react-performance

Profile React apps and reduce unnecessary re-renders with memoization patterns.

1|Updated Feb 19, 2026
One-click install
npx skills add https://github.com/juburr/mad-skills --skill react-performance-juburr
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: react-performance
Source: https://github.com/juburr/mad-skills/tree/main/react-performance
Command: npx skills add https://github.com/juburr/mad-skills --skill react-performance-juburr

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

React performance issues such as unnecessary re-renders, expensive memoization, and inefficient rendering pipelines hinder user experience.

Core Features & Use Cases

  • Guidance on preventing re-renders through composition-first patterns, memoization APIs (React.memo, useMemo, useCallback), and state management.
  • Techniques for concurrent features (useTransition, useDeferredValue, automatic batching), high-frequency update handling (RAF batching, direct DOM via refs, virtualization, Canvas/WebGL patterns), and performance-focused code reviews.
  • Profiling and tooling guidance (React DevTools Profiler, React Scan, web-vitals) with real-world scenarios like large lists, data-heavy dashboards, and form-heavy apps.

Quick Start

Run a quick profiling session on your React project to identify a bottleneck, then apply the recommended composition-first patterns to reduce re-renders and improve performance.

Frequently Asked Questions about react-performance

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

FAQPage Schema
How do I reduce unnecessary re-renders in React?▼

Reduce unnecessary React re-renders by applying composition-first patterns, state management adjustments, and memoization APIs like React.memo, useMemo, and useCallback to optimize component rendering pipelines safely.

What's the best way to profile React performance bottlenecks?▼

Profile React performance bottlenecks using tooling guidance for React DevTools Profiler, React Scan, and web-vitals to diagnose data-heavy dashboards or large lists and implement measurable improvements.

How do I handle high-frequency updates in React without freezing the UI?▼

Handle high-frequency React updates by applying request animation frame batching, direct DOM manipulation via refs, virtualization, and Canvas/WebGL patterns to prevent UI freezing during rapid data flows.

Does this React optimization approach use concurrent features like useTransition?▼

Yes, this React optimization approach uses concurrent features like useTransition, useDeferredValue, and automatic batching to manage rendering pipelines and improve application responsiveness.

When should I not use useMemo or useCallback for React performance?▼

You should avoid excessive memoization when composition-first patterns can solve the issue more predictably, as misapplied memoization APIs add overhead without resolving underlying React state management or data flow inefficiencies.