Paste your stylesheet into a browser-based CSS minifier and it strips comments, whitespace and line breaks to produce the smallest equivalent CSS. It runs on your device, so nothing is uploaded, and the smaller file means fewer bytes for browsers to download before they can render your page.
Free CSS minifier. Strip comments, whitespace and newlines to shrink stylesheets for faster page loads. Shows how many bytes you saved. Runs in your browser.
Open CSS Minifier → Free toolFree CSS formatter and beautifier. Expand minified CSS into clean, indented rules with one declaration per line so stylesheets are easy to read and edit.
Open CSS Formatter →A stylesheet blocks rendering until it downloads, so its size directly affects how quickly a page appears. Minifying removes the comments, indentation and spare newlines that help you write CSS but mean nothing to the browser, often shrinking the file noticeably. Combined with gzip or brotli compression on the server, minified CSS is a simple, safe win for load time.
Minified CSS is painful to edit, so the sensible workflow is to keep your commented, indented stylesheet as the source and minify a copy for production. When you need to read a minified file someone else shipped, a formatter reverses the process and re-indents it. Both run in your browser, so proprietary styles are never sent to a server.
No. It removes only comments and whitespace that do not affect rendering, so the styles behave identically.
No. Minification happens entirely in your browser.
Yes. A CSS formatter re-indents minified CSS back into a readable layout.