Free CSS Minifier

CSS files tend to accumulate whitespace, comments, and formatting that is great for readability during development but unnecessary in production. This tool strips all of that out, giving you a minified version that is functionally identical but significantly smaller in file size. The minification process removes multi-line comments, collapses consecutive whitespace into single spaces, strips unnecessary spaces around CSS selectors and properties, and removes trailing semicolons before closing braces. The result is a single-line CSS output that browsers parse just as efficiently - often faster, since there is less data to download and process. For small stylesheets, the size difference might not seem dramatic. But for larger projects with thousands of lines of CSS, minification can cut file size by 20-40%, which directly impacts page load times and bandwidth costs. If you are also using gzip compression on your server, minified CSS compresses even better. Paste your CSS, copy or download the result, and drop it into your production build. All processing happens in your browser - your stylesheets are never uploaded anywhere.