---
title: Head
description: Add custom elements to the `head` of your page with the built-in Head component.
---
We expose a built-in component for appending elements to the `head` of the page:
```jsx
import Head from 'next/head'
function IndexPage() {
return (
My page title
Hello world!
)
}
export default IndexPage
```
## Avoid duplicated tags
To avoid duplicate tags in your `head` you can use the `key` property, which will make sure the tag is only rendered once, as in the following example:
```jsx
import Head from 'next/head'
function IndexPage() {
return (
My page title
Hello world!
)
}
export default IndexPage
```
In this case only the second `` is rendered. `meta` tags with duplicate `key` attributes are automatically handled.
> **Good to know**: `` and `<base>` tags are automatically checked for duplicates by Next.js, so using key is not necessary for these tags.
> The contents of `head` get cleared upon unmounting the component, so make sure each page completely defines what it needs in `head`, without making assumptions about what other pages added.
## Use minimal nesting
`title`, `meta` or any other elements (e.g. `script`) need to be contained as **direct** children of the `Head` element,
or wrapped into maximum one level of `<React.Fragment>` or arrays—otherwise the tags won't be correctly picked up on client-side navigations.
## Use `next/script` for scripts
We recommend using [`next/script`](/docs/pages/guides/scripts) in your component instead of manually creating a `<script>` in `next/head`.
## No `html` or `body` tags
You **cannot** use `<Head>` to set attributes on `<html>` or `<body>` tags. This will result in an `next-head-count is missing` error. `next/head` can only handle tags inside the HTML `<head>` tag.