react-performance

Optimize React applications with memoization, code splitting, and re-render elimination.

14|5|Updated Jan 29, 2026

Search Tags:#performance #react #optimization #profiling #code splitting #memoization #re-renders

Ready to run

npx skills add https://github.com/oakoss/agent-skills --skill react-performance-oakoss

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: react-performance
Source: https://github.com/oakoss/agent-skills/tree/main/skills/react-performance
Command: npx skills add https://github.com/oakoss/agent-skills --skill react-performance-oakoss

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) and references (resource) components.

What problem does it solve?

This Skill addresses slow React application performance by providing strategies to reduce bundle size, eliminate unnecessary re-renders, and optimize rendering performance.

Core Features & Use Cases

Memoization: Apply React.memo, useMemo, useCallback, or leverage the React Compiler for automatic optimization.
Code Splitting: Implement React.lazy and Suspense for on-demand component loading.
Bundle Optimization: Avoid barrel files and defer third-party scripts.
Re-render Elimination: Use startTransition and functional setState.
Profiling: Utilize React DevTools Profiler and bundle analyzers.
Use Case: Debugging a React app that feels sluggish during user interactions, identifying which components are causing performance bottlenecks, and implementing targeted optimizations to improve Time To Interactive (TTI).

Quick Start

Use the react-performance skill to analyze the performance of the main dashboard component.

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 app performance and eliminate unnecessary re-renders?▼

Fix slow React app performance by applying memoization with React.memo, useMemo, and useCallback to eliminate unnecessary re-renders. You can also use startTransition and functional setState to optimize rendering and improve Time To Interactive.

What is the best way to reduce large React bundle sizes?▼

The best way to reduce large React bundle sizes is implementing code splitting with React.lazy and Suspense for on-demand component loading. Additionally, avoid barrel files and defer third-party scripts to optimize your bundle.

How does React profiling work to find components causing performance bottlenecks?▼

React profiling works by utilizing the React DevTools Profiler to identify which components are causing performance bottlenecks during sluggish user interactions. Bundle analyzers are also used to pinpoint large dependencies affecting load times.

Can I use the React Compiler for automatic performance optimization instead of manual memoization?▼

Yes, you can leverage the React Compiler for automatic optimization instead of manually applying React.memo, useMemo, and useCallback. This automates memoization to prevent unnecessary re-renders and improve responsiveness.

When should I use code splitting in a React application?▼

You should use code splitting in a React application when addressing slow load times and large bundle sizes. Implement React.lazy and Suspense to load components on-demand, deferring third-party scripts to improve Time To Interactive.