React Performance Tips
If you’re working with React and want your app to be fast and smooth, this article gives you simple and practical tips to improve performance.
React apps sometimes feel slow? That’s normal if your code isn’t optimized, but a few tricks can make a big difference:
Use React.memo
If you have a heavy component that rerenders unnecessarily, wrap it with React.memo to prevent extra renders.
Use useCallback & useMemo
Functions and values created every render can slow your app. useCallback and useMemo help memoize them so they aren’t recreated every time.
Split Code & Lazy Load Components
For pages with many components, try React.lazy and Suspense to load only what’s needed, reducing initial load.
Avoid Inline Anonymous Functions in JSX
Inline functions are recreated on every render. Define them outside JSX to improve performance.
Optimize Large Lists Rendering
When displaying large lists, use proper keys and consider libraries like react-window to render only what’s visible on screen.
💡 Reducing unnecessary re-renders and keeping components lightweight will noticeably improve your app’s performance.
