What does CSS minification do?

It removes comments, extra whitespace, newlines, and unnecessary semicolons to reduce file size without changing functionality.

Will minified CSS work the same?

Yes. Minification only removes characters that browsers ignore. The styling behavior is identical.

No. Keep readable CSS during development. Minify only for production deployments to reduce load times.

Typically 20–50% depending on how verbose the original CSS is (comments, formatting, etc.).

Developer Tools

Minify CSS by removing comments, whitespace, and unnecessary characters. Reduce file size for faster page loads.

Input CSS

12 lines • 191 chars

Paste CSS, keep line numbers visible, and minify or copy the result without leaving fullscreen mode.

Quick examples

Minified CSS (27.7% smaller)

.card{padding:24px;border-radius:18px;background:white;box-shadow:0 8px 24px rgba(0,0,0,0.08)}.card__title{font-size:1.5rem;color:#1f2937}

Minification typically reduces CSS file size by 20–50%.
Always keep the original unminified CSS for development — minify only for production.
This is a basic minifier. For production builds, use tools like cssnano or your bundler's built-in minification.

What does CSS minification do?: It removes comments, extra whitespace, newlines, and unnecessary semicolons to reduce file size without changing functionality.
Will minified CSS work the same?: Yes. Minification only removes characters that browsers ignore. The styling behavior is identical.
Should I minify CSS for development?: No. Keep readable CSS during development. Minify only for production deployments to reduce load times.
How much size reduction should I expect?: Typically 20–50% depending on how verbose the original CSS is (comments, formatting, etc.).