CSS Minifier — Free Online Tool

Minify CSS by removing whitespace, comments, and unnecessary characters to reduce file size. CSS Minifier is a free online tool from the ToolsRift Code Formatters collection. It runs entirely in your browser — nothing to install, no signup, and your data never leaves your device.

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How to use CSS Minifier

  1. Open the CSS Minifier above — it loads instantly, no account needed.
  2. Enter or upload your input. Everything is processed locally on your device.
  3. Get your result immediately and copy or download it with one click.

Frequently asked questions

What does CSS minification remove?

Minification removes whitespace, line breaks, comments, and can shorten color codes (like #ffffff to #fff) to create the smallest valid CSS.

How much can I reduce file size?

Typical reduction is 20-40% depending on formatting style. CSS with lots of comments and indentation compresses more significantly.

Should I minify CSS for production?

Yes, minified CSS loads faster. Most build tools automatically minify CSS. This tool is useful for manual optimization or testing.

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