---
title: '`next/image` Un-configured Host'
---

## Why This Error Occurred

One of your pages that leverages the `next/image` component, passed a `src` value that uses a hostname in the URL that isn't defined in the `images.remotePatterns` in `next.config.js`.

Each part of the `src` value is strictly matched against your `images.remotePatterns` definitions. Matching is exact and case-sensitive, meaning a mismatch in any single part will fail the check.

For a URL like `https://example.org/images/example?v=1234`, the following parts must match the pattern you configured:

- **Protocol**: `http` vs `https` must match exactly.
- **Hostname**: `example.org` is different from `www.example.org` and from subdomains like `assets.example.org`.
- **Port**: If present (e.g. `:3000`), it must be included.
- **Pathname**: The path must be covered by your glob, e.g. `/**` or `/images/**`.
- **Search**: If specified in a pattern, it must match the full search string exactly (including the leading `?`). Globs are not supported for search.

If any of these differ from the actual `src`, the image will be rejected.

Common pitfalls that cause this error:

- Using `https` in `src` but only allowing `http` (or vice‑versa).
- Loading from a subdomain like `assets.example.com` while only configuring `example.com`.
- Missing a port during local/dev usage, e.g. `http://localhost:3000`.
- A too‑narrow pathname pattern (e.g. `/images/` instead of `/images/**`).
- When using the `URL` constructor, if no `search` is specified, then the `search` property is set to an empty string `''`, which means search params are **NOT** allowed.

See the [Remote Patterns](/docs/pages/api-reference/components/image#remotepatterns) reference for details.

## Possible Ways to Fix It

Add the protocol, hostname, port, and pathname to the `images.remotePatterns` config in `next.config.js`:

```js filename="next.config.js"
module.exports = {
  images: {
    remotePatterns: [new URL('https://assets.example.com/account123/**')],
  },
}
```

### With specific search params

To allow a single search param, `v=1234`:

```js filename="next.config.js"
module.exports = {
  images: {
    remotePatterns: [
      new URL('https://assets.example.com/account123/**?v=1234'),
    ],
  },
}
```

### Any search params

To allow any search parameter, use the remote pattern object, omitting the `search` key.

```js filename="next.config.js"
module.exports = {
  images: {
    remotePatterns: [
      {
        protocol: 'https',
        hostname: 'assets.example.com',
        port: '',
        pathname: '/account123/**',
      },
    ],
  },
}
```

### Fixing older versions of Next.js

<details>
  <summary>Using Next.js prior to 15.3.0?</summary>
  
Older versions of Next.js can configure `images.remotePatterns` using the object:

```js filename="next.config.js"
module.exports = {
  images: {
    remotePatterns: [
      {
        protocol: 'https',
        hostname: 'assets.example.com',
        port: '',
        pathname: '/account123/**',
        search: '',
      },
    ],
  },
}
```

</details>

<details>
  <summary>Using Next.js prior to 12.3.0?</summary>
  
Older versions of Next.js can configure `images.domains` instead:

```js filename="next.config.js"
module.exports = {
  images: {
    domains: ['assets.example.com'],
  },
}
```

</details>

## Useful Links

- [Image Optimization Documentation](/docs/pages/api-reference/components/image)
- [Remote Patterns Documentation](/docs/pages/api-reference/components/image#remotepatterns)