Developer Essentials · Free Tool
CSS Minifier
Shrink CSS by stripping comments and needless whitespace — safely preserving strings, calc() spacing and combinators. See how many bytes you save. Runs in your browser.
How it works
Minifying removes what browsers ignore: /* comments */, indentation, line breaks, and spaces around { } : ; ,. This tool is deliberately conservative — it protects text inside quotes and leaves spaces around + - > ~ untouched, so calc() expressions and selector combinators keep working. Everything runs locally; your CSS is never uploaded.