CSS Beautifier Online — Free CSS Formatter & Pretty Printer

CSS Beautifier — Format & Indent CSS Online

Paste minified or messy CSS and get cleanly formatted output with proper indentation, spacing, and structure.

Last updated: April 13, 2026

CSS Input

Indent:

When to use a CSS beautifier

A CSS beautifier (also called a CSS formatter or pretty printer) adds whitespace and structure to compressed CSS. Common scenarios:

Debugging production CSS -- production stylesheets are minified for performance. Beautifying them makes it possible to read selectors, trace specificity issues, and find the rule you need to override.
Reviewing generated output -- CSS-in-JS tools, Tailwind builds, and preprocessors (Sass, Less) produce CSS that can be hard to read. Beautifying the output helps you verify what's actually being shipped.
Cleaning up messy code -- inherited codebases, copy-pasted snippets, and CSS from email builders often have inconsistent formatting. A formatter normalizes everything in one pass.
Code review preparation -- consistently formatted CSS is easier to diff and review. Run the beautifier before committing to remove formatting noise from your changes.

CSS beautifier vs CSS minifier

These two tools are inverses of each other:

Beautifier -- adds whitespace: indentation, line breaks after semicolons, spaces after colons. Makes CSS readable.
Minifier -- removes whitespace: strips comments, collapses newlines, shortens values. Makes CSS smaller.

Neither changes the functional meaning of your CSS. They only affect readability and file size.

What this formatter does

One declaration per line -- each property-value pair gets its own line for easy scanning.
Space after colons -- color: red not color:red.
Opening brace on same line -- .selector { follows the most common convention.
Missing semicolon recovery -- adds trailing semicolons when omitted before closing braces.
Comment and string preservation -- block comments and quoted strings are passed through unchanged.
Nested rule support -- @media, @supports, and CSS nesting are indented correctly.

Related formatting tools

CSS Minifier -- compress CSS by removing whitespace and comments.
HTML Beautifier -- format and indent HTML code.
JSON Formatter -- format, validate, and minify JSON.
JavaScript Minifier -- compress JavaScript with Terser.

Frequently Asked Questions

What does a CSS beautifier do?

It takes minified or poorly formatted CSS and adds consistent indentation, line breaks, and spacing to make it readable. One declaration per line, proper brace placement, and spaces after colons.

Does it fix missing semicolons?

Yes. If the last declaration before a closing brace is missing its semicolon, the beautifier adds it automatically.

Does it change how my CSS works?

No. Beautifying only adds whitespace and formatting. The CSS rules, selectors, and values remain functionally identical.

Does it handle media queries and nesting?

Yes. Nested rules like @media, @supports, and CSS nesting are indented at the correct depth.

What indent options are available?

You can choose between 2 spaces and 4 spaces indentation.

Is my data safe?

Yes. This tool runs entirely in your browser. Your CSS is never uploaded to any server.