CSS Minifier & Beautifier
Compress CSS to reduce file size, or format messy CSS into clean readable code.
How to Minify & Beautify CSS
CSS minification removes whitespace, comments, and redundant code from your stylesheets without changing how they work. Smaller CSS files load faster, reducing page render time — especially important on mobile connections.
The beautify mode does the opposite: it formats compressed or hand-written CSS into clean, readable code with consistent indentation. Powered by the industry-standard js-beautify library for reliable formatting results.
Everything runs entirely in your browser. Your CSS is never sent to any server, stored, or logged. Works with any CSS including media queries, animations, and CSS variables.
FAQ
What is CSS minification?
Minification removes unnecessary whitespace, comments, and redundant code from CSS files to reduce file size and improve page load speed.
Does minification change how my CSS works?
No. Minified CSS is functionally identical to the original — only whitespace and comments are removed. The visual output remains exactly the same.
How much can I reduce my CSS file size?
Typical savings range from 20–40% for hand-written CSS and up to 60% for heavily commented or formatted stylesheets.
Can I beautify minified CSS?
Yes. Switch to Beautify mode to expand minified CSS into readable, properly indented code using the industry-standard js-beautify library.
Is my CSS stored or logged anywhere?
No. All processing happens entirely in your browser. Your CSS is never uploaded, stored, or shared with any server.