CSS Minifier
Shrink CSS by stripping comments, collapsing whitespace, and tightening punctuation. See byte savings live.
CSS Minifier — CSS minification removes comments, collapses whitespace, drops the last semicolon in a rule, and tightens the spaces around punctuation. The result is a CSS file that is functionally identical to the source but typically 20-40% smaller.
CSS never leaves your browser.
What is css minifier?
CSS minification removes comments, collapses whitespace, drops the last semicolon in a rule, and tightens the spaces around punctuation. The result is a CSS file that is functionally identical to the source but typically 20-40% smaller.
Use this when you have a hand-written stylesheet and want a quick minified copy without setting up a build pipeline. For production projects, run your CSS through a proper tool (cssnano, lightningcss) as part of your build.
How to use it
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Paste your CSS
A snippet, a file, or an entire stylesheet.
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Read the result
The minified CSS appears instantly.
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Copy
One click to put the minified CSS on your clipboard.
Examples
Comment stripping
A simple comment-and-whitespace example.
/* header */ .a { color: red; } Result: .a{color:red}
Punctuation tightening
Spaces around { } ; : , are removed.
a , b > c { color : red ; } Result: a,b>c{color:red}
Frequently asked questions
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