TontonTools

CSS Beautifier

Beautify CSS — expand minified styles into readable rules.

100% Free No signup Privacy-friendly Web Development
Updated Sep 2026
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How to use CSS Beautifier

  1. Paste the CSS — minified production styles or any messy stylesheet.
  2. Read the formatted output — one declaration per line, blocks indented.
  3. Find and edit what you came for — selectors and properties are now searchable and scannable.
  4. Re-minify for production — beautified is the editing form, not the shipping form.

What is CSS Beautifier?

A CSS beautifier expands compressed stylesheets into canonical readable form: each selector's block on its own lines, one declaration per line, consistent braces and spacing. Minified CSS — .card{margin:0 auto;padding:16px}.card h2{color:#333} — becomes a scannable rule list where finding and editing a property takes seconds.

Production CSS ships minified, so any inspection of a live site's real styles starts here. Generated CSS (from builders, exporters, or preprocessor output) arrives similarly unreadable — beautifying is the standard first step before understanding or salvaging it.

About the CSS Beautifier

Paste minified or messy CSS and get formatted output — rules separated, declarations lined up, nesting (media queries, supports blocks) indented.

What people beautify: a production site's stylesheet to learn how an effect is built (view-source → copy → beautify → search the class name), theme or plugin CSS before customizing it, old project styles written before the team had formatting standards, and email-template CSS assembled by tools that never heard of line breaks.

Editing minified CSS directly is a classic false economy — one missed brace in the wall of text breaks every rule after it, invisibly. Beautify, edit with structure visible, then minify again for shipping (the CSS Minifier reverses the round trip losslessly, minus comments the minifier already removed).

Frequently Asked Questions

No — only whitespace and line structure change; every selector, property and value survives byte-identically in meaning. Rendering is unaffected.
The rules yes, the comments no — minification deleted them permanently. Beautified output is structurally faithful but comment-free; the original source file remains the only complete record.
Better via DevTools (inspect the element — it names the matching rules), then beautify the stylesheet to read those rules in context. The two workflows complement each other.
The community standard: selector + opening brace on one line, each declaration indented on its own line, closing brace aligned left, blank line between rules — the shape linters like Stylelint expect.
Yes — @media, @supports and keyframe blocks indent their contained rules one extra level, making the query structure as visible as the rules inside it.

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