CSS Formatter & Beautifier
This free CSS formatter cleans up messy or minified stylesheets in one step
This free CSS formatter cleans up messy or minified stylesheets in one step
How to use CSS Formatter & Beautifier
- Paste your CSS into the input box.
- Choose Beautify with an indentation style, or choose Minify to compress.
- Copy the formatted result or download it as a .css file.
About CSS Formatter & Beautifier
This free CSS formatter cleans up messy or minified stylesheets in one step. Paste your CSS, choose Beautify to add consistent indentation, line breaks, and one-per-line declarations, or choose Minify to strip comments and whitespace and shrink the file. It correctly handles @media, @keyframes, and other at-rules, indents nested blocks by depth, and preserves meaningful spaces such as those inside calc() and quoted strings so your styles render identically. Everything runs locally in your browser, so proprietary or unpublished CSS is never uploaded, and you can copy the result or download it as a .css file. A stats panel reports input bytes, output bytes, and the percentage saved when minifying.
Frequently asked questions
- How do I beautify minified CSS?
- Paste your CSS into the input box, leave the Action set to Beautify, pick your indentation (2 spaces, 4 spaces, or a tab), and the formatted result appears instantly. Then click Copy result or Download .css.
- Does minifying change how my CSS behaves?
- No. Minify only removes comments and whitespace that browsers ignore. It deliberately keeps meaningful spaces, such as those inside calc(100% - 40px) and inside quoted strings, so your styles render identically.
- Is my CSS uploaded anywhere?
- No. The entire tool runs in your browser with JavaScript. Nothing is sent to a server, so you can safely format proprietary or unpublished stylesheets.
- Will it validate my CSS or catch errors?
- It is a formatter, not a linter. It reformats structurally valid CSS but does not check property names or values. Severely unbalanced braces can produce unexpected output, so fix obvious syntax problems first.
- Does it handle @media, @keyframes, and nested rules?
- Yes. At-rules and nested blocks are indented according to their nesting depth, and their preludes (like @media (max-width: 600px)) are kept on a single line.
- How much smaller will minifying make my file?
- It varies with how much whitespace and how many comments your file has. The stats panel shows the input bytes, output bytes, and the percentage saved so you can see the exact reduction.