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CSS Minifier

Shrink stylesheets for production and compare output instantly.

JSON Formatter
CSS Minifier
Processed entirely in your browser. No uploads, no background processing, and no account required.
Ctrl+Enter Minify Ctrl+Shift+Enter Beautify Ctrl+Shift+C Copy
CSS input Editable input
1 line | 0 chars | 0.0 KB
Minified or beautified CSS Read only output
1 line | 0 chars | 0.0 KB
Ready Browser only
Paste content into the input editor and run an action.
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CSS Minifier

CSS often grows noisy during day-to-day work because local debugging favors readability, comments, and spacious indentation. Before that stylesheet goes into production, you usually want the inverse: fewer bytes, less whitespace, and a cleaner transfer size without changing what the browser renders.

This page keeps that workflow in the browser. You can paste a stylesheet, minify it instantly, or run the reverse pass to expand compressed CSS back into a more reviewable structure when you are debugging minified assets.

How to Use the CSS Minifier

  1. Paste CSS into the left editor.
  2. Use Minify to remove comments and extra whitespace.
  3. Use Beautify when you need to expand dense CSS back into a readable block format.
  4. Copy or download the result for deployment or debugging.

CSS Minifier Examples

Before 
/* button styles */
.btn-primary {
  color: white;
  background: #0f766e;
  padding: 12px 18px;
}
After 
.btn-primary{color:white;background:#0f766e;padding:12px 18px}

Frequently Asked Questions

  • Does this CSS minifier upload my stylesheet?

    No. The minifying and beautifying logic runs entirely in your browser.

  • Can I use it to inspect minified vendor CSS?

    Yes. The Beautify action expands compressed CSS into a more readable layout.

  • Will it change my selectors or values?

    It removes comments and normalizes whitespace, but it does not intentionally rewrite selectors or declarations.

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