react-performance

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.

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.

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.

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.

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.