How to use Compress CSS
- Type or paste your CSS into Compress CSS's input area.
- The result is computed live in your browser as you edit the input.
- Finish by choosing Copy to take the output with you.
About this tool
Compress CSS is a static, client-side tool with no backend. Compress CSS works on your stylesheet locally and returns the result instantly.
Modern CSS syntax is preserved so your selectors and values come back intact. Your input never leaves the page, and no account or install is required.
Frequently asked questions
How do I use Compress CSS?
Compress CSS lets you process your input right in the browser, with the result shown instantly and nothing uploaded.
Is Compress CSS free to use?
Yes — Compress CSS is completely free, with no usage limits.
Where is my data processed by Compress CSS?
Entirely in your browser — Compress CSS keeps your data on your own machine and sends nothing anywhere.
Does Compress CSS support modern CSS syntax?
Yes. Compress CSS handles current CSS in your browser and leaves your selectors and values untouched.
Does Compress CSS work on mobile?
Yes — Compress CSS is just a web page and runs on any modern browser, including phones and tablets.