react-impl-performance

Analyze React render performance and optimize re-renders and bundle size.

6|Updated Mar 19, 2026

Search Tags:#performance #react #profiling #memoization #virtualization #code-splitting

Ready to run

npx skills add https://github.com/OpenAEC-Foundation/React-Claude-Skill-Package --skill react-impl-performance

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: react-impl-performance
Source: https://github.com/OpenAEC-Foundation/React-Claude-Skill-Package/tree/main/skills/source/react-impl/react-impl-performance
Command: npx skills add https://github.com/OpenAEC-Foundation/React-Claude-Skill-Package --skill react-impl-performance

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

Optimizes render performance and guides React developers through proven techniques to avoid premature optimization, bottlenecks, and heavy re-renders. It covers strategies for memoization, code splitting, profiling, and resource optimization to keep apps fast and maintainable.

Core Features & Use Cases

Guidance on memoization (React.memo, useMemo, useCallback)
Use of React Compiler (React 19) and Profiler for performance measurement
Techniques for code splitting, lazy loading, virtualization, and image optimization
Practical patterns for selective optimization and avoiding common pitfalls

Quick Start

Measure a component with Profiler, then apply memoization only after confirming a bottleneck.

Frequently Asked Questions about react-impl-performance

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

FAQPage Schema

How do I fix unnecessary re-renders in my React app?▼

Fix unnecessary re-renders in React by measuring components with the Profiler to confirm bottlenecks, then selectively applying memoization strategies like React.memo, useMemo, and useCallback to optimize render performance.

When should I use memoization in React?▼

Use memoization in React only after confirming a render bottleneck with the Profiler. Apply React.memo, useMemo, and useCallback selectively to avoid premature optimization and keep your application maintainable.

Does this React performance optimization guidance work with React 19?▼

Yes, the React performance optimization guidance supports React 18 and 19 projects using TypeScript, including specific strategies for leveraging the React Compiler to automate memoization and reduce heavy re-renders.

What's the best way to reduce bundle size in a React application?▼

Reduce bundle size in a React application by applying code splitting and lazy loading techniques. These strategies defer loading non-critical resources, improving initial load performance and overall resource optimization.

How do I profile React component render performance?▼

Profile React component render performance by using the React Profiler to measure render times and identify bottlenecks. This confirms exactly where selective optimization and memoization are actually needed.