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DocumentationDocs ThemeTheme Configuration

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: <b>Project</b>
}

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.

OptionTypeDescription
docsRepositoryBasestringURL 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:

theme.config.jsx
export default {
  docsRepositoryBase: 'https://github.com/shuding/nextra/tree/main/docs'
}

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

Head Tags

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

OptionTypeDescription
headReact.ReactNode | React.FCComponent 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:

theme.config.jsx
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:

theme.config.jsx
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.

OptionTypeDescription
darkModebooleanShow or hide the dark mode toggle button
nextThemesobjectConfiguration for the next-themes package

Theme Color

You can adjust the theme color of the website by setting primary hue and saturation values for light and dark themes.

OptionTypeDescription
color.huenumber | { dark: number; light: number }The hue of the primary theme color
color.saturationnumber | { dark: number; light: number }The saturation of the primary theme color
backgroundColor.darkstring in format RRR,GGG,BBBBackground color for light theme
backgroundColor.lightstring in format RRR,GGG,BBBBackground color for dark theme

Try it out for this website:

HueSaturation

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

OptionTypeDescription
logoReact.ReactNode | React.FCLogo of the website
logoLinkboolean | stringLink of the logo
Customized Logo
theme.config.jsx
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>
    </>
  )
}

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

OptionTypeDescription
project.linkstringURL of the project homepage
project.iconReact.ReactNode | React.FCIcon 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:

Project link
theme.config.jsx
export default {
  project: {
    link: 'https://gitlab.com/inkscape/inkscape',
    icon: (
      <svg width="24" height="24" fill="currentColor" viewBox="0 0 256 256">
        <path 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" />
      </svg>
    )
  }
}

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

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

OptionTypeDescription
chat.linkstringURL of the chat link
chat.iconReact.ReactNode | React.FCIcon 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:

theme.config.jsx
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.

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

OptionTypeDescription
search.componentReact.ReactNode |
React.FC<{ className?: string; directories: Item[] }>
search.emptyResultReact.ReactNode | React.FCNot found text
search.loadingReact.ReactNode | React.FCLoading text
search.errorstring | (() => string)Error text
search.placeholderstring | (() => string)Placeholder text

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

OptionTypeDescription
banner.dismissiblebooleanClosable banner or not
banner.keystringStorage key to keep the banner state (dismissed or not)
banner.contentReact.ReactNode | React.FCContent of the banner

A banner can be dismissed. By default banner.key will be "nextra-banner" and it’s used by localStorage 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:

Banner
theme.config.jsx
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.

OptionTypeDescription
navbar.componentReact.ReactNode | React.FC<NavBarProps>Navbar component
navbar.extraContentReact.ReactNode | React.FCDisplay extra content after last icon
OptionTypeDescription
sidebar.defaultMenuCollapseLevelnumberSpecifies the folder level at which the menu on the left is collapsed by default. Defaults to 2
sidebar.autoCollapsebooleanIf true, automatically collapse inactive folders above defaultMenuCollapseLevel
sidebar.toggleButtonbooleanHide/show sidebar toggle button. Defaults to false

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.

If sidebar.autoCollapse is set to true, then all folders that do not contain an active/focused route will automatically collapse up to the level set by sidebar.defaultMenuCollapseLevel. e.g. if defaultMenuCollapseLevel is 2, then top-level folders will not auto-collapse.

Customize Sidebar Content

Together with the Separators item, you can customize how the sidebar content is rendered by using JSX elements:

_meta.jsx
export default {
  index: 'Intro',
  '--': {
    type: 'separator',
    title: (
      <div className="flex items-center gap-2">
        <MyLogo />
        {children}
      </div>
    )
  },
  frameworks: 'JS Frameworks & Libs',
  about: 'About'
}
Customized Sidebar

Customize Sidebar with Frontmatter

In addition, you can customize the sidebar title using the sidebarTitle property in your front matter:

pages/getting-started.mdx
---
sidebarTitle: Getting Started 🚀
---

The priority of the sidebar title is as follows:

  1. title property from _meta.js file
  2. Front matter sidebarTitle
  3. Front matter title
  4. Filename of the page formatted with Title

Content

MDX Components

Provide custom MDX components to render the content. For example, you can use a custom pre component to render code blocks.

OptionTypeDescription
componentsRecord<string, React.FC>Custom MDX components

Writing Direction

The default writing direction of the website.

OptionTypeDescription
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.

OptionTypeDescription
mainReact.FC<{ children: React.ReactNode }>Component of main content

TOC Sidebar

Table of Contents

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

OptionTypeDescription
toc.componentReact.ReactNode | React.FC<TOCProps>Custom renderer of the TOC
toc.extraContentReact.ReactNode | React.FCDisplay extra content below the TOC content
toc.floatbooleanFloat the TOC next to the content
toc.titleReact.ReactNode | React.FCTitle of the TOC sidebar. By default it’s “On This Page”
toc.backToTopReact.ReactNode | React.FCText of Scroll to top button

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.

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

OptionTypeDescription
editLink.contentReact.ReactNode | React.FCContent of the edit link
editLink.componentReact.FC<{ children: React.ReactNode; className?: string; filePath?: string }> | nullCustomized edit link component

To disable it, you can set editLink.component to null.

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.

OptionTypeDescription
feedback.contentReact.ReactNode | React.FCContent of the feedback button
feedback.labelsstringLabels that can be added to the new created GitHub issue
feedback.useLink() => stringCustom 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

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

OptionTypeDescription
navigationboolean | objectEnable or disable navigation link
navigation.prevbooleanEnable or disable the previous page link
navigation.nextbooleanEnable or disable the next page link
Navigation
theme.config.jsx
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.

OptionTypeDescription
gitTimestampReact.ReactNode | React.FC<{ timestamp: Date }>Component to render the last updated info

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

OptionTypeDescription
footer.contentReact.ReactNode | React.FCContent of the footer component
footer.componentReact.ReactNode | React.FC<{ menu: boolean }>Customized footer component

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

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

Theme Switch

OptionTypeDescription
themeSwitch.componentReact.ReactNode |
React.FC<{ lite?: boolean, className?: string }>
Component to render the theme switch
themeSwitch.useOptionsThemeOptions | () => ThemeOptionsOptions in the theme switch

Options

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

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

Not Found Page

Options to configure report of broken link on not found page.

OptionTypeDescription
notFound.contentReactNode | FCDefault: Submit an issue about broken link →
notFound.labelsstringDefault: bug

I18n

Options to configure the language dropdown for the i18n docs website.

OptionTypeDescription
i18n[number].localestringLocale from i18n.locales field in next.config file
i18n[number].namestringLocale name in dropdown
i18n[number].direction'ltr' | 'rtl'Locale writing direction. Default: ltr

Favicon Glyph

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.

OptionTypeDescription
faviconGlyphstringThe glyph to use as the favicon