如何使用 next.js 图像组件与 HTML<picture> 元素？</picture>

Question

Next.js has an Image component that lazy loads images and also provides a srcset for a given image.

However, sometimes we want to deliver different images for different devices ( art redirection ).

Mozilla says we should use <picture> element for this purpose, providing different images for different media queries.

I can't find an article (even in next.js official docs) to tell us how can we do that using <Image> component.

Is it possible? How can I use next.js <Image> component and HTML <picture> element together?

Answer 1

I have searched for hundreds of websites, this is the only solution I found which workable on Next.js ( with tailwindcss ).

import Image from 'next/image'

    <div>
      <div className="md:hidden">
        <Image src="Banner-767x500.webp" height={500} width={767} />
      </div>
      <div className="hidden md:inline-flex lg:hidden">
        <Image src="Banner-1023x500.webp" height={500} width={1023} />
      </div>
      <div className="hidden lg:inline-flex xl:hidden">
        <Image src="Banner-1400x500.webp" height={500} width={1400} />
      </div>
      <div className="hidden xl:inline-flex">
        <Image height={500} width={2000} src="Banner-2000x500.webp" />
      </div>
    </div>

Answer 2

A better approach is to use vanilla HTML as the following example, tested in Next.js 13.

Pros:

• Full control of what you're showing and when.

Cons:

• Manual optimization of assets.

<picture>
  <source srcSet="/portrait/my-dog.webp" media="(orientation: portrait)" />
  <img src="/my-dog.webp" alt="A beautiful labrador" loading="lazy" />
</picture>

Answer 3

The new version of Next Image component removes a lot of the extraneous HTML and styles and allows full flexibility of the img tag. With that new improvement in the component we can use the picture tag and the image component as normal.

Plus, Web.dev explains the way the picture element works really well: https://web.dev/learn/design/picture-element/

In the same way that srcset builds upon the src attribute, the picture element builds upon the img element. The picture element wraps around an img element. If there is no img element nested inside the picture element, the picture element won't work. Like the srcset attribute, the picture element will update the value of the src attribute in that img element. The difference is that where the srcset attribute gives suggestions to the browser, the picture element gives commands. This gives you control.

So, understanding that the picture element is just a wrapper of the img element which the browser still requires, and using the new version of next/image (Nextjs v. 13), you can write it as:

import Image from "next/image";

<picture>
    <source srcset=".." media="..."/>
    <Image src="..." height="..." width="..." alt="..." />
</picture>