CSS Minifier
Minify CSS code instantly. Remove whitespace, comments, and redundant rules to reduce file size. Free online CSS minifier, 100% client-side.
Frequently Asked Questions
What does CSS minification do?
CSS minification removes all unnecessary characters from your stylesheet without changing its functionality. This includes whitespace, line breaks, comments, and redundant semicolons. The result is a smaller file that browsers parse identically to the original.
How much file size can CSS minification save?
Typical savings range from 10% to 30% of the original file size, depending on coding style. Stylesheets with extensive comments and generous formatting see the largest reductions. Combined with gzip compression, total transfer size can drop by 80% or more.
Is it safe to minify CSS?
Yes. Minification only removes characters that have no effect on how browsers interpret the stylesheet. It does not alter selectors, property values, or the cascade order. Always keep your original source files and serve the minified version in production.
What is the difference between CSS minification and uglification?
Minification removes whitespace and comments. Uglification is a JavaScript-specific term that also shortens variable and function names. Since CSS selectors must match the HTML, renaming them would break styling, so CSS tools only perform minification, not uglification.
Is this tool free?
Yes. All KappaKit tools are free, run in your browser, and require no signup or account.