CSS Formatter
Trending 🔥Format and minify CSS code
How to Use CSS Formatter
- 1Paste CSS in the input
- 2Click Format or Minify
- 3Copy the result
About CSS Formatter
CSS Formatter & Minifier beautifies and formats raw or minified CSS code with consistent indentation and property alignment, making it easy to read, debug, and maintain. Paste any CSS — from a single ruleset to an entire stylesheet — and get clean, well-structured output in seconds.
When CSS is compressed for production or copied from a browser DevTools panel, it loses all formatting. Beautifying it restores proper indentation and places each property on its own line. For production deployment, the minifier strips all whitespace, comments, and unnecessary characters.
All processing runs in your browser with no server required.
Key Features of CSS Formatter
- Beautify CSS with consistent indentation and property-per-line formatting
- Minify CSS by removing whitespace, comments, and redundant characters
- Handles media queries, pseudo-classes, and keyframe animations
- Preserves CSS custom properties (variables) and calc() expressions
- Works with plain CSS — complete stylesheets and individual rulesets
- Works entirely in-browser — no server uploads
- One-click copy for formatted or minified output
- Shows character count reduction achieved by minification
Examples
Beautify minified CSS from a production bundle
Format a compressed CSS file to understand its structure and find a specific rule.
Input
.btn{display:inline-block;padding:8px 16px;background:#007bff;color:#fff;border-radius:4px}Output
.btn {
display: inline-block;
padding: 8px 16px;
background: #007bff;
color: #fff;
border-radius: 4px;
}Minify a stylesheet for production deployment
Strip whitespace and comments from a development CSS file before deploying.
Input
Formatted CSS file with comments, ~80 lines
Output
Single-line minified CSS — ~40% size reduction before Gzip
Common Use Cases
- Formatting minified CSS files downloaded from a CDN for debugging
- Reading CSS copied from browser DevTools by reformatting it cleanly
- Minifying CSS stylesheets before deployment to reduce page load time
- Understanding third-party component CSS by beautifying their styles
- Preparing CSS snippets for documentation and technical blog posts
- Comparing formatted and minified CSS to identify whitespace-only differences
Troubleshooting
Minified CSS still looks large
Solution
CSS minification removes whitespace but not unused rules. For more aggressive reduction, consider a CSS purging tool like PurgeCSS.
Formatted output breaks multi-line values like box-shadow
Solution
Some CSS properties accept multi-value syntax. If output seems incorrect, compare with the original to see if value meaning changed.
SCSS or Less variables cause formatting errors
Solution
The tool handles standard CSS. Compile your preprocessor styles to CSS first, then format.
Frequently Asked Questions
Does it handle SCSS or Less?
The tool handles standard CSS. SCSS and Less syntax may not format correctly. Compile your preprocessor code to CSS first.
Will minifying CSS break my styles?
No. Minification only removes whitespace and comments — it does not change any property names, values, or selectors.
Does it support CSS custom properties (variables)?
Yes. CSS custom properties like --primary-color: #007bff and var(--primary-color) are treated as standard CSS.
Can I format a single CSS rule instead of a whole file?
Yes. Paste any CSS snippet — a single ruleset, a media query block, or an entire stylesheet.
How much does CSS minification reduce file size?
Whitespace removal typically reduces CSS files by 20–40%. Combined with Gzip, the total reduction is often 60–80%.
Are CSS comments removed during minification?
Yes. Standard CSS comments are removed during minification. License comments must be added back manually.
Is my code sent to a server?
No. All formatting and minification is performed locally in your browser.
Does it validate CSS syntax?
The formatter may produce incorrect output for syntactically invalid CSS but does not report specific errors. Use the W3C CSS Validation Service for detailed diagnostics.