Theme Configuration

The theme is configured with the theme.config.jsx file. It should export an object that contains your configurations, for example:

theme.config.jsx

export default {
  project: {
    link: 'https://github.com/shuding/nextra',
  },
  logo: <strong>Project</strong>,
}

Detailed information for each option is listed below.

Global

Docs Repository

Set the repository URL of the documentation. It’s used to generate the “Edit this page” link and the “Feedback” link.

Option	Type	Description
docsRepositoryBase	string	URL of the documentation repository.

Specify a Path

If the documentation is inside a monorepo, a subfolder, or a different branch of the repository, you can simply set the docsRepositoryBase to the root path of the pages/ folder of your docs. For example:

export default {
  docsRepositoryBase: 'https://github.com/shuding/nextra/blob/core/docs/pages',
}

Then Nextra will automatically generate the correct file path for all pages.

SEO Options

You can configure SEO related settings via the useNextSeoProps option. The useNextSeoProps function returns the props that will be passed to the Next SEO (opens in a new tab) component.

It is also a hook, so you can use APIs like useRouter inside to return values conditionally.

Option	Type	Description
useNextSeoProps	() => NextSeoProps	A React hook function that returns options for Next SEO.

For example, we can have all pages rendering the same suffix for <title>:

export default {
  useNextSeoProps() {
    return {
      titleTemplate: '%s – SWR'
    }
  }
}

The %s is a placeholder (opens in a new tab) that will be replaced by the page title.

You can also return it conditionally to avoid adding the suffix to the homepage:

export default {
  useNextSeoProps() {
    const { asPath } = useRouter()
    if (asPath !== '/') {
      return {
        titleTemplate: '%s – SWR'
      }
    }
  }
}

Head Tags

Configure the <head> tags of the website. You can add meta tags, title, favicon, etc.

Option	Type	Description
head	React.ReactNode \| React.FC	Component that renders the `<head>` content.

Static head tags

If you have only static head tags, it’s easy to directly put them in head. For example:

export default {
  head: (
    <>
      <meta name="viewport" content="width=device-width, initial-scale=1.0" />
      <meta property="og:title" content="Nextra" />
      <meta property="og:description" content="The next site builder" />
    </>
  ),
}

Dynamic tags based on page

You can also use a function component as head to dynamically generate the head tags based on the current page’s front matter. For example:

import { useRouter } from 'next/router'
import { useConfig } from 'nextra-theme-docs'
 
export default {
  head: () => {
    const { asPath, defaultLocale, locale } = useRouter()
    const { frontMatter } = useConfig()
    const url =
      'https://my-app.com' +
      (defaultLocale === locale ? asPath : `/${locale}${asPath}`)
 
    return <>
      <meta property="og:url" content={url} />
      <meta property="og:title" content={frontMatter.title || 'Nextra'} />
      <meta property="og:description" content={frontMatter.description || 'The next site builder'} />
    </>
  },
}

You can refer to the useConfig API section for more information about the useConfig hook and the frontMatter object.

Dark Mode and Themes

Customize the theme behavior of the website.

Option	Type	Description
darkMode	boolean	Show or hide the dark mode toggle button.
nextThemes	object	Configuration for the next-themes (opens in a new tab) package.

Theme Color

You can adjust the theme color of the website by setting a primary hue value to dark or light themes.

Option	Type	Description
primaryHue	number \| { dark: number; light: number }	The hue of the primary theme color.

Try it out for this website:

Navbar

Logo

The logo of the website rendered on the navbar. It can be a React node or a function component.

Option	Type	Description
logo	React.ReactNode \| React.FC	Logo of the website.
logoLink	boolean \| string	Link of the logo.

Live example on StackBlitz ↗

export default {
  logo: (
    <>
      <svg width="24" height="24" viewBox="0 0 24 24">
        <path
          fill="currentColor"
          d="M14.683 14.828a4.055 4.055 0 0 1-1.272.858a4.002 4.002 0 0 1-4.875-1.45l-1.658 1.119a6.063 6.063 0 0 0 1.621 1.62a5.963 5.963 0 0 0 2.148.903a6.035 6.035 0 0 0 3.542-.35a6.048 6.048 0 0 0 1.907-1.284c.272-.271.52-.571.734-.889l-1.658-1.119a4.147 4.147 0 0 1-.489.592z M12 2C6.486 2 2 6.486 2 12s4.486 10 10 10s10-4.486 10-10S17.514 2 12 2zm0 2c2.953 0 5.531 1.613 6.918 4H5.082C6.469 5.613 9.047 4 12 4zm0 16c-4.411 0-8-3.589-8-8c0-.691.098-1.359.264-2H5v1a2 2 0 0 0 2 2h2a2 2 0 0 0 2-2h2a2 2 0 0 0 2 2h2a2 2 0 0 0 2-2v-1h.736c.166.641.264 1.309.264 2c0 4.411-3.589 8-8 8z"
        />
      </svg>
      <span style={{ marginLeft: '.4em', fontWeight: 800 }}>
        My Cool Project
      </span>
    </>
  ),
}

Project Link

Show a button that links to your project’s homepage on the navbar. By default, it links to Nextra’s GitHub repository.

