web-perf

Analyze Core Web Vitals and network request chains for web performance.

Updated Mar 8, 2026
One-click install
npx skills add https://github.com/martinezharo/fewya --skill web-perf-martinezharo
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: web-perf
Source: https://github.com/martinezharo/fewya/tree/main/.agents/skills/web-perf
Command: npx skills add https://github.com/martinezharo/fewya --skill web-perf-martinezharo

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This skill addresses slow page load times and poor user experience by identifying bottlenecks in rendering, network dependencies, and resource loading.

Core Features & Use Cases

  • Core Web Vitals Analysis: Measures and evaluates LCP, INP, and CLS against industry standards.
  • Network & Render Auditing: Identifies render-blocking resources and inefficient network dependency chains.
  • Accessibility & Optimization: Provides actionable insights for improving accessibility and reducing payload sizes.

Quick Start

Use the web-perf skill to run a full performance audit on the website at https://example.com.

Frequently Asked Questions about web-perf

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I audit Core Web Vitals like LCP, INP, and CLS for my website?

You can audit Core Web Vitals by measuring and evaluating LCP, INP, and CLS metrics against industry standards to identify bottlenecks in rendering, network dependencies, and resource loading.

What's the best way to identify render-blocking resources and network dependency chains?

The best way to identify render-blocking resources is through network and render auditing, which traces inefficient network dependency chains and highlights resources slowing down page load speed.

Do I need the chrome-devtools MCP server to run a web performance audit?

Yes, you need the chrome-devtools MCP server to execute performance traces, network analysis, and accessibility snapshots required for auditing web applications and identifying optimization opportunities.

Can I measure website accessibility gaps and payload sizes during a performance audit?

Yes, you can measure website accessibility gaps and payload sizes during a performance audit to receive actionable insights for improving accessibility and reducing overall resource payload sizes.

How do I run a full performance audit on a specific page like https://example.com?

To run a full performance audit on a specific page, you use the web-perf skill to analyze web performance metrics, execute traces, and identify optimization opportunities for that target URL.

Why does my web application have poor user experience and slow page load times?

Poor user experience and slow page load times are typically caused by bottlenecks in rendering, network dependencies, and resource loading, which a performance audit can identify and help optimize.