CSS Minifier — Remove Whitespace from CSS Online
CSS Minifier compresses your CSS by stripping comments, collapsing whitespace, and removing trailing semicolons before closing braces. Reduces CSS file size for faster page loads.
Common Use Cases
- Minifying CSS for production web applications
- Reducing stylesheet payload size for mobile networks
Frequently Asked Questions
Does minifying CSS break anything?
No. CSS minification only removes insignificant whitespace and comments. The styles remain functionally identical.
Privacy & Security
This tool runs entirely in your browser using client-side JavaScript. No data is sent to a server — your input never leaves your machine. SmartDevBox has no account system, no usage tracking, and no paid tier. See the Privacy & Security page for full details.
Related Tools
- CSS FormatterFormat and beautify CSS stylesheets with consistent indentation. Powered by Prettier. Free, no sign-up, 100% client-side.
- JavaScript MinifierMinify JavaScript by removing comments and whitespace. Free, no sign-up, 100% client-side.