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performance-optimization

Measure and fix web application performance bottlenecks using Lighthouse and Core Web Vitals.

Updated Jun 24, 2026
Search Tags:#web vitals#performance optimization#performance measurement#response time#load time
One-click install
npx skills add https://github.com/udsy19/.claude --skill performance-optimization-udsy19
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: performance-optimization
Source: https://github.com/udsy19/.claude/tree/main/skills/performance-optimization
Command: npx skills add https://github.com/udsy19/.claude --skill performance-optimization-udsy19

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires lighthouse, web-vitals, application performance monitoring, and includes scripts (resource) and references (resource) components.

What problem does it solve?

This Skill addresses performance bottlenecks in applications, ensuring that they meet specified performance criteria and user expectations.

Core Features & Use Cases

  • Performance Measurement: Offers tools and methods for measuring performance metrics like load time, response time, and Core Web Vitals.
  • Bottleneck Identification: Assists in identifying and addressing specific performance issues in both frontend and backend.
  • Optimization Workflow: Provides a structured approach to performance optimization, including measurement, identification, fixing, verification, and guarding against regressions.
  • Use Case: When you suspect a performance regression or need to improve the load time of a web application, this Skill can help diagnose and resolve the issue.

Quick Start

Run the performance-optimization skill to start profiling your application and identify potential performance bottlenecks.

Frequently Asked Questions about performance-optimization

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

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

To resolve performance bottlenecks, measure load time, response time, and Core Web Vitals using Lighthouse, then apply targeted frontend and backend fixes. This structured optimization workflow ensures issues are diagnosed and resolved effectively.

How do I measure Core Web Vitals and load time for my web app?▼

Core Web Vitals and load time are measured using the web-vitals library and Lighthouse. These tools capture frontend performance metrics, allowing you to profile applications and pinpoint specific rendering or response time bottlenecks.

What's the best workflow for performance optimization to prevent regressions?▼

The best performance optimization workflow involves measuring metrics, identifying bottlenecks, fixing issues, verifying improvements, and guarding against regressions. This structured approach ensures sustained application performance and meets user expectations.

Do I need application performance monitoring to improve response time?▼

Yes, application performance monitoring is needed to accurately improve response time. It works alongside Lighthouse and the web-vitals library to measure backend and frontend metrics, ensuring you can diagnose and resolve performance issues effectively.

Can I use Lighthouse to fix both frontend and backend performance issues?▼

Lighthouse primarily profiles frontend performance metrics like Core Web Vitals and load time. While it identifies frontend rendering bottlenecks, application performance monitoring is needed to diagnose and resolve backend response time issues.

Why does my web application suffer from slow load time despite optimization?▼

Slow load time persists when performance bottlenecks are not fully measured. Using Lighthouse and the web-vitals library identifies remaining Core Web Vitals issues, enabling targeted fixes to frontend rendering or backend response delays.

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