CSS Formatter & Beautifier
Beautify and minify CSS online — fix indentation, spacing and line breaks, or compress to one line. Fast, private, in-browser.
About the CSS Formatter & Beautifier
This CSS formatter cleans up messy stylesheets into consistently indented, readable code. It re-indents nested rules, puts one declaration per line, normalises spacing around braces, colons and semicolons, and handles at-rules like @media and @keyframes with proper nesting — so minified or hand-mangled CSS becomes easy to read again.
A minify mode does the opposite, stripping comments and whitespace to produce the smallest one-line output for production. Both directions preserve the exact meaning of your styles; only formatting changes.
Everything runs locally in your browser, so it's a fast, private way to tidy CSS pasted from a build output, a CMS field or a colleague, without sending your code to a server.
How to Use the CSS Formatter & Beautifier
- 1Paste your CSS into the input box.
- 2Choose an indentation size, then click Format to beautify.
- 3Or click Minify to compress the CSS to one line.
- 4Copy the result or download it as a .css file.
Frequently Asked Questions
What does formatting CSS actually change?
Only whitespace and layout — indentation, line breaks and spacing around braces, colons and semicolons. Selectors, properties and values are untouched, so the styles behave identically. Formatting makes CSS readable; it never changes what the browser renders.
Does the formatter handle media queries and keyframes?
Yes. Nested at-rules like @media, @supports and @keyframes are indented one level deeper so their inner rules are clearly grouped. The formatter tracks brace depth, so arbitrarily nested blocks come out correctly aligned.
Will formatting break my CSS?
No. The tool only reflows whitespace between tokens and never rewrites values, so the output is functionally identical to the input. As a safe habit, keep your original in version control and format a copy.
What's the difference between beautifying and minifying?
Beautifying adds indentation and line breaks for humans to read and edit. Minifying removes every optional space, newline and comment to shrink the file for production, where smaller CSS loads faster. This tool does both from the same input.
Is my CSS uploaded anywhere?
No. Formatting and minifying happen entirely in JavaScript in your browser. Nothing is sent to a server, so it's safe for proprietary stylesheets and works offline once the page has loaded.