CSS Minifier

Whitespace, comments, unnecessary semicolons, trailing zeros, and redundant units. It can also merge identical rules and shorten hex colors (#ffffff ? #fff).

No. The minifier preserves all selectors, properties, and values. The output is functionally identical - just smaller. If you encounter an issue, the original CSS is always available on the left.

It removes whitespace, comments, unnecessary semicolons, trailing zeros, and redundant units. It also shortens hex color values (#ffffff to #fff) and can merge identical adjacent rules when safe to do so.

No. The minifier preserves all selectors, properties, declaration order, and values exactly. The output is functionally identical to the input — just smaller. Specificity and cascade behavior remain unchanged.

No. Minification is a production optimization. In development, use unminified CSS with source maps for easier debugging. Minify as part of your build process using tools like PostCSS, webpack, or your deployment pipeline.

Typical savings range from 15�40% depending on how well-formatted your source is. Heavily commented stylesheets benefit the most. The stats bar shows exact savings after each minification.