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CSS Formatter & Minifier — Free Online CSS Beautifier Tool

Beautify or minify CSS rules instantly in your browser. Free, no signup, no upload.

Free No signup Client-side Privacy friendly Updated

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How to use

  1. 1 Paste your CSS.
  2. 2 Pick Beautify for readable indented output, or Minify to strip whitespace and comments.
  3. 3 Copy or download the result.

Why use this tool

  • Powered by js-beautify.
  • Both directions — beautify minified CSS or minify formatted CSS.
  • Pure client-side, no upload.
  • Selector-per-line beautify mode produces git-diff-friendly output.

Frequently asked questions

Does this work for SCSS / SASS / LESS?

Plain CSS only. Preprocessor syntax (nesting, @mixin) is not understood — compile to CSS first.

Will it preserve CSS variables and @media queries?

Yes — custom properties, media queries, container queries, and at-rules are preserved.

How aggressive is minify mode?

Strips all comments, collapses whitespace, removes the last "}"-preceding semicolon. Safe transformations only — does not rename selectors or collapse shorthand.

What is CSS Formatter & Minifier?

A CSS Formatter is a tool that beautifies or minifies CSS rules. The beautify mode re-indents selectors, properties, and declarations into a clean, readable structure, while the minify mode removes whitespace and breaks to shrink stylesheet size. It runs entirely in the browser with no signup and no upload, processing the CSS locally on the device.

How CSS Formatter & Minifier compares to alternatives

CSS Formatter & Minifier versus typical browser and desktop alternatives — features compared at a glance.
Feature Zerethon Tools Typical online tools Desktop apps
Signup required No Sometimes No (IDEs)
CSS leaves device No Yes No
Beautify + minify Both Sometimes Both
Free Yes Yes (with ads) Often paid
Works offline Yes (after load) No Yes
Summary

CSS Formatter & Minifier is a free 開発者 utility by Zerethon Tools. Beautify or minify CSS rules instantly in your browser. Free, no signup, no upload. Runs entirely in the browser — no signup, no upload.

Category
開発者
Pricing
Free
Privacy
Browser-based
Signup
Not required

Privacy

Your data never leaves your browser unless explicitly stated. CSS Formatter & Minifier runs entirely client-side — no server upload, no logging, no tracking of your input.

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