> For the complete documentation index, see [llms.txt](https://book.hajoeun.dev/friendly-next-js/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://book.hajoeun.dev/friendly-next-js/next.js-1/undefined-5.md).

# 메타데이터

Next.js에서는 메타데이터(Metadata)를 설정하는 두 가지 방법이 있습니다. 설정 기반 메타데이터(Config-based Metadata)와 파일 기반 메타데이터(File-based Metadata)가 그 방법입니다. 이번 강의에서는 설정 기반 메타데이터를 중심으로 다룹니다.

설정 기반 메타데이터 방식에는 정적 방식(Static Metadata)과 동적 방식(Dynamic Metadata)이 있습니다.

### 정적 메타데이터

정적 방식은 Metadata 객체를 정의하는 방식입니다.

{% code title="layout.tsx 혹은 page.tsx" %}

```tsx
import type { Metadata } from 'next'
 
export const metadata: Metadata = {
  title: '...',
  description: '...',
}
 
export default function Page() {}
```

{% endcode %}

### 동적 메타데이터

동적 방식은 `generateMetadata`라는 함수를 이용해 동적으로 Metadata 객체를 생성하는 방식입니다.

{% code title="app/blog/\[id]/page.tsx" %}

```tsx
import type { Metadata, ResolvingMetadata } from 'next'
 
type Props = {
  params: { id: string }
  searchParams: { [key: string]: string | string[] | undefined }
}
 
export async function generateMetadata(
  { params, searchParams }: Props,
  parent?: ResolvingMetadata
): Promise<Metadata> {
  const id = params.id
  
  const post = await fetch(`https://.../${id}`).then((res) => res.json())
  
  const previousImages = (await parent).openGraph?.images || []
 
  return {
    title: post.title,
    openGraph: {
      images: ['/some-specific-page-image.jpg', ...previousImages],
    },
  }
}
 
export default function Page({ params, searchParams }: Props) {}
```

{% endcode %}

#### 참고 자료

* <https://nextjs.org/docs/app/building-your-application/optimizing/metadata>


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