CSS Minifier
Minify CSS by stripping comments and whitespace to shrink file size.
Removes comments and unnecessary whitespace and tightens punctuation. It keeps your rules intact — no renaming or restructuring. Runs entirely in your browser.
Paste your CSS to strip comments and collapse whitespace, producing a smaller file that loads faster. The tool reports the before/after size and the percentage saved, and keeps your rules intact — no renaming or risky restructuring. Runs entirely in your browser.
How to use the CSS Minifier
- Paste your CSS into the box.
- Read the size saved and review the minified output.
- Copy the minified CSS into your build or stylesheet.
Frequently asked questions
Is minified CSS safe to use?
Yes. This minifier only removes comments and redundant whitespace and tightens punctuation; it doesn't rename classes or reorder rules, so behaviour is unchanged.
How much smaller will my CSS get?
Typically 10–30%, depending on how many comments and how much indentation the source has. The tool shows the exact percentage.
Should I keep an unminified copy?
Yes — keep your readable source for editing and minify as a build step. Minified CSS is hard to maintain by hand.