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Free CSS / JS Minifier & Beautifier Online

Minify CSS and JavaScript files to reduce file size and improve page load times. Beautify/format minified code for readability. See exact byte savings. — 100% free online utility, zero sign-up, zero paywalls, and private client-side processing.

100% Client-Side0ms Latency
Formatted & Validated OutputValid RFC 8259

How It Works

1

Paste CSS or JavaScript

Enter your CSS or JavaScript code.

2

Select File Type

Choose CSS or JavaScript mode.

3

Minify or Beautify

Click Minify to compress or Beautify to format for readability.

4

View Savings

See original vs compressed size and percentage reduction.

Frequently Asked Questions

CSS minification typically saves 15–30% of file size. JS minification with variable renaming can save 30–70%. Combined with gzip compression on the server, total savings can reach 70–90% of original.

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