Data as of Jul 25, 2026 · Based on 2,718,867 AI responses across 9,511 prompts · See how Parse measures this
PurifyCSS is a function that analyzes HTML, JavaScript, PHP, and other content files to detect which CSS selectors are actually used, then removes all unused CSS rules. It can reduce file sizes significantly, especially for CSS frameworks like Bootstrap, and supports standalone usage, build tools (Grunt, Gulp, Webpack), and CLI commands.
Parse Score