Online CSS minification and formatting tool: compress by removing comments and whitespace, or format with proper layout. Protects string literals.
TL;DR: Free online CSS minifier that removes comments and whitespace, shortens color values, and optimizes shorthand properties. Significantly reduces CSS size, runs locally.
This tool runs entirely in your browser. Open DevTools → Network panel and search your input — it appears in no request.
FAQ
Completely free, no registration required. Minify CSS code directly in your browser — all operations run locally with no usage limits.
It removes comments and extra whitespace, merges duplicate selectors, shortens color values (e.g., #ffffff to #fff), optimizes margin/padding shorthand, removes trailing semicolons, and more — significantly reducing CSS file size.
No. All CSS minification runs locally in your browser. Your code is never sent to any server.
Minification is irreversible. We recommend keeping the original CSS file. To restore readable formatting, use the code formatter tool, but comments and original whitespace cannot be recovered.
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