Advanced Image Optimization in Next.js

1. Introduction

In this lesson, we will explore advanced image optimization techniques in Next.js. Images are critical for web performance, and optimizing them can enhance user experience and SEO.

2. Key Concepts

• Image Formats: Understanding formats like JPEG, PNG, SVG, and WebP.
• Responsive Images: Techniques for serving different image sizes based on the device.
• Lazy Loading: Loading images only when they are in the viewport.

3. Next.js Image Component

The Next.js Image component automatically optimizes images, providing several benefits:

• Automatic resizing and optimization based on device size.
• Support for lazy loading out of the box.
• Support for modern image formats.

3.1 Example Usage of Next.js Image Component

import Image from 'next/image';

export default function MyComponent() {
    return (
        
    );
}
            

4. Best Practices

• Use next/image for all images.
• Serve images in modern formats (e.g., WebP).
• Utilize a CDN for faster delivery.
• Optimize images during the build process using tools like sharp.
• Implement responsive images using the sizes attribute in the Image component.

5. FAQ