# Critical

> Use this skill when the user wants to extract critical CSS for above-the-fold content to improve page load performance.

- Skill: `javimosch/critical` (Agent Skill)
- Install (CLI): `npx skillmds@latest add javimosch/critical`
- Raw SKILL.md: https://api.skillmd.com/api/skills/javimosch/critical/raw
- Safety review: PASS (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Web & Frontend
- Author: javimosch (https://skillmd.com/u/javimosch)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/javimosch/critical

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# critical Plugin

critical extracts and inlines critical CSS.

## Usage Examples

- "extract critical CSS from a webpage"
- "inline critical CSS for performance"
- "generate critical CSS for mobile and desktop"

## Installation

```bash
npm install -g critical
```

## Key Features
- Above-the-fold CSS extraction
- Critical CSS inlining
- Responsive viewport support
- HTML/CSS optimization
- Page load performance improvement
- Multiple page batch processing