next/image

Examples
Version History
VersionChanges
v11.1.0onLoadingComplete and lazyBoundary props added.
v11.0.0src prop support for static import.
placeholder prop added.
blurDataURL prop added.
v10.0.5loader prop added.
v10.0.1layout prop added.
v10.0.0next/image introduced.

Before moving forward, we recommend you to read Image Optimization first.

Image Optimization can be enabled via the <Image /> component exported by next/image.

Usage

For an example, consider a project with the following files:

  • pages/index.js
  • public/me.png

We can serve an optimized image like so:

import Image from 'next/image'
import profilePic from '../public/me.png'

function Home() {
  return (
    <>
      <h1>My Homepage</h1>
      <Image src={profilePic} alt="Picture of the author" />
      <p>Welcome to my homepage!</p>
    </>
  )
}

export default Home

Required Props

The <Image /> component requires the following properties.

src

Required and must be one of the following:

  1. A statically imported image file, as in the example code above, or
  2. A path string. This can be either an absolute external URL, or an internal path depending on the loader.

When using an external URL, you must add it to domains in next.config.js.

width

The width of the image, in pixels. Must be an integer without a unit.

Required, except for statically imported images, or those with layout="fill".

height

The height of the image, in pixels. Must be an integer without a unit.

Required, except for statically imported images, or those with layout="fill".

Optional Props

The <Image /> component optionally accepts the following properties.

layout

The layout behavior of the image as the viewport changes size.

layoutBehaviorsrcSetsizes
intrinsic (default)Scale down to fit width of container, up to image size1x, 2x (based on imageSizes)N/A
fixedSized to width and height exactly1x, 2x (based on imageSizes)N/A
responsiveScale to fit width of container640w, 750w, ... 2048w, 3840w (based on imageSizes and deviceSizes)100vw
fillGrow in X and Y axes to fill container640w, 750w, ... 2048w, 3840w (based on imageSizes and deviceSizes)100vw
  • Demo the intrinsic layout (default)
    • When intrinsic, the image will scale the dimensions down for smaller viewports, but maintain the original dimensions for larger viewports.
  • Demo the fixed layout
    • When fixed, the image dimensions will not change as the viewport changes (no responsiveness) similar to the native img element.
  • Demo the responsive layout
    • When responsive, the image will scale the dimensions down for smaller viewports and scale up for larger viewports.
    • Ensure the parent element uses display: block in their stylesheet.
  • Demo the fill layout
    • When fill, the image will stretch both width and height to the dimensions of the parent element, provided the parent element is relative.
    • This is usually paired with the objectFit property.
    • Ensure the parent element has position: relative in their stylesheet.
  • Demo background image

loader

A custom function used to resolve URLs. Defaults to images object in next.config.js.

loader is a function returning a string, given the following parameters:

import Image from 'next/image'

const myLoader = ({ src, width, quality }) => {
  return `https://example.com/${src}?w=${width}&q=${quality || 75}`
}

const MyImage = (props) => {
  return (
    <Image
      loader={myLoader}
      src="me.png"
      alt="Picture of the author"
      width={500}
      height={500}
    />
  )
}

sizes

A string mapping media queries to device sizes. Defaults to 100vw.

We recommend setting sizes when using layout="responsive" or layout="fill" and your image will not be the same width as the viewport.

Learn more.

quality

The quality of the optimized image, an integer between 1 and 100 where 100 is the best quality. Defaults to 75.

priority

When true, the image will be considered high priority and preload.

Should only be used when the image is visible above the fold. Defaults to false.

placeholder

A placeholder to use while the image is loading, possible values are blur or empty. Defaults to empty.

When blur, the blurDataURL property will be used as the placeholder. If src is an object from a static import and the imported image is jpg, png, or webp, then blurDataURL will automatically be populated.

For dynamic images, you must provide the blurDataURL property. Solutions such as Plaiceholder can help with base64 generation.

When empty, there will be no placeholder while the image is loading, only empty space.

Try it out:

Advanced Props

In some cases, you may need more advanced usage. The <Image /> component optionally accepts the following advanced properties.

objectFit

The image fit when using layout="fill".

Learn more

objectPosition

The image position when using layout="fill".

Learn more

onLoadingComplete

A callback function that is invoked once the image is completely loaded and the placeholder has been removed.

The onLoadingComplete function accepts one parameter, an object with the following properties:

loading

Attention: This property is only meant for advanced usage. Switching an image to load with eager will normally hurt performance.

We recommend using the priority property instead, which properly loads the image eagerly for nearly all use cases.

The loading behavior of the image. Defaults to lazy.

When lazy, defer loading the image until it reaches a calculated distance from the viewport.

When eager, load the image immediately.

Learn more

blurDataURL

A Data URL to be used as a placeholder image before the src image successfully loads. Only takes effect when combined with placeholder="blur".

Must be a base64-encoded image. It will be enlarged and blurred, so a very small image (10px or less) is recommended. Including larger images as placeholders may harm your application performance.

Try it out:

You can also generate a solid color Data URL to match the image.

lazyBoundary

A string (with similar syntax to the margin property) that acts as the bounding box used to detect the intersection of the viewport with the image and trigger lazy loading. Defaults to "200px".

Learn more

unoptimized

When true, the source image will be served as-is instead of changing quality, size, or format. Defaults to false.

Other Props

Other properties on the <Image /> component will be passed to the underlying img element with the exception of the following:

Styling

next/image wraps the img element with other div elements to maintain the aspect ratio of the image and prevent Cumulative Layout Shift.

To add styles to the underlying img element, pass the className prop to the <Image /> component. Then, use Next.js' built-in CSS support to add rules to that class.

Note: If using layout="fill", ensure the parent element uses position: relative.

Related

For more information on what to do next, we recommend the following sections: