CSS Minifier
Use this free online CSS Minifier to minify and compress CSS for faster websites. It works instantly in your browser, and your data never leaves your device.
About the CSS Minifier
A CSS minifier removes comments and whitespace and applies safe optimisations like merging rules and shortening colors, reducing file size so pages render faster.
Also known as: minify css, css compressor.
How to use the CSS Minifier
- Paste your input into the box above, upload a file, or click Sample to try an example.
- Pick any options you need. The CSS Minifier processes your input instantly as you type.
- Click Copy to copy the output or Download to save it as a file.
Features
- Free with no signup and no daily limits
- Private: runs entirely in your browser
- Works on mobile, tablet and desktop
- Upload files and download results
- Live results as you type, with clear error messages
- Clean, fast interface with no popups
Frequently asked questions
Is the CSS Minifier free to use?
Yes. The CSS Minifier is completely free with no signup, no limits on normal use and no watermark.
Is my data safe?
Yes. Everything is processed by JavaScript inside your own browser. Your text is never uploaded to our server or stored anywhere.
Can I choose the indentation?
Yes. Pick 2 spaces, 4 spaces or tabs from the options, and the output updates instantly.
Does it work offline and on mobile?
Once the page has loaded, the tool runs in your browser and works on phones, tablets and desktops.
What else is this tool called?
People also search for it as minify css, css compressor. It is the same free tool.