Minify CSS to shrink file sizes, or beautify minified CSS for readability. Pure client-side — your code never leaves your browser.
Typical reductions are 20–40% before gzip — more if your source has lots of comments or whitespace. Combined with gzip/Brotli compression, minified CSS often loads 60–80% faster than formatted CSS over the wire.
No. Only whitespace, comments, and redundant semicolons are removed. Selectors, declarations, media queries, and string contents are preserved exactly. If something breaks, the original CSS likely had a bug.
Yes — native CSS nesting, custom properties, container queries, layers, and @supports blocks are passed through correctly. Quoted strings (e.g. content: ";") are preserved verbatim so the minifier never breaks them.