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When you are building a website, chances are that you are using a css framework like Bootstrap, Materializecss, Foundation, etc... But you will only use a small set of the framework and a lot of unused css styles will be included.

This is where PurgeCSS comes into play. PurgeCSS analyzes your content and your css files. Then it matches the selectors used in your css files with the ones in your content files. It removes unused selectors from your css, resulting in smaller css files.

You can find the PurgeCSS documentation onthis website.

• Configuration
• Command Line Interface
• Programmatic API
• Safelisting
• Extractors
• Comparison

• PostCSS
• Webpack
• Gulp
• Grunt
• Gatsby

• Vue.js
• Nuxt.js
• React.js
• Next.js
• Razzle
• Hugo

npm install purgecss --save-dev

import{PurgeCSS}from"purgecss";constpurgeCSSResults=awaitnewPurgeCSS().purge({content:["**/*.html"],css:["**/*.css"],});

This repository is a monorepo that we manage usingLerna. That means that we actually publishseveral packages to npm from the same codebase, including:

Package	Version	Description
purgecss		The core of PurgeCSS
postcss-purgecss		PostCSS plugin for PurgeCSS
purgecss-webpack-plugin		Webpack plugin for PurgeCSS
gulp-purgecss		Gulp plugin for PurgeCSS
grunt-purgecss		Grunt plugin for PurgeCSS
rollup-plugin-purgecss		Rollup plugin for PurgeCSS
purgecss-from-html		Html extractor for PurgeCSS
purgecss-from-pug		Pug extractor for PurgeCSS
purgecss-with-wordpress		Collection of safelist items for WordPress
vue-cli-plugin-purgecss		Vue CLI Plugin for PurgeCSS