# Source: https://nextjs.org/docs/app/api-reference/functions/image-response.md

# ImageResponse
@doc-version: 16.0.4


The `ImageResponse` constructor allows you to generate dynamic images using JSX and CSS. This is useful for generating social media images such as Open Graph images, Twitter cards, and more.

## Reference

### Parameters

The following parameters are available for `ImageResponse`:

```jsx
import { ImageResponse } from 'next/og'

new ImageResponse(
  element: ReactElement,
  options: {
    width?: number = 1200
    height?: number = 630
    emoji?: 'twemoji' | 'blobmoji' | 'noto' | 'openmoji' = 'twemoji',
    fonts?: {
      name: string,
      data: ArrayBuffer,
      weight: number,
      style: 'normal' | 'italic'
    }[]
    debug?: boolean = false

    // Options that will be passed to the HTTP response
    status?: number = 200
    statusText?: string
    headers?: Record<string, string>
  },
)
```

> Examples are available in the [Vercel OG Playground](https://og-playground.vercel.app/).

### Supported HTML and CSS features

`ImageResponse` supports common CSS properties including flexbox and absolute positioning, custom fonts, text wrapping, centering, and nested images.

Please refer to [Satori’s documentation](https://github.com/vercel/satori#css) for a list of supported HTML and CSS features.

## Behavior

* `ImageResponse` uses [@vercel/og](https://vercel.com/docs/concepts/functions/edge-functions/og-image-generation), [Satori](https://github.com/vercel/satori), and Resvg to convert HTML and CSS into PNG.
* Only flexbox and a subset of CSS properties are supported. Advanced layouts (e.g. `display: grid`) will not work.
* Maximum bundle size of `500KB`. The bundle size includes your JSX, CSS, fonts, images, and any other assets. If you exceed the limit, consider reducing the size of any assets or fetching at runtime.
* Only `ttf`, `otf`, and `woff` font formats are supported. To maximize the font parsing speed, `ttf` or `otf` are preferred over `woff`.

## Examples

### Route Handlers

`ImageResponse` can be used in Route Handlers to generate images dynamically at request time.

```js filename="app/api/route.js"
import { ImageResponse } from 'next/og'

export async function GET() {
  try {
    return new ImageResponse(
      (
        <div
          style={{
            height: '100%',
            width: '100%',
            display: 'flex',
            flexDirection: 'column',
            alignItems: 'center',
            justifyContent: 'center',
            backgroundColor: 'white',
            padding: '40px',
          }}
        >
          <div
            style={{
              fontSize: 60,
              fontWeight: 'bold',
              color: 'black',
              textAlign: 'center',
            }}
          >
            Welcome to My Site
          </div>
          <div
            style={{
              fontSize: 30,
              color: '#666',
              marginTop: '20px',
            }}
          >
            Generated with Next.js ImageResponse
          </div>
        </div>
      ),
      {
        width: 1200,
        height: 630,
      }
    )
  } catch (e) {
    console.log(`${e.message}`)
    return new Response(`Failed to generate the image`, {
      status: 500,
    })
  }
}
```

### File-based Metadata

You can use `ImageResponse` in a [`opengraph-image.tsx`](/docs/app/api-reference/file-conventions/metadata/opengraph-image.md) file to generate Open Graph images at build time or dynamically at request time.

```tsx filename="app/opengraph-image.tsx"
import { ImageResponse } from 'next/og'

// Image metadata
export const alt = 'My site'
export const size = {
  width: 1200,
  height: 630,
}

export const contentType = 'image/png'

// Image generation
export default async function Image() {
  return new ImageResponse(
    (
      // ImageResponse JSX element
      <div
        style={{
          fontSize: 128,
          background: 'white',
          width: '100%',
          height: '100%',
          display: 'flex',
          alignItems: 'center',
          justifyContent: 'center',
        }}
      >
        My site
      </div>
    ),
    // ImageResponse options
    {
      // For convenience, we can re-use the exported opengraph-image
      // size config to also set the ImageResponse's width and height.
      ...size,
    }
  )
}
```

### Custom fonts

You can use custom fonts in your `ImageResponse` by providing a `fonts` array in the options.

```tsx filename="app/opengraph-image.tsx"
import { ImageResponse } from 'next/og'
import { readFile } from 'node:fs/promises'
import { join } from 'node:path'

// Image metadata
export const alt = 'My site'
export const size = {
  width: 1200,
  height: 630,
}

export const contentType = 'image/png'

// Image generation
export default async function Image() {
  // Font loading, process.cwd() is Next.js project directory
  const interSemiBold = await readFile(
    join(process.cwd(), 'assets/Inter-SemiBold.ttf')
  )

  return new ImageResponse(
    (
      // ...
    ),
    // ImageResponse options
    {
      // For convenience, we can re-use the exported opengraph-image
      // size config to also set the ImageResponse's width and height.
      ...size,
      fonts: [
        {
          name: 'Inter',
          data: interSemiBold,
          style: 'normal',
          weight: 400,
        },
      ],
    }
  )
}
```

## Version History

| Version   | Changes                                               |
| --------- | ----------------------------------------------------- |
| `v14.0.0` | `ImageResponse` moved from `next/server` to `next/og` |
| `v13.3.0` | `ImageResponse` can be imported from `next/server`.   |
| `v13.0.0` | `ImageResponse` introduced via `@vercel/og` package.  |