CSS Minifier
Minify CSS to reduce file size and speed up your pages.
What CSS minification does
Minifying CSS removes comments, line breaks, extra spaces and the last semicolon in each rule, without changing how the page looks. A 100 KB stylesheet often becomes 70 KB or smaller, so pages download faster, which helps both visitors on slow mobile networks and Core Web Vitals scores.
How to use
- Paste your CSS into the input box.
- Click Minify and check the size saved.
- Copy the result into your .min.css file or your theme.
Good practice
- Always keep the original, readable file. Edit that one and minify again when you publish.
- Test the page after replacing the file, especially if your CSS has unusual hacks or custom properties.
- Enable gzip or Brotli on your server as well; compression and minification together give the best saving.
Minifying does not rename classes or change behaviour. It is safe for normal stylesheets, but this simple tool does not merge or reorder rules like a full build system would.
Further reading from trusted sources
About This Tool
Minify CSS to reduce file size and speed up your pages.
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