CSS Minifier
Remove comments, whitespace, and unnecessary characters from CSS to reduce file size.
How to Minify CSS
CSS minification removes every byte that browsers do not need: comments, extra whitespace, trailing semicolons, and unnecessary units. Paste your stylesheet into the input area, click Minify CSS, and the tool outputs a compact version along with original size, minified size, and percentage reduction. The result is ready to use in production or to paste into a build pipeline. This is particularly valuable for landing pages and performance-critical applications where every kilobyte affects load time and Core Web Vitals scores.
Benefits of CSS Minification
Smaller CSS files mean faster page renders. Browsers must download and parse all stylesheets before painting the page, so reducing CSS size directly improves First Contentful Paint and Largest Contentful Paint. Minification typically achieves 20 to 40 percent size reduction on well-commented stylesheets. Combined with gzip or Brotli compression on your server, the savings compound further. Use this tool for quick one-off minification, or integrate a build tool like cssnano for automated pipelines. All processing happens client-side — your stylesheets are never uploaded.