Free CSS Formatter
Turn minified or messy stylesheets into clean, readable CSS. This free formatter re-indents every rule and declaration, puts each property on its own line, keeps your comments intact, and gives you control over indentation — perfect before a code review or a debugging session.
Formatted CSS
How to Use the CSS Formatter
- Paste your CSS — minified, messy, or half-formatted.
- Choose your indentation: 2 spaces, 4 spaces, or tabs.
- Click Format CSS to beautify it instantly.
- Copy the result or download it as a .css file.
Features
The formatter parses braces, semicolons, and strings correctly, so data URIs and quoted content with special characters are never mangled. Each declaration lands on its own indented line, nested at-rules like @media are indented as blocks, and /* comments */ are preserved in place. A stats line reports rules, declarations, and size so you can see exactly what changed.
Benefits & Use Cases
Developers beautify production CSS pulled from DevTools before debugging specificity issues; teams normalize third-party stylesheets to house style before committing them; students read real-world CSS comfortably instead of squinting at one-line files. Running locally means proprietary stylesheets stay on your machine.
Tips
Format before diffing: comparing a minified file against a formatted one produces noise, so beautify both sides first. If you maintain a style guide, pair this formatter with the CSS minifier — format for humans, minify for production, all in one workflow.
Frequently Asked Questions
What does a CSS formatter do?
It takes compact or inconsistently styled CSS and rewrites it with consistent indentation, one declaration per line, and clean spacing around braces and colons — making the stylesheet easy to read and edit.
Will it break my CSS or change how it looks?
No. Formatting only changes whitespace and line breaks, never selectors, values, or order. The rendered result is identical; only readability changes.
Are my comments preserved?
Yes. Block comments are kept in place, attached to the rule or declaration they precede, so your notes and section headers survive formatting.
Can it validate CSS or find errors?
It focuses on formatting, but unbalanced braces usually surface as oddly indented output — a quick visual cue that something is off. For strict validation, use a dedicated CSS validator.
Is there a size limit?
The tool handles typical stylesheets of several hundred kilobytes instantly in the browser. Multi-megabyte generated files may take a moment but still process locally.
Is my stylesheet uploaded anywhere?
No. All formatting happens in your browser with JavaScript — your CSS never leaves your device.
Related Tools
CSS Minifier
Minify CSS for production with NToolHub’s free minifier. Strips comments and whitespace safely — see byte savings instantly, 100% private.
Open tool →HTML Formatter
Beautify messy HTML instantly with NToolHub’s free formatter. Clean indentation, readable markup, safe for inline code — 100% private.
Open tool →JavaScript Formatter
Beautify minified JavaScript with NToolHub’s free formatter. Smart brace indentation, string-safe — readable code instantly, 100% private.
Open tool →Border Radius Generator
Set each corner with sliders and copy the CSS border-radius code instantly. Free border radius generator with live preview — no sign-up needed.
Open tool →Box Shadow Generator
Create soft, realistic CSS box shadows with sliders and copy the code. Free box shadow generator for web designers — no sign-up required.
Open tool →