Option	Type	Description
project.link	string	URL of the project homepage.
project.icon	React.ReactNode \| React.FC	Icon or element of the project link.

You can configure project.link and project.icon to customize the project link, for example make it link to your GitLab repository:

export default {
  project: {
    link: 'https://gitlab.com/inkscape/inkscape',
    icon: <svg width="24" height="24" viewBox="0 0 256 256"><path fill="currentColor" d="m231.9 169.8l-94.8 65.6a15.7 15.7 0 0 1-18.2 0l-94.8-65.6a16.1 16.1 0 0 1-6.4-17.3L45 50a12 12 0 0 1 22.9-1.1L88.5 104h79l20.6-55.1A12 12 0 0 1 211 50l27.3 102.5a16.1 16.1 0 0 1-6.4 17.3Z"></path></svg>,
  },
}

If icon is missing, it will be a GitHub icon (opens in a new tab) by default.

Chat Link

Show a button that links to your project’s forum or other social media on the navbar.

Option	Type	Description
chat.link	string	URL of the chat link.
chat.icon	React.ReactNode \| React.FC	Icon or element of the chat link.

You can configure chat.link and chat.icon to customize the chat link, for example make it link to your Twitter account:

export default {
  chat: {
    link: 'https://twitter.com/shuding_',
    icon: <svg width="24" height="24" viewBox="0 0 248 204"><path fill="currentColor" d="M221.95 51.29c.15 2.17.15 4.34.15 6.53 0 66.73-50.8 143.69-143.69 143.69v-.04c-27.44.04-54.31-7.82-77.41-22.64 3.99.48 8 .72 12.02.73 22.74.02 44.83-7.61 62.72-21.66-21.61-.41-40.56-14.5-47.18-35.07a50.338 50.338 0 0 0 22.8-.87C27.8 117.2 10.85 96.5 10.85 72.46v-.64a50.18 50.18 0 0 0 22.92 6.32C11.58 63.31 4.74 33.79 18.14 10.71a143.333 143.333 0 0 0 104.08 52.76 50.532 50.532 0 0 1 14.61-48.25c20.34-19.12 52.33-18.14 71.45 2.19 11.31-2.23 22.15-6.38 32.07-12.26a50.69 50.69 0 0 1-22.2 27.93c10.01-1.18 19.79-3.86 29-7.95a102.594 102.594 0 0 1-25.2 26.16z"/></svg>,
  },
}

If icon is missing, it will be a Discord icon by default.

Menu and Custom Links

Check out Page Configuration to learn how to add custom menus or links to the navbar.

Search

Option	Type	Description
search.component	React.ReactNode \| React.FC<{ className?: string directories: Item[] }>
search.emptyResult	React.ReactNode \| React.FC	Not found text
search.loading	string \| (() => string)	Loading text
search.error	string \| (() => string)	Error text
search.placeholder	string \| (() => string)	Placeholder text

Banner

Show a dismissible banner on the top of the website. It can be used to show a warning or a notice.

Option	Type	Description
banner.dismissible	boolean	Closable banner or not.
banner.key	string	Storage key to keep the banner state (dismissed or not).
banner.text	React.ReactNode \| React.FC	Text of the banner.

Banner key

A banner can be dismissed. By default banner.key will be "nextra-banner" and it’s used by localStorage (opens in a new tab) to keep the banner state (dismissed or not) on the client.

If you have updated your banner text, you should change the key to make sure the banner is shown again. The best practice is to always use a descriptive key for the current text, for example:

export default {
  banner: {
    key: '2.0-release',
    text: <a href="https://nextra.site" target="_blank">
      🎉 Nextra 2.0 is released. Read more →
    </a>,
  },
}

Customize the Navbar

Customize the entire navbar component.

Option	Type	Description
navbar.component	React.ReactNode \| React.FC<NavBarProps>	Navbar component.
navbar.extraContent	React.ReactNode \| React.FC	Display extra content after last icon.

Sidebar

Option	Type	Description
sidebar.defaultMenuCollapseLevel	number	Specifies the folder level at which the menu on the left is collapsed by default. Defaults to 2.
sidebar.titleComponent	React.ReactNode \| React.FC<{ type: string; title: string; route: string; }>	Custom renderer for sidebar titles.
sidebar.toggleButton	boolean	Hide/show sidebar toggle button. Defaults to `false`.

