performance-audit

Analyze web application performance bottlenecks using Lighthouse and browser DevTools.

6|2|Updated Dec 19, 2025
One-click install
npx skills add https://github.com/xiaoniuge36/codegen-engine-mcp --skill performance-audit-xiaoniuge36
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: performance-audit
Source: https://github.com/xiaoniuge36/codegen-engine-mcp/tree/main/.cursor/skills/performance-audit
Command: npx skills add https://github.com/xiaoniuge36/codegen-engine-mcp --skill performance-audit-xiaoniuge36

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill addresses slow loading times, rendering jank, and memory issues in web applications, ensuring a smooth and responsive user experience.

Core Features & Use Cases

  • Performance Analysis: Identifies bottlenecks using tools like Lighthouse and browser DevTools.
  • Optimization Strategies: Provides actionable advice for improving load speed, rendering, memory management, and bundle sizes.
  • Use Case: When a user reports their website feels sluggish, this Skill can analyze the performance metrics and suggest specific code changes to speed up the initial page load and improve interactivity.

Quick Start

Analyze the performance of the current web page and suggest optimizations.

Frequently Asked Questions about performance-audit

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

FAQPage Schema
How do I analyze web application performance bottlenecks affecting loading speed?

To analyze web application performance bottlenecks, you can use tools like Lighthouse and browser developer tools to identify issues in loading, rendering, and memory usage. This process provides actionable metrics to improve loading speed and overall responsiveness.

What is the best way to improve Core Web Vitals for a sluggish website?

The best way to improve Core Web Vitals is by identifying rendering jank and resource loading bottlenecks through auditing. You can then apply actionable optimization strategies to speed up initial page load and enhance interactivity.

How do I find and fix memory leaks causing rendering jank in my web app?

To fix memory leaks causing rendering jank, you need to audit your web application's memory usage using browser developer tools. Identifying these specific memory issues allows you to apply targeted memory management strategies for a smoother user experience.

Can I use Lighthouse and browser DevTools to optimize bundle sizes and loading speed?

Yes, you can use Lighthouse and browser DevTools to perform a comprehensive performance audit. These tools identify bottlenecks in resource loading and bundle sizes, enabling you to implement actionable strategies to optimize web performance.

Why does my website feel sluggish and how can I speed up the initial page load?

Your website feels sluggish due to bottlenecks in loading, rendering, or memory usage. By analyzing performance metrics with auditing tools, you can apply specific code changes and optimization strategies to speed up the initial page load and improve interactivity.

When do I need to run a performance audit on my web application?

You need to run a performance audit when users report slow loading times, rendering jank, or memory issues. Auditing identifies bottlenecks in resource loading and memory management to ensure a smooth and responsive web experience.