uncss

Use this skill when the user wants to remove unused CSS from stylesheets by analyzing the actual HTML or templates used in their project.

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Repository: javimosch/supercli
Last source activity: May 22, 2026 at 22:15
Detected SKILL.md language: English
Stars: 51
Forks: 7

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name	uncss
description	Use this skill when the user wants to remove unused CSS from stylesheets by analyzing the actual HTML or templates used in their project.

UnCSS Plugin

UnCSS removes unused CSS rules by scanning HTML/JS templates against stylesheets.

Usage Examples

"remove unused CSS from styles.css based on index.html"
"purge unused CSS across multiple HTML pages"
"generate a lean CSS file for production"
"analyze CSS coverage across templates"

Installation

npm install -g uncss

Key Features

Unused CSS rule removal
HTML/JS template scanning
Multiple page/file support
PhantomJS and Puppeteer backends
CSS file size reduction
Production-ready lean CSS generation
Media query preservation
Ignored selector configuration