Minify CSS
Paste your CSS code to remove whitespace, comments, and unnecessary characters for smaller file sizes and faster loading.
What is Minify CSS?
CSS minification is the process of removing all unnecessary characters from your CSS code — including whitespace, line breaks, comments, and redundant formatting — without changing its functionality. This reduces file size, decreases download time, and improves overall page performance.
How to Fix It
Use this tool to minify your CSS and follow best practices for file size reduction.
Best Practices
- Always keep an unminified version of your CSS for development and debugging.
- Automate minification as part of your build pipeline (e.g., with PostCSS or cssnano).
- Combine CSS minification with gzip/brotli compression for maximum savings.
- Remove unused CSS rules before minifying for even greater file size reduction.
- Use shorthand CSS properties (e.g., margin, padding, background) to reduce code volume.
- Test your minified CSS thoroughly to ensure no visual regressions appear.