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Frontmatter Reference

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You can customize individual Markdown and MDX pages in Starlight by setting values in their frontmatter. For example, a regular page might set title and description fields:

src/content/docs/example.md
---
title: About this project
description: Learn more about the project I’m working on.
---
Welcome to the about page!

Frontmatter fields

title (required)

type: string

You must provide a title for every page. This will be displayed at the top of the page, in browser tabs, and in page metadata.

description

type: string

The page description is used for page metadata and will be picked up by search engines and in social media previews.

slug

type: string

Override the slug of the page. See “Defining custom slugs” in the Astro docs for more details.

editUrl

type: string | boolean

Overrides the global editLink config. Set to false to disable the “Edit page” link for a specific page or provide an alternative URL where the content of this page is editable.

type: HeadConfig[]

You can add additional tags to your page’s <head> using the head frontmatter field. This means you can add custom styles, metadata or other tags to a single page. Similar to the global head option.

src/content/docs/example.md
---
title: About us
head:
# Use a custom <title> tag
- tag: title
content: Custom about title
---

tableOfContents

type: false | { minHeadingLevel?: number; maxHeadingLevel?: number; }

Overrides the global tableOfContents config. Customize the heading levels to be included or set to false to hide the table of contents on this page.

src/content/docs/example.md
---
title: Page with only H2s in the table of contents
tableOfContents:
minHeadingLevel: 2
maxHeadingLevel: 2
---
src/content/docs/example.md
---
title: Page with no table of contents
tableOfContents: false
---

template

type: 'doc' | 'splash'
default: 'doc'

Set the layout template for this page. Pages use the 'doc' layout by default. Set to 'splash' to use a wider layout without any sidebars designed for landing pages.

hero

type: HeroConfig

Add a hero component to the top of this page. Works well with template: splash.

For example, this config shows some common options, including loading an image from your repository.

src/content/docs/example.md
---
title: My Home Page
template: splash
hero:
title: 'My Project: Stellar Stuff Sooner'
tagline: Take your stuff to the moon and back in the blink of an eye.
image:
alt: A glittering, brightly colored logo
file: ~/assets/logo.png
actions:
- text: Tell me more
link: /getting-started/
icon: right-arrow
variant: primary
- text: View on GitHub
link: https://github.com/astronaut/my-project
icon: external
---

You can display different versions of the hero image in light and dark modes.

src/content/docs/example.md
---
hero:
image:
alt: A glittering, brightly colored logo
dark: ~/assets/logo-dark.png
light: ~/assets/logo-light.png
---

HeroConfig

interface HeroConfig {
title?: string;
tagline?: string;
image?:
| {
// Relative path to an image in your repository.
file: string;
// Alt text to make the image accessible to assistive technology
alt?: string;
}
| {
// Relative path to an image in your repository to be used for dark mode.
dark: string;
// Relative path to an image in your repository to be used for light mode.
light: string;
// Alt text to make the image accessible to assistive technology
alt?: string;
}
| {
// Raw HTML to use in the image slot.
// Could be a custom `<img>` tag or inline `<svg>`.
html: string;
};
actions?: Array<{
text: string;
link: string;
variant: 'primary' | 'secondary' | 'minimal';
icon: string;
}>;
}

type: { content: string }

Displays an announcement banner at the top of this page.

The content value can include HTML for links or other content. For example, this page displays a banner including a link to example.com.

src/content/docs/example.md
---
title: Page with a banner
banner:
content: |
We just launched something cool!
<a href="https://example.com">Check it out</a>
---

lastUpdated

type: Date | boolean

Overrides the global lastUpdated option. If a date is specified, it must be a valid YAML timestamp and will override the date stored in Git history for this page.

src/content/docs/example.md
---
title: Page with a custom last update date
lastUpdated: 2022-08-09
---

prev

type: boolean | string | { link?: string; label?: string }

Overrides the global pagination option. If a string is specified, the generated link text will be replaced and if an object is specified, both the link and the text will be overridden.

