CSS Compressor & Minifier

Use this free online CSS Compressor and CSS Minifier to minify CSS, reduce stylesheet size and make your website faster to download. Paste your CSS code, choose one of four compression levels and optimize CSS 1, CSS 2, CSS 2.1 or CSS 3 in seconds.

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Free Online CSS Minifier and CSS Compressor

A CSS minifier removes or rewrites characters that are not needed by the browser, helping you compress CSS and reduce the number of bytes transferred to visitors. CssCompressor.net is designed for developers who want to minify CSS online without installing a build tool. It can optimize whitespace, colors, font weights, shorthand declarations, unnecessary backslashes and trailing semicolons, depending on the options you select.

How to minify CSS online

  1. Paste your stylesheet into the CSS source box.
  2. Choose a compression level or open the advanced options.
  3. Click Compress CSS, then copy the minified CSS output.

Why compress CSS?

CSS is normally written with spaces, indentation and descriptive formatting so people can read and maintain it. Browsers do not need most of that formatting. A smaller stylesheet can download faster and use less bandwidth, which is useful when preparing CSS for production. Keep your original readable source file for future editing and test the compressed result on your site.

CSS Minifier vs CSS Compressor

CSS minifier, CSS compressor, CSS optimizer, “minify CSS” and “compress CSS” are commonly used for the same goal: make CSS code more compact while preserving the stylesheet behavior. This tool gives you four levels so you can choose between maximum compression and easier-to-read output.