CSS minifier and beautifier.
Compress CSS for production, or expand minified CSS into readable code. The size saving is shown as you type. Runs in your browser, no signup.
Building a whole page? Drop your HTML, CSS and images onto yapp.page and get a live link in about two seconds. Free, no signup.
Publish a page →01 Smaller CSS, same styles
- Safe minification: strips comments and unneeded whitespace, keeps spacing inside values like
calc()intact. - Both directions: minify for production, or beautify one-line CSS back into readable code.
- See the saving: input and output sizes shown live.
- Private: runs entirely in your browser, nothing is uploaded.
02 Frequently asked questions
How do I minify CSS online?
Paste your CSS above and the minified version appears instantly with the size saving shown. Copy it into your project.
Will minifying break my styles?
No. Only comments and unneeded whitespace are removed, and spacing inside values like calc() is preserved, so the CSS behaves exactly the same.
Can it beautify minified CSS?
Yes. Switch the mode to Beautify and compact production CSS expands into clean, indented code.
Is my CSS uploaded anywhere?
No. Everything runs in your browser. Your code never leaves your machine.
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