About the CSS minifier
Smaller stylesheets for production
Minification removes comments and redundant whitespace, and can rewrite values where safe. Smaller CSS improves download time and parse cost on constrained devices.
Ship minified assets to users while keeping readable source maps and originals in version control for debugging.
What minifiers do not fix
Dead rule elimination and deduplication are separate optimizations. A minifier will not automatically redesign your cascade or remove unused frameworks unless paired with other tooling.
Test responsive breakpoints after minification when you rely on fragile comment hacks—most minifiers strip comments by default.
Deployment hygiene
Set long cache lifetimes on hashed filenames and invalidate through filenames rather than manual purges when possible.
Document which build step owns minification so developers do not accidentally double-minify or lose source maps.