Frontmatter and properties
Frontmatter is a block of YAML or JSON (usually YAML) at the top of a Markdown file which defines arbitrary properties.
There is no global specification for what these properties are, it can be anything the Markdown consumer or client needs.
md
---
title: A Frontmatter Story
date: 09-11-2024
author: Biggie Cheese 🐀
---
# A Tale of Frontmatter
The stuff in those ---s above is frontmatter. This is normal content.Frontmatter in Obsidian (Properties)
For Obsidian, these are Properties.
Properties are always in YAML format.
Like Frontmatter in general, these can be anything you want.
However, there are default properties that Obsidian recognizes and uses.
Default properties
tags and aliases are both lists of strings. See Tags - Obsidian Help See Aliases - Obsidian Help
cssclasses can be used to apply styling per-note. See CSS snippets - Obsidian Help
Outside of Obsidian
For Frontmatter usage in GitHub articles, see their respective documentation.