CSS Minifier
Remove comments and unnecessary whitespace from a stylesheet.
Your result will appear here as soon as you add some input.
How to use it
- 1Paste your input into the input box, or type it directly.
- 2Adjust the options if you need something other than the defaults.
- 3The result updates as you type.
- 4Copy the result to your clipboard or download it as a file.
About the CSS Minifier
Comments, redundant whitespace and the final semicolon in each block are removed. Nothing is reordered or merged: the cascade is order-sensitive, and a minifier that reorders declarations changes what the page looks like.
Typical savings on hand-written CSS are 20-30%. Gzip or Brotli on the server recovers most of the rest, so minification matters less than it used to - but it still helps on the critical path.
Questions people ask
Is your code uploaded to a server?
No. This tool runs entirely in your browser using standard web APIs, so your code never leaves your device. You can confirm it by opening your browser's network panel while the tool runs, or by disconnecting from the internet after the page has loaded.
Is it free, and do I need an account?
Yes, it is free, and there is no account, no sign-up and no watermark on the result. The project is funded by optional donations.