How to use this tool
Paste CSS into the editor or load a CSS file. Choose the optimization settings you want. Select Minify CSS to create compact output. Use Beautify CSS when readable formatting is required. Review validation messages before replacing production stylesheets. Copy the result or download it as a CSS file.
Tip: press Ctrl+Enter or Cmd+Enter inside the editor to minify immediately. Basic validation detects unmatched braces and suspicious declarations. Complex CSS remains best verified in your browser after minification.