The formatter uses a syntax-aware scanner rather than splitting blindly on braces and semicolons. It tracks strings, comments, functions, attribute selectors and nested blocks, so punctuation inside a URL or quoted value stays untouched.
Free CSS Formatter
Runs entirely in your browser - no upload, no sign-up.
CSS input
Formatted CSS
Paste CSS to format it
What does a CSS formatter do?
A CSS formatter turns minified or inconsistently spaced stylesheets into readable code with predictable indentation and line breaks. Paste CSS, choose two spaces, four spaces or tabs, then copy or download the result. Formatting runs in your browser and preserves comments, quoted values, data URLs and declaration order.
How to use
- 1Paste your CSS. Add a stylesheet, selector block or minified CSS snippet to the input editor.
- 2Choose indentation. Select two spaces, four spaces or tabs. The formatted output updates live.
- 3Check the status. Review structural counts or fix the reported unmatched delimiter, unclosed comment or unclosed string.
- 4Copy or download. Copy the formatted CSS to your clipboard or save it as formatted.css.
Who it's for
- Front-end developers expanding production CSS into a form that is easier to inspect and debug.
- Code reviewers normalizing indentation before comparing a copied stylesheet or pull request snippet.
- Students making nested media queries, selectors and declaration blocks easier to follow.
- Support and QA teams cleaning browser-inspector CSS before adding it to a ticket or reproduction.
FAQ
Is the CSS formatter free?
Yes. You can format as much CSS as your browser can comfortably handle. There is no account, download requirement or usage quota, and the formatted result is available immediately.
Is my CSS uploaded to a server?
No. Formatting happens locally in your browser. The CSS you paste stays in the page editor and is not sent to a formatting API, which makes the tool suitable for private project styles.
How much CSS can I format?
The tool has no fixed character limit. Very large generated stylesheets still depend on your browser and device memory, but ordinary site, component and email stylesheets should format instantly.
Does formatting change how my CSS works?
The formatter changes whitespace and line breaks but keeps selectors, declarations, comments, quoted strings and their order. Review generated code before shipping it, especially when a stylesheet uses experimental syntax or unusual whitespace-sensitive escapes.
Does this tool validate CSS properties?
No. It checks structural balance for braces, brackets, parentheses, comments and strings. It does not verify whether every property, value or browser-specific feature is valid. Use a standards-aware CSS validator for semantic validation.
Can it format media queries and nested CSS?
Yes. Blocks inside media, supports, container, layer and keyframes at-rules are indented by depth. Modern nested selectors are also formatted as nested blocks while strings and function arguments remain intact.