clean-css-loader

A webpack loader that minifies CSS using CleanCSS. Current stable version is 4.2.1 (released February 2023), with maintenance-level updates. It supports webpack 2+ and works with schema-utils v3/v4, loader-utils v1-v3. Key differentiators: minimal configuration, supports CleanCSS level 2 optimizations, source maps, and inline import options. Competing loaders like css-minimizer-webpack-plugin are more modern but this loader is simpler for basic minification. Ships TypeScript types.