CSS Formatter — Beautify & Minify CSS Online
Beautify CSS with clean indentation or minify it to the smallest size. Paste your stylesheet, switch between beautify and minify, and copy the result — fully in your browser.
🔒 Runs entirely in your browser. Your input and output are never sent to a server or stored — fully private.
About this tool
Tidy up your CSS or shrink it, all in the browser. Beautify mode re-indents your styles with each rule and property on its own line so a stylesheet is easy to read and maintain, while minify mode strips out comments, line breaks and spare whitespace to produce the smallest possible file for production. Paste your CSS, choose a direction, and copy or download the result. Nothing is uploaded — your styles are processed entirely on your own device.
Frequently asked questions
What is the difference between beautify and minify?
They are opposites. Beautifying adds indentation, line breaks and spacing so a human can read and edit the stylesheet comfortably. Minifying removes everything browsers do not need — comments, line breaks and extra spaces — to make the file as small as possible, so it downloads faster on a live site. A common workflow is to write and keep beautified CSS, then minify a copy for deployment.
Will minifying remove my comments or break my styles?
Minifying does remove all comments and collapses whitespace, so do not minify the only copy you have — keep a readable source file and minify from it. Your styles themselves are not broken: selectors, properties and values are preserved exactly, and the tool does not rename classes or change the cascade. The result looks dense and unreadable, but the browser applies it identically.
Does my CSS get uploaded?
No. Beautifying and minifying both run entirely in your browser, so the CSS you paste stays on your device and is never sent to a server. You can use it on unreleased designs or internal stylesheets without worrying that the code leaves your machine.