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CSS Minifier

Minify CSS by removing comments and unnecessary whitespace.

Processed locally — your code is never uploaded.

Understanding your result

Minified CSS is functionally identical but smaller. Keep an unminified copy for editing.

Formula and method

Comments are removed and runs of whitespace collapsed, while preserving the meaning of the styles.

Worked example

A commented, indented stylesheet typically shrinks by 20–50%.

How to use this tool

  1. Paste your CSS.
  2. Copy the minified output and the size saved.

Common mistakes to avoid

  • Minifying the only copy of your source — always keep the original.

About the CSS Minifier

Shrink your CSS by stripping comments and unnecessary whitespace so it downloads faster.

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Frequently asked questions

Is anything uploaded?

No. Minification happens entirely in your browser.