React Performance Optimization: From Render to Production

React Performance Optimization: From Render to Production

React applications can become slow if not optimized properly. This guide covers essential techniques to keep your React apps blazingly fast.

Code Splitting

Break your application into smaller chunks that are loaded on demand using React.lazy and Suspense.

Memoization

Use React.memo to prevent unnecessary re-renders of functional components.

const MyComponent = React.memo(function MyComponent(props) {
  return <div>{props.value}</div>;
});

Virtual Lists

For long lists, implement virtualization to only render visible items.

Image Optimization

Always optimize images before serving them. Use modern formats like WebP and lazy loading.

Bundle Analysis

Use tools like webpack-bundle-analyzer to understand your bundle size and identify optimization opportunities.

Performance matters. Your users will thank you for a snappy experience.