Frontmatter Properties

Frontmatter properties are the YAML block at the top of each Markdown file, between --- lines. Astro calls them frontmatter; Obsidian calls them properties — same thing. Astro and your theme read these values for title, dates, SEO, images, and drafts.

Default template

Creating a note with Ctrl/Cmd + N (with Astro Composer configured) may insert a template like:

---
title: "{{title}}"
date: {{date}}
description: ""
tags: []
image: ""
imageAlt: ""
imageOG: false
hideCoverImage: false
hideTOC: false
targetKeyword: ""
draft: true
---

Placeholders depend on your content type and Astro Composer settings.

Fields

Field	Type	Notes
`title`	string	Page title and often the `<title>` tag.
`date`	string	Often `YYYY-MM-DD`; used for sorting, RSS, and display.
`description`	string	Meta description; aim for ~150–160 characters for SEO.
`tags`	string[]	e.g. `tags: [astro, tutorial]`
`image`	string	Cover image URL or vault-relative path.
`imageAlt`	string	Alt text for the cover image.
`imageOG`	boolean	If `true`, use cover image for Open Graph / social previews.
`hideCoverImage`	boolean	Hide cover on the page while still using it for OG/SEO if configured.
`hideTOC`	boolean	Hide table of contents where the theme supports it.
`targetKeyword`	string	Primary keyword for the SEO plugin.
`draft`	boolean	`true` keeps content out of production builds when the theme respects it.

Normalize properties

Astro Composer: Standardize Properties (command palette) can align fields across files.

Wikilinks

Astro Composer: Convert Wikilinks to Astro rewrites [[links]] to Markdown Astro can resolve.

Date format

Default is often YYYY-MM-DD. Adjust in Settings → Astro Composer if your theme expects another format.