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check-performance

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Spot performance issues on web pages.

Software Engineering#performance#HTML#analyze#Core Web Vitals#web#URL#render-blocking
Authorleobrival
Version1.0.0
Installs0

System Documentation

What problem does it solve?

This Skill identifies performance issues on web pages, including render-blocking resources, missing resource hints, and opportunities to improve Core Web Vitals.

Core Features & Use Cases

  • Analyze HTML patterns to detect render-blocking CSS/JS, oversized inline resources, missing preloads, and absent image dimensions.
  • Provide actionable optimization suggestions suitable for single pages or site-wide audits.
  • Use Case: Audit a landing page to reduce LCP/CLS by adding preloads, deferring non-critical scripts, and optimizing images.

Quick Start

cd /path/to/html-checker/scripts bun src/check-performance.ts <URL>

Dependency Matrix

Required Modules

None required

Components

scripts

💻 Claude Code Installation

Recommended: Let Claude install automatically. Simply copy and paste the text below to Claude Code.

Please help me install this Skill:
Name: check-performance
Download link: https://github.com/leobrival/serum-plugins-official/archive/main.zip#check-performance

Please download this .zip file, extract it, and install it in the .claude/skills/ directory.
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