS for production.
Why Use This Tool?
- Accurate — built on precise, well-tested mathematical formulas.
- Instant — all calculations happen client-side for zero latency.
- Private — no data is sent to any server; your information stays on your device.
- Free — no sign-up, no limits, no hidden costs.
Frequently Asked Questions
Does minifying change how my CSS works?
No. Minification only removes characters that don't affect behaviour (comments, spaces, newlines). The rules and selectors are identical — just smaller.
How much smaller will my CSS get?
It depends on formatting and comments, but 20–50% size reduction is common. Combined with gzip/brotli on your server, the transfer size shrinks even more.
Should I keep an unminified copy?
Yes — minified CSS is hard to edit. Keep your original (source) file for development and minify only the version you deploy.