CSS Minifier
Minify and prettify CSS online for cleaner output and faster front-end delivery.
About This Tool
This free online CSS minifier helps you reduce stylesheet size by removing comments, extra spaces, and redundant tokens. It improves transfer size for production while preserving CSS behavior. For debugging, advanced mode can prettify compressed CSS back into readable lines so teams can review selectors and properties quickly.
All formatting runs locally in your browser with no login and no server-side content storage. Use this tool for quick optimization during frontend builds, design system updates, and static-site publishing workflows.