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    CSS Beautifier / Formatter

    Format and beautify minified or messy CSS into clean, readable code with proper indentation.

    Free to use. Runs in your browser.

    Paste minified CSS and click Beautify to format it with consistent indentation, spacing, and line breaks. Works entirely in your browser, no upload needed.

    When You Need Readable CSS

    Minified CSS is great for production but impossible to work with. A single line containing hundreds of rules, no indentation, no comments, it's unreadable. A CSS beautifier reverses this, adding proper structure so you can see selectors, properties, and nesting at a glance.

    You'll reach for a beautifier when inspecting third-party stylesheets, debugging production CSS from DevTools, reviewing auto-generated styles, or cleaning up codebases with inconsistent formatting. Everything runs in your browser.

    Before and After

    Minified (1 line)

    .header{display:flex;align-items:center;padding:1rem 2rem;background:#1a1a2e;color:#fff}.header h1{font-size:1.5rem;margin:0}

    Beautified (readable)

    .header {
  display: flex;
  align-items: center;
  padding: 1rem 2rem;
  background: #1a1a2e;
  color: #fff;
}

.header h1 {
  font-size: 1.5rem;
  margin: 0;
}

    Same CSS, same rendering. The beautified version just lets you actually read and edit it.

    Beautifier vs Formatter vs Linter

    ToolWhat It DoesChanges Behaviour?When to Use
    BeautifierAdds whitespace, indentation, line breaksNo, cosmetic onlyQuick one-off formatting
    Formatter (Prettier)Enforces consistent style rulesNo, cosmetic onlyProject-wide consistency
    Linter (Stylelint)Catches errors and bad patternsMay suggest changesCode quality enforcement

    CSS Organisation Best Practices

    Property ordering

    Most teams order by type: layout (display, position, flex), box model (margin, padding, border), typography (font, color), then visual (background, shadow). Consistency matters more than the specific order.

    Selector specificity

    Formatted CSS makes specificity visible. If you see three nested selectors deep, that's a code smell. BEM naming (.block__element--modifier) keeps specificity low.

    File structure

    Organise: reset first, then base styles, components, utilities, overrides. Each section separated by comments. If a file is too long to navigate, split it.

    Use automated tools for projects

    For ongoing work, use Prettier with CSS support for formatting on save. This online tool is for quick one-off formatting when you don't have your IDE handy.

    Related Tools

    CSS Minifier

    Minify CSS for production

    CSS Gradient Generator

    Generate gradient CSS visually

    CSS Box Shadow Generator

    Design shadows visually

    JS Beautifier

    Format JavaScript code

    HTML Beautifier

    Format HTML markup

    Colour Converter

    Convert CSS colour values

    How to use this tool

    1

    Choose your preferred indent style (2 spaces, 4 spaces, or tabs)

    2

    Paste minified or messy CSS into the input area

    3

    Click Beautify CSS and copy the formatted result

    Common uses

    • Reformatting minified CSS for debugging
    • Cleaning up auto-generated CSS from tools
    • Making inherited CSS codebases readable
    • Reviewing third-party stylesheets

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    Frequently Asked Questions

    What does CSS beautifying do?
    It reformats minified or messy CSS into a clean, readable format with proper indentation, line breaks, and spacing.
    Does this change my CSS behaviour?
    No, it only changes formatting (whitespace & indentation). The CSS output is functionally identical.
    What indent options are available?
    2 spaces, 4 spaces, or tabs.
    Is my CSS sent anywhere?
    No. All formatting happens locally in your browser using JavaScript. Nothing is uploaded, stored, or transmitted to any server.
    Does this work with CSS-in-JS, SCSS, or LESS?
    It's designed for plain CSS. It will reformat SCSS or LESS that happens to be valid CSS-like syntax, but it won't expand nested selectors, variables, or mixins. For those, use a full SCSS/LESS compiler.
    Can I beautify CSS inside an HTML <style> tag?
    Yes, copy the CSS between the opening and closing <style> tags, paste it here, beautify it, and paste the result back. The tool works on any valid CSS, regardless of where it was originally embedded.

    Results are for general informational purposes only and should be checked before use. They are not professional advice. See our Disclaimer and Terms of Service.