Free Tools / CSS Minifier
CSS Minifier
Paste your CSS to strip comments and unnecessary whitespace and get a smaller file. Runs entirely in your browser — nothing is uploaded.
Paste your CSS to strip comments and unnecessary whitespace and get a smaller file. Runs entirely in your browser — nothing is uploaded.
Comments and whitespace help humans, not browsers. Removing them makes stylesheets smaller and pages faster to load.
Less CSS to download and parse, especially on mobile connections.
Selectors and properties are not renamed or reordered, so output stays easy to diff.
Handy for a snippet or a small site where a build pipeline is overkill.
See original size, minified size and percentage saved.
It only removes comments and whitespace, so yes, but keep your original source file.
Renaming needs a full build step and knowledge of your HTML. This tool keeps things predictable.
No. Everything runs locally.
Upzilla tracks response time from multiple locations and alerts you on regressions.