CSS Formatter
Format and beautify CSS code instantly.
CSS formatter workspace
Format CSS Code
Processed locally in your browser. Your code is never sent to a server.
Output
Formatted code will appear here.
Formatter ready.
What is a CSS Formatter?
A CSS Formatter turns minified or inconsistent CSS into readable stylesheets with consistent indentation and line wrapping. It is useful for reviewing selectors, custom properties, media queries, supports rules, layers, keyframes, and modern CSS syntax.
How It Works
Format CSS without uploading it
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Paste CSS
Add a rule block, stylesheet section, or full CSS file contents.
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Set formatting
Use More Options for indentation and line width only when needed.
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Format code
The browser formats the CSS with Prettier and shows the result.
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Copy or download
Copy the formatted CSS or download it as a .css file.
Features
Focused CSS beautifier
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Modern CSS support
Handles common selectors, at-rules, variables, and nested syntax supported by the parser.
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Minimal options
Keeps indentation and line width available without clutter.
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Readable code viewer
Displays syntax-highlighted CSS with line numbers.
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Browser-local processing
Your CSS is formatted locally and is not uploaded.
Frequently Asked Questions
Quick answers to common questions about using this tool.
Does the CSS Formatter upload my code? +
No. CSS formatting runs locally in your browser during normal use. The code is not sent to a formatter API or stored by PotatoTools.
Which CSS syntax is supported? +
The formatter uses Prettier CSS parsing, so it supports common selectors, comments, custom properties, media queries, supports rules, layers, keyframes, and parser-supported modern CSS.
Does it minify or optimize CSS? +
No. This tool is for readable formatting. Minifying, optimizing, and vendor prefix checks are separate workflows.
Why does malformed CSS sometimes still format? +
Prettier may tolerate some imperfect CSS and produce deterministic output. When it cannot parse the input, the tool shows a compact parser error.
Can I copy or download the formatted stylesheet? +
Yes. After formatting succeeds, you can copy the exact formatted CSS text or download it as a .css file.