Obsidian Markdown

---
name: obsidian-markdown
description: >-
  Writes Obsidian Flavored Markdown: wikilinks, embeds, callouts, properties and frontmatter,
  tags, block references and comments. Use when the user is creating or editing .md notes in
  Obsidian, or mentions wikilinks, callouts, embeds, frontmatter properties or Obsidian notes. Not
  for .base database views (use obsidian-bases).
---

# Obsidian Flavored Markdown Skill

Create and edit valid Obsidian Flavored Markdown. Obsidian extends CommonMark and GFM with wikilinks, embeds, callouts, properties, comments, and other syntax. This skill covers only Obsidian-specific extensions -- standard Markdown (headings, bold, italic, lists, quotes, code blocks, tables) is assumed knowledge.

## Workflow: Creating an Obsidian Note

1. **Add frontmatter** with properties (title, tags, aliases) at the top of the file. See [PROPERTIES.md](references/PROPERTIES.md) for all property types.
2. **Write content** using standard Markdown for structure, plus Obsidian-specific syntax below.
3. **Link related notes** using wikilinks (`[[Note]]`) for internal vault connections, or standard Markdown links for external URLs.
4. **Embed content** from other notes, images, or PDFs using the `![[embed]]` syntax. See [EMBEDS.md](references/EMBEDS.md) for all embed types.
5. **Add callouts** for highlighted information using `> [!type]` syntax. See [CALLOUTS.md](references/CALLOUTS.md) for all callout types.
6. **Verify** the note renders correctly in Obsidian's reading view.

> When choosing between wikilinks and Markdown links: use `[[wikilinks]]` for notes within the vault (Obsidian tracks renames automatically) and `[text](url)` for external URLs only.

## Internal Links (Wikilinks)

```markdown
[[Note Name]]                          Link to note
[[Note Name|Display Text]]             Custom display text
[[Note Name#Heading]]                  Link to heading
[[Note Name#^block-id]]                Link to block
[[#Heading in same note]]              Same-note heading link
```

Define a block ID by appending `^block-id` to any paragraph:

```markdown
This paragraph can be linked to. ^my-block-id
```

For lists and quotes, place the block ID on a separate line after the block:

```markdown
> A quote block

^quote-id
```

## Embeds

Prefix any wikilink with `!` to embed its content inline:

```markdown
![[Note Name]]                         Embed full note
![[Note Name#Heading]]                 Embed section
![[image.png]]                         Embed image
![[image.png|300]]                     Embed image with width
![[document.pdf#page=3]]               Embed PDF page
```

See [EMBEDS.md](references/EMBEDS.md) for audio, video, search embeds, and external images.

## Callouts

```markdown
> [!note]
> Basic callout.

> [!warning] Custom Title
> Callout with a custom title.

> [!faq]- Collapsed by default
> Foldable callout (- collapsed, + expanded).
```

Common types: `note`, `tip`, `warning`, `info`, `example`, `quote`, `bug`, `danger`, `success`, `failure`, `question`, `abstract`, `todo`.

See [CALLOUTS.md](references/CALLOUTS.md) for the full list with aliases, nesting, and custom CSS callouts.

## Properties (Frontmatter)

```yaml
---
title: My Note
date: 2024-01-15
tags:
  - project
  - active
aliases:
  - Alternative Name
cssclasses:
  - custom-class
---
```

Default properties: `tags` (searchable labels), `aliases` (alternative note names for link suggestions), `cssclasses` (CSS classes for styling).

See [PROPERTIES.md](references/PROPERTIES.md) for all property types, tag syntax rules, and advanced usage.

## Tags

```markdown
#tag                    Inline tag
#nested/tag             Nested tag with hierarchy
```

Tags can contain letters, numbers (not first character), underscores, hyphens, and forward slashes. Tags can also be defined in frontmatter under the `tags` property.

## Comments

```markdown
This is visible %%but this is hidden%% text.

%%
This entire block is hidden in reading view.
%%
```

## Obsidian-Specific Formatting

```markdown
==Highlighted text==                   Highlight syntax
```

## Math (LaTeX)

```markdown
Inline: $e^{i\pi} + 1 = 0$

Block:
$$
\frac{a}{b} = c
$$
```

## Diagrams (Mermaid)

````markdown
```mermaid
graph TD
    A[Start] --> B{Decision}
    B -->|Yes| C[Do this]
    B -->|No| D[Do that]
```
````

To link Mermaid nodes to Obsidian notes, add `class NodeName internal-link;`.

## Footnotes

```markdown
Text with a footnote[^1].

[^1]: Footnote content.

Inline footnote.^[This is inline.]
```

## Complete Example

````markdown
---
title: Project Alpha
date: 2024-01-15
tags:
  - project
  - active
status: in-progress
---

# Project Alpha

This project aims to [[improve workflow]] using modern techniques.

> [!important] Key Deadline
> The first milestone is due on ==January 30th==.

## Tasks

- [x] Initial planning
- [ ] Development phase
  - [ ] Backend implementation
  - [ ] Frontend design

## Notes

The algorithm uses $O(n \log n)$ sorting. See [[Algorithm Notes#Sorting]] for details.

![[Architecture Diagram.png|600]]

Reviewed in [[Meeting Notes 2024-01-10#Decisions]].
````

## References

- [Obsidian Flavored Markdown](https://help.obsidian.md/obsidian-flavored-markdown)
- [Internal links](https://help.obsidian.md/links)
- [Embed files](https://help.obsidian.md/embeds)
- [Callouts](https://help.obsidian.md/callouts)
- [Properties](https://help.obsidian.md/properties)