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How can I improve the performance of a React application using lazy loading?

Asked on Dec 05, 2025

Answer

Lazy loading in React can significantly enhance performance by deferring the loading of components until they are needed. This approach reduces the initial load time and improves the user experience by loading only the necessary parts of the application at first.

<!-- BEGIN COPY / PASTE -->
    import React, { Suspense, lazy } from 'react';

    const LazyComponent = lazy(() => import('./LazyComponent'));

    function App() {
      return (
        <div>
          <Suspense fallback={<div>Loading...</div>}>
            <LazyComponent />
          </Suspense>
        </div>
      );
    }

    export default App;
    <!-- END COPY / PASTE -->

Additional Comment:

Use React's `lazy()` function to dynamically import components.
Wrap lazy-loaded components with `Suspense` to handle loading states.
Ensure that the fallback UI in `Suspense` provides a good user experience during loading.
Consider lazy loading routes and other large components to further optimize performance.
Test the application to ensure that lazy loading does not introduce any unexpected behavior.

✅ Answered with Web Development best practices.

Ask any question about Web Development here... and get an instant response.

How can I improve the performance of a React application using lazy loading?

Asked on Dec 05, 2025

Answer

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