Online CSS Minifier

Minify your CSS instantly with this fast and free online CSS minifier. Reduce file size, remove unnecessary characters, and speed up your website performance.

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What is a CSS Minifier?

A CSS minifier is a tool that compresses your CSS by removing unnecessary characters—spaces, line breaks, comments, and extra formatting—without changing how your styles work.

This results in smaller file sizes, faster page loading times, and better website performance. Minifying your CSS is one of the simplest ways to optimize front-end speed.

How to Use This Tool

  1. Paste your raw or unoptimized CSS into the left textarea.
  2. Click the “Minify” button.
  3. The page will refresh.
  4. Your minified CSS will appear in the right textarea.
  5. Copy the optimized CSS and use it on your website.