CSS Minifier & Beautifier
Minify or beautify CSS code.
Frequently Asked Questions
What does CSS minification do?
Minification removes all unnecessary characters from CSS without changing functionality: comments, whitespace, newlines, and redundant semicolons. It may also shorten color codes (#ffffff to #fff) and remove units from zero values (0px to 0). The result is smaller file sizes and faster page loads.
How much can minification reduce file size?
Typical CSS minification reduces file size by 20-40%. Files with many comments and verbose formatting see larger reductions. Combined with gzip compression on the server, the total transfer size can be reduced by 70-85%. The tool displays exact before/after sizes and percentage savings.
Does minification change how my CSS works?
No — minification only removes characters that have no effect on rendering. Your selectors, properties, values, and cascade order remain identical. The CSS will produce exactly the same visual result in every browser. Always minify production CSS for performance.
What does the beautifier do?
The beautifier takes minified or poorly formatted CSS and adds consistent indentation, line breaks, and spacing. Each rule gets its own line, properties are indented within selectors, and blank lines separate rule blocks. This makes the CSS human-readable for editing and debugging.
Can I minify CSS with @import or @media rules?
Yes — the minifier correctly handles all CSS at-rules including @import, @media, @keyframes, @font-face, and @supports. Nested rules maintain proper structure after minification. Media query conditions are preserved exactly as written.