Free CSS/JS Minifier

This is a basic whitespace/comment-stripping minifier — for CSS it's generally safe and reliable. For JavaScript, a true minifier also does variable renaming and dead-code elimination for further size reduction; use a build-tool minifier (Terser, esbuild) for production JS bundles where correctness on complex code matters most.

Worked Example

Example (CSS): .btn {\n color: red;\n /* important */\n} minifies to .btn{color:red;}.

Formula / Method

Regex-based: strips /* */ and // comments, collapses whitespace, and removes unnecessary spaces around braces/colons/semicolons.

Worked Example

Example (CSS): .btn {\n color: red;\n /* important */\n} minifies to .btn{color:red;}.

Formula / Method

Regex-based: strips /* */ and // comments, collapses whitespace, and removes unnecessary spaces around braces/colons/semicolons.