CSS Minifier

The CSS Minifier compresses stylesheets by stripping out comments, whitespace and redundant characters, and it reports the exact number of bytes saved so you can see the benefit at a glance. Minification typically trims between 20% and 40% from a file while leaving the styles the browser actually applies completely unchanged.

Front-end developers use it to shrink CSS for production so that pages download and render more quickly, which matters most on slower mobile connections. It is a genuine quick win when you want a smaller asset for a small site or a one-off page without setting up and configuring a full build pipeline just for that.

Minification runs entirely in your browser, so your stylesheet is never uploaded to a server. With nothing to install and no account, you can paste your CSS, minify it and copy the smaller output in a matter of seconds, ready to ship. Because the file is processed locally, even unreleased styles for a private project stay entirely on your own machine.