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performance-profiling

Audit web performance with Lighthouse and browser DevTools.

Updated Mar 11, 2026
Search Tags:#performance#web vitals#optimization#profiling#lighthouse#bundle analysis
One-click install
npx skills add https://github.com/Industrial/rust-symphony --skill performance-profiling-industrial
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: performance-profiling
Source: https://github.com/Industrial/rust-symphony/tree/main/.cursor/skills/performance-profiling
Command: npx skills add https://github.com/Industrial/rust-symphony --skill performance-profiling-industrial

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires lighthouse, and includes scripts (resource) components.

What problem does it solve?

This Skill helps identify and fix performance bottlenecks in web applications, leading to faster load times, improved user experience, and better search engine rankings.

Core Features & Use Cases

  • Performance Auditing: Utilizes Lighthouse to audit web pages across key metrics like LCP, INP, and CLS.
  • Bundle Analysis: Provides insights into JavaScript bundle sizes, identifying large dependencies and opportunities for code splitting.
  • Runtime Profiling: Guides users on analyzing browser DevTools for performance and memory issues.
  • Use Case: A developer can use this Skill to audit their website's performance, identify that a large JavaScript library is causing slow load times, and then use the provided guidance to implement code splitting for that library.

Quick Start

Run a Lighthouse performance audit on the provided URL.

Frequently Asked Questions about performance-profiling

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

FAQPage Schema
How do I identify and fix web performance bottlenecks?▼

To identify web performance bottlenecks, you can run a Lighthouse audit to measure key metrics like LCP, INP, and CLS, analyze your JavaScript bundle size, and use browser DevTools to profile runtime execution and memory issues.

What is the best way to analyze JavaScript bundle size for large dependencies?▼

Analyzing JavaScript bundle size involves inspecting your build output to identify large dependencies, enabling you to implement code splitting and reduce slow initial loads for better web vitals.

How does a Lighthouse audit improve core web vitals?▼

A Lighthouse audit improves core web vitals by evaluating your web page against key performance metrics like LCP, INP, and CLS, providing actionable guidance to fix slow initial loads and inefficient runtime execution.

Can I use browser DevTools to profile runtime performance and memory issues?▼

Yes, you can use browser DevTools to profile runtime performance and memory issues, allowing you to pinpoint inefficient runtime execution and resolve performance bottlenecks in your web application.

Do I need to install Lighthouse to audit web performance metrics?▼

Yes, you need Lighthouse installed as a dependency to run performance audits, which will measure your core web vitals and identify opportunities for optimization such as code splitting.

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