Free Online CSS Formatter and Beautifier

Paste CSS and get clean, indented code instantly. Choose 2 space, 4 space or tab...

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Quick answer

A CSS formatter reformats compact or messy CSS into readable code: one declaration per line, the opening brace on the selector line, the closing brace on its own line, and a space after each colon. Paste your CSS here and it formats instantly in your browser. Choose 2 space, 4 space or tab indentation, optionally add a blank line between rules and lowercase hex colors, and it safely preserves strings, url() data URIs, calc() spacing and pseudo selectors. Copy or download the .css when done.

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CSS Formatter Features

One Declaration Per Line - Braces placed cleanly, a space after every colon and consistent indentation throughout.
2 / 4 / Tab Indent - Match your project style with two spaces, four spaces or real tab characters.
Safe Reformatting - Protects strings, url(), calc(), attribute selectors and pseudo selectors like a:hover.
Minify Toggle - Collapse the same CSS back into a compact production file with one click.
Optional Hex Lowercase - Normalize color values like #FFF to #fff without touching ID selectors.
Copy and Download - Copy to clipboard or save a ready-to-use .css file. Runs entirely in your browser.

Why Use Free Online CSS Formatter and Beautifier?

Readable in One Click

Paste minified or messy CSS and get one declaration per line, braces placed cleanly and consistent spacing, instantly and in your browser.

Your Indent, Your Style

Choose 2 spaces, 4 spaces or tabs, toggle a blank line between rules, and optionally lowercase hex colors to match your project's code style.

Safe by Design

A tokenizer protects strings, url() data URIs, calc() spacing and attribute selectors, so pseudo selectors like a:hover and :root are never mangled.

Format or Minify

Flip to Minify to collapse the same CSS back into a compact production file, then flip back to Format to expand it again for editing.

100% In Your Browser

Your CSS never leaves the page. All formatting runs client-side in JavaScript, so nothing is uploaded to a server and nothing is stored.

Copy or Download .css

One click to copy the formatted result to your clipboard or download it as a ready-to-use .css file for your project.

What People Use the CSS Formatter For

Inspect Minified CSS

Beautify a compressed vendor stylesheet so you can read it and understand which rules to override.

Cleaner Code Reviews

Format CSS consistently so diffs are small and reviewers see real changes, not whitespace noise.

Learning CSS

Expand compact CSS into readable structure to study how a rule block and its declarations fit together.

Fixing Pasted CSS

Clean up CSS copied from the browser dev tools or a snippet into tidy, consistent indentation.

How It Works

1

Paste Your CSS

Drop your stylesheet into the input box, or click Load sample to try it. The formatted output appears instantly as you type.

2

Choose Indent and Options

Pick 2 space, 4 space or tab indentation, decide whether to add a blank line between rules, and turn on lowercase hex colors if you want.

3

Copy or Download

Copy the clean CSS to your clipboard or download it as a .css file, then paste it straight into your stylesheet or code review.

Tips & Best Practices

Unminify to Read Vendor CSS

Paste a minified stylesheet in Format mode to expand it onto indented lines when you need to understand or override it.

Match Your Team's Indent

Set the indent to 2 spaces, 4 spaces or tabs so the formatted output drops into your codebase without churn in the diff.

Compile Preprocessors First

SCSS, LESS and Stylus are not CSS. Compile them to plain CSS first, then format that output here for the best results.

Frequently Asked Questions

Paste your CSS into the input box on this page. The tool formats it in your browser instantly, putting each declaration on its own indented line, placing the opening brace on the selector line and the closing brace on its own line, and adding a space after each colon. Pick 2 space, 4 space or tab indent, then click Copy or Download.
A CSS beautifier reformats compact or messy CSS into readable code. It adds line breaks and indentation so every property sits on its own line inside its rule block, normalizes spacing around colons, braces and commas, and can add a blank line between rules. The styles render exactly the same; only the whitespace changes.
No. A tokenizer pulls strings, url() and data URIs, calc() expressions, attribute selectors and comments out before reformatting, then restores them verbatim. So calc(100% - 10px) keeps its operator spaces, url(data:image/png;base64,...) stays byte for byte, and the text inside content: "..." is never altered.
Yes. Switch between 2 spaces, 4 spaces or tabs with one click. You can also toggle a blank line between top-level rules and optionally lowercase hex colors like #FFF to #fff in value position, while case-sensitive ID selectors are left untouched.
Paste the minified CSS and keep the default Format mode. The tool expands it back onto multiple indented lines so it is readable again, which is handy for inspecting or editing a compressed third-party stylesheet. Flip to Minify to compress it back.
No. Everything happens locally in your browser using JavaScript. Your CSS is never sent to or stored on any server, so it stays private even for proprietary or unreleased stylesheets. Close the tab and it is gone.
It formats standard CSS, which includes the compiled output of SCSS, LESS, Stylus and Tailwind. Compile your preprocessor to plain CSS first, then paste that here. Nested SCSS syntax that is not valid CSS may not indent as expected.

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