About CSS Minifier & Beautifier
The CSS Minifier & Beautifier works in both directions: minify CSS to strip comments and whitespace before shipping to production, or beautify minified CSS into cleanly indented, readable rules for debugging and code review.
Minification reduces file size — often by 20–40% for hand-written stylesheets — which means faster page loads and better Core Web Vitals. Beautifying is the reverse: when you're handed a single-line production stylesheet, one click turns it back into something you can actually read.
Formatting is instant and entirely client-side, so proprietary stylesheets stay on your machine.
How to Use the CSS Minifier & Beautifier
- Choose Beautify or Minify mode.
- Paste your CSS into the input pane.
- Copy the formatted result from the output pane.
Features
- Two-way: minify for production, beautify for readability
- Strips comments and collapses whitespace when minifying
- Handles nested at-rules like @media
- Instant, client-side processing
Frequently Asked Questions
How much smaller does minified CSS get?
Typically 20–40% for hand-written CSS, depending on how many comments and how much whitespace it contains. Combined with gzip on your server, the delivered size drops further.
Does minifying change how my styles work?
No. Only comments and unnecessary whitespace are removed — selectors, properties and values are untouched, so the stylesheet behaves identically.
Is the CSS formatter free?
Yes, the CSS formatter is completely free with no usage limits. No signup, no account and no installation required.
Is my data safe?
Yes. All processing happens locally in your browser using JavaScript — nothing you type is uploaded or stored on our servers.
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