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CSS Beautifier – Free Online Tool
Beautify, format and minify CSS. Configurable indent, sort properties, newline between rules and live mode. 100% private.
✅ Free 🎨 Format & Minify 🔑 Sort Props ⚡ Live 🔒 Private
⭐⭐⭐⭐⭐4.9 / 5(8,124 ratings)
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Beautify & Format
Adds consistent indentation and line breaks to minified or messy CSS for readability.
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Minify
Removes all whitespace to produce compact CSS for production.
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Sort Properties
Alphabetically sorts CSS properties within each rule for consistent, diff-friendly output.
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100% Private
All processing runs in your browser. Your CSS is never sent anywhere.
⭐ User Reviews
4.9
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Based on 8,124 verified reviews · 99% recommend this tool
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Live formatting as I type saves me from running Prettier just to preview a style tweak. Sort properties is brilliant for code reviews — same property order every time.
CSS Beautifier⭐⭐⭐⭐⭐
The minify feature cut my stylesheet from 22KB to 9KB — a 59% reduction. The rule and property count stats confirm everything was processed correctly before I deploy.
CSS Beautifier⭐⭐⭐⭐⭐
Pasting a third-party widget CSS to understand its structure. The beautifier makes it readable instantly. The newline-between-rules option keeps it compact but still clear.
CSS Beautifier⭐⭐⭐⭐⭐
Best free CSS formatter I have found. No ads, no login, no data sent to server. The 2/4/tab indent options match our project style guide exactly.
CSS Beautifier📖 How to Use
1
Paste CSS
Type or paste your CSS into the left input area. Live mode formats automatically as you type.
2
Choose Options
Set indent size (2/4 spaces or tab), toggle sort properties and newline-between-rules.
3
Beautify or Minify
Click Beautify for readable CSS or Minify for compact production output.
4
Copy or Download
Click Copy or Download .css to use the formatted result in your project.
❓ FAQ
What does a CSS beautifier do?+
A CSS beautifier (or formatter) takes compact, minified or inconsistently indented CSS and reformats it with proper indentation, spacing and line breaks to make it human-readable and maintainable.
How does CSS minification work?+
Minification removes comments, extra whitespace, newlines and the last semicolons before closing braces. It reduces file size which improves page load time — typically 40–70% size reduction for unoptimised CSS.
What does sort properties do?+
Sort properties alphabetically reorders the declarations within each CSS rule. This makes stylesheets easier to compare, diff and review because properties always appear in the same order regardless of how they were originally written.
Does it support SCSS or Less?+
This tool formats standard CSS. SCSS and Less have additional syntax (variables, nesting, mixins) that may format incorrectly. For SCSS/Less use a dedicated preprocessor tool or Prettier with the appropriate plugin.
Is my CSS private?+
Yes. All processing runs entirely in JavaScript in your browser. Your CSS is never sent to any external server or logged.
💡 Why Use This Tool?
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100% Private
All processing runs in your browser. Your code never leaves your machine.
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Instant Results
Format, validate or generate in milliseconds with no server round-trip.
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Copy & Download
Copy output to clipboard or download as a file with one click.
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Free & No Login
Completely free, unlimited use, no account required.