How to implement lazy loading of images in Next.js



Image not found!!

Lazy loading of images is a technique to defer the loading of images until they are needed. In Next.js, you can implement lazy loading of images using the next/image component, which is optimized for image loading and performance. The loading attribute in the next/image component can be used to achieve lazy loading.

Here's a step-by-step guide on how to implement lazy loading of images in Next.js:

  1. Install Next.js: Make sure you have Next.js installed in your project.

    bash
    npm install next

  2. Create an images folder: Inside your Next.js project, create an images folder where you'll store your images.

  3. Use the next/image component: Import the next/image component in your React component and use it to display images. Set the loading attribute to "lazy" to enable lazy loading.

    jsx
    // components/MyImageComponent.js
import Image from 'next/image';

const MyImageComponent = () => {
  return (
    <div>
      <Image
        src="/images/my-image.jpg" // Replace with your image path
        alt="Description of the image"
        width={600} // Set the width of the image
        height={400} // Set the height of the image
        loading="lazy" // Enable lazy loading
      />
    </div>
  );
};

export default MyImageComponent;

  4. Run your Next.js app: Start your Next.js app to see the lazy loading in action.

    bash
    npm run dev

Now, when users visit the page containing your MyImageComponent, the image will be loaded lazily, improving the initial page load performance.

Note: The loading="lazy" attribute is supported in modern browsers. If you need to support older browsers, you may want to use a polyfill or consider other lazy loading techniques.

Additionally, make sure that the height and width properties are set for your images. This helps the browser allocate space for the image before it is loaded, preventing layout shifts when the image is finally rendered.

Category List