Purgecss
Easily remove unused CSS
In plain words
PurgeCSS is a tool that removes unused CSS selectors from stylesheets, reducing file size. It's designed for developers building websites with CSS frameworks like Bootstrap or Tailwind CSS, where entire frameworks are often included despite only partial usage. The tool analyzes code to identify which styles are actually used and strips out the rest, resulting in significantly smaller CSS files suitable for production deployment.
written from the facts on this page · September 2026
From the sources
When you are building a website with a css framework like Bootstrap, you will only use a part of the framework and unused css styles will be included. Purgecss removes unused selectors from your css, resulting in smaller files. "With PurgeCSS, you'll have a hard time generating CSS that isn't under 10kb minified and gzipped." - Tailwindcss docs
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