src/content/docs/example.md
---
# Hide the previous page link
prev: false
---
src/content/docs/example.md
---
# Override the previous page link text
prev: Continue the tutorial
---
src/content/docs/example.md
---
# Override both the previous page link and text
prev:
link: /unrelated-page/
label: Check out this other page
---

next

type: boolean | string | { link?: string; label?: string }

Same as prev but for the next page link.

src/content/docs/example.md
---
# Hide the next page link
next: false
---

pagefind

type: boolean
default: true

Set whether this page should be included in the Pagefind search index. Set to false to exclude a page from search results:

src/content/docs/example.md
---
# Hide this page from the search index
pagefind: false
---

type: SidebarConfig

Control how this page is displayed in the sidebar, when using an autogenerated link group.

SidebarConfig

interface SidebarConfig {
label?: string;
order?: number;
hidden?: boolean;
badge?: string | BadgeConfig;
attrs?: Record<string, string | number | boolean | undefined>;
}

label

type: string
default: the page title

Set the label for this page in the sidebar when displayed in an autogenerated group of links.

src/content/docs/example.md
---
title: About this project
sidebar:
label: About
---

order

type: number

Control the order of this page when sorting an autogenerated group of links. Lower numbers are displayed higher up in the link group.

src/content/docs/example.md
---
title: Page to display first
sidebar:
order: 1
---

hidden

type: boolean
default: false

Prevents this page from being included in an autogenerated sidebar group.

src/content/docs/example.md
---
title: Page to hide from autogenerated sidebar
sidebar:
hidden: true
---

badge

type: string | BadgeConfig

Add a badge to the page in the sidebar when displayed in an autogenerated group of links. When using a string, the badge will be displayed with a default accent color. Optionally, pass a BadgeConfig object with text and variant fields to customize the badge.

src/content/docs/example.md
---
title: Page with a badge
sidebar:
# Uses the default variant matching your site’s accent color
badge: New
---
src/content/docs/example.md
---
title: Page with a badge
sidebar:
badge:
text: Experimental
variant: caution
---

attrs

type: Record<string, string | number | boolean | undefined>

HTML attributes to add to the page link in the sidebar when displayed in an autogenerated group of links.

src/content/docs/example.md
---
title: Page opening in a new tab
sidebar:
# Opens the page in a new tab
attrs:
target: _blank
---

Customize frontmatter schema

The frontmatter schema for Starlight’s docs content collection is configured in src/content/config.ts using the docsSchema() helper:

src/content/config.ts
import { defineCollection } from 'astro:content';
import { docsSchema } from '@astrojs/starlight/schema';
export const collections = {
docs: defineCollection({ schema: docsSchema() }),
};

Learn more about content collection schemas in “Defining a collection schema” in the Astro docs.

docsSchema() takes the following options:

extend

type: Zod schema or function that returns a Zod schema
default: z.object({})

Extend Starlight’s schema with additional fields by setting extend in the docsSchema() options. The value should be a Zod schema.

In the following example, we provide a stricter type for description to make it required and add a new optional category field:

src/content/config.ts
import { defineCollection, z } from 'astro:content';
import { docsSchema } from '@astrojs/starlight/schema';
export const collections = {
docs: defineCollection({
schema: docsSchema({
extend: z.object({
// Make a built-in field required instead of optional.
description: z.string(),
// Add a new field to the schema.
category: z.enum(['tutorial', 'guide', 'reference']).optional(),
}),
}),
}),
};

To take advantage of the Astro image() helper, use a function that returns your schema extension:

src/content/config.ts
import { defineCollection, z } from 'astro:content';
import { docsSchema } from '@astrojs/starlight/schema';
export const collections = {
docs: defineCollection({
schema: docsSchema({
extend: ({ image }) => {
return z.object({
// Add a field that must resolve to a local image.
cover: image(),
});
},
}),
}),
};