CSS Minifier
Minify and compress your CSS code by removing comments, whitespace, and unnecessary characters. Reduce file size for faster page loading.
How to Use the CSS Minifier
- Paste your CSS code into the input textarea.
- Click Minify CSS to process the code.
- View the compression stats showing original size, minified size, and percentage saved.
- Click Copy to copy the minified CSS to your clipboard, or Download to save it as a .css file.
About CSS Minification
CSS minification is a key optimization technique for web performance. When browsers request CSS files, every byte matters. Minification removes all characters that are not necessary for the browser to interpret the styles correctly: comments that document the code, whitespace and indentation that make it human-readable, trailing semicolons before closing braces, and redundant formatting.
The result is a compressed CSS file that is functionally identical to the original but significantly smaller. This reduces bandwidth usage, decreases page load times, and improves Core Web Vitals scores. For production websites, minifying CSS (along with HTML and JavaScript) is considered a standard best practice. Most build tools and CI/CD pipelines include CSS minification as part of the deployment process.
Frequently Asked Questions
CSS minification is the process of removing unnecessary characters from CSS code without changing its functionality. This includes removing comments, whitespace, newlines, and redundant semicolons. Minified CSS loads faster because there is less data to transfer.
Typically, CSS minification reduces file size by 15-30% for well-formatted code. Files with many comments or excessive formatting may see even greater reductions. The exact savings depend on the original code style.
No. Minification only removes characters that have no effect on how CSS is interpreted by browsers. The visual output remains identical. Always keep an un-minified version for development and use the minified version for production.