Menu Collapse Level

By default, the sidebar menu is collapsed at level 2. You can change it by setting sidebar.defaultMenuCollapseLevel to a different number. For example, when set to 1, every folder will be collapsed by default and when set to Infinity, all nested folders will be expanded by default.

Customize sidebar content

Together with the Separators item, you can customize how the sidebar content is rendered by using the sidebar.titleComponent option:

Live example on StackBlitz ↗

export default {
  sidebar: {
    titleComponent({ title, type }) {
      if (type === 'separator') {
        return (
          <div style={{ background: 'cyan', textAlign: 'center' }}>{title}</div>
        )
      }
      if (title === 'About') {
        return <>❓ {title}</>
      }
      return <>👉 {title}</>
    }
  }
}

Content

MDX Components

Provide custom MDX components (opens in a new tab) to render the content. For example, you can use a custom pre component to render code blocks.

Option	Type	Description
components	Record<string, React.FC>	Custom MDX components.

Writing Direction

The default writing direction of the website.

Option	Type	Description
direction	"ltr" \| "rtl"	Default writing direction.

Main Content

Render top and/or bottom content of main area of the page. It can be used to render a comment section, a newsletter form, or any other type of content.

Option	Type	Description
main	React.FC<{ children: React.ReactNode }>	Component of main content.

TOC Sidebar

Show a table of contents on the right side of the page. It’s useful for navigating between headings.

Option	Type	Description
toc.component	React.ReactNode \| React.FC<TOCProps>	Custom renderer of the TOC.
toc.extraContent	React.ReactNode \| React.FC	Display extra content below the TOC content.
toc.float	boolean	Float the TOC next to the content.
toc.title	React.ReactNode \| React.FC	Title of the TOC sidebar. By default it’s “On This Page”.

Floating TOC

toc.float is enabled by default. When enabled, the TOC will be displayed on the right side of the page and it will be sticky when scrolling. If it’s disabled, the TOC will be displayed directly on the page sidebar.

Edit Link

Show an “Edit this page” link on the page that points to the file URL on GitHub (or other places).

Option	Type	Description
editLink.text	React.ReactNode \| React.FC	Content of the default edit link.
editLink.component	React.FC<{ children: React.ReactNode className?: string filePath?: string }>	Customized edit link component.

Feedback Link

The built-in feedback link provides a way for users to submit feedback about the documentation. By default, it’s a link that points to the issue creation form of the docs repository, with the current website title prefilled: example (opens in a new tab).

Option	Type	Description
feedback.content	React.ReactNode \| React.FC	Content of the feedback button.
feedback.labels	string	Labels that can be added to the new created GitHub issue.
feedback.useLink	() => string	Custom link, by default, will open an issue in the repository set in `docsRepositoryBase`.

To disable it, you can set feedback.content to null.

End of Page

Navigation

Show previous and next page links on the bottom of the content. It’s useful for navigating between pages.

Option	Type	Description
navigation	boolean \| object	Enable or disable navigation link.
navigation.prev	boolean	Enable or disable the previous page link.
navigation.next	boolean	Enable or disable the next page link.

export default {
  navigation: {
    prev: true,
    next: true
  }
}

The above is also equivalent to navigation: true.

Last Updated Date

Show the last updated date of each page. It’s useful for showing the freshness of the content.

Option	Type	Description
gitTimestamp	React.ReactNode \| React.FC<{ timestamp: Date }>	Component to render the last updated info.

Footer

The footer area of the website. You can either specify some content for the default footer, or fully customize it with a custom component.

Option	Type	Description
footer.text	React.ReactNode \| React.FC	Content of the default footer component.
footer.component	React.ReactNode \| React.FC<{ menu: boolean }>	Customized footer component.

Copyright information

You can add some simple content, such as copyright information to the default footer:

export default {
  footer: {
    text: <span>
      MIT {new Date().getFullYear()} © <a href="https://nextra.site" target="_blank">Nextra</a>.
    </span>,
  }
}

Theme Switch

Option	Type	Description
themeSwitch.component	React.ReactNode \| React.FC<{ lite?: boolean, className?: string }>	Component to render the theme switch.
themeSwitch.useOptions	ThemeOptions \| () => ThemeOptions	Options in the theme switch.

Options

You are able to customize the option names for localization or other purposes:

export default {
  themeSwitch: {
    useOptions() {
      return {
        light: 'Light',
        dark: 'Dark',
        system: 'System'
      }
    }
  }
}

Error Pages

404 - Not Found

500 - Internal Server Error

Favicon Glyph (Experimental)

This isn’t supported by all browsers, but it’s a nice way to customize the favicon of the website simply by using an emoji or character.

Option	Type	Description
faviconGlyph	string	The glyph to use as the favicon.

Page Configuration Built-ins