react-performance

Diagnose and eliminate React render bottlenecks, oversized bundles, and memory leaks.

Updated Jan 17, 2026
One-click install
npx skills add https://github.com/VanhPoker/VietNamLookmaxing --skill react-performance-vanhpoker
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: react-performance
Source: https://github.com/VanhPoker/VietNamLookmaxing/tree/main/.agent/skills/react-performance
Command: npx skills add https://github.com/VanhPoker/VietNamLookmaxing --skill react-performance-vanhpoker

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

React apps struggle with slow renders, bloated bundles, and memory churn, which degrade user experience.

Core Features & Use Cases

  • Profiling and optimization for render performance, bundle size, and memory management in React apps using DevTools, web-vitals, and virtualization.
  • Guidance for memoization, code-splitting, virtualization, and concurrent features to meet Core Web Vitals targets.
  • Real-world example: improving a sluggish dashboard by adding memoization, virtualization, and route-based code splitting.

Quick Start

Profile the app with React DevTools Profiler and implement memoization and route-based code splitting to boost performance.

Frequently Asked Questions about react-performance

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

FAQPage Schema
How do I fix slow React renders and reduce bundle size?

React performance optimization involves diagnosing render bottlenecks and oversized bundles using React DevTools Profiler, then applying memoization, code splitting with React.lazy, and virtualization to improve Core Web Vitals.

What's the best way to profile React performance and improve Core Web Vitals?

Profile React performance using React DevTools Profiler and the web-vitals library to measure Core Web Vitals, identifying render bottlenecks and memory leaks to target with memoization, code splitting, and virtualization.

When should I use memoization and virtualization in my React app?

Use memoization (React.memo, useCallback, useMemo) and virtualization in React apps with slow renders, large lists, or memory churn to prevent unnecessary re-renders, reduce memory growth, and optimize render performance.

Can I optimize a production React app with memory leaks and sluggish dashboard renders?

Yes, optimize production React apps with memory leaks and sluggish dashboard renders by diagnosing memory churn, adding memoization, implementing virtualization for large lists, and applying route-based code splitting to boost performance.

How do I use React.lazy for code splitting to reduce bloated bundles?

Use React.lazy for code splitting to reduce bloated bundles by dynamically importing route components, deferring non-critical JavaScript loading, and improving initial load performance in React applications.