CSS Beautifier
Paste minified or unformatted CSS to reformat it with one declaration per line and tidy indentation. Everything runs in your browser, so your styles are never uploaded.
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About the CSS Beautifier
This tool reformats minified or untidy CSS into clean, readable rules using js-beautify. It puts each declaration on its own line, indents the contents of every selector block, and adds consistent spacing after colons and around braces. The result is stylesheet code that is easy to scan, diff, and edit, whether it came from a build output or a copy-paste from the web.
How to use it
- Paste minified or messy CSS into the input.
- The beautifier expands it into one declaration per line.
- Read through the indented selector blocks.
- Copy the formatted stylesheet back into your project.
A typical use is unpacking a minified style.css so you can find and tweak a specific rule. Beautifying changes only formatting - it does not merge duplicate selectors, remove unused rules, or add vendor prefixes, so the cascade and specificity stay exactly as written. Everything runs in your browser, so your styles are never uploaded.
Frequently asked questions
Does the CSS beautifier change how my styles render?
No. It only adds whitespace, line breaks, and indentation. The selectors, properties, and values are unchanged, so the cascade and the rendered result stay identical.
Does it merge or remove duplicate rules?
No. It is a formatter, not an optimizer. Duplicate selectors and redundant declarations are kept as-is so nothing in your stylesheet is silently altered.
Can it handle modern CSS like custom properties and media queries?
Yes. Built on js-beautify, it correctly indents nested at-rules such as media queries and keeps custom properties (CSS variables) intact.
Is my CSS sent to a server?
No. Formatting happens locally in your browser, so your stylesheet is never uploaded.