Markdown Cheat Sheet

Markdown syntax reference — headings, formatting, links, images, tables, code blocks, and GitHub-flavored extras.

Headings

H1# Heading 1

H2## Heading 2

H3### Heading 3

H4#### Heading 4

Bold**bold text**

Italic*italic text*

Strikethrough~~strikethrough~~

Inline code`inline code`

Blockquote> This is a quote

Horizontal rule---

Link[text](https://url.com)

Image![alt](https://url.com/img.png)

Reference link

[text][ref]
[ref]: https://url.com

Unordered

- Item 1
- Item 2

Ordered

1. First
2. Second

Nested

- Item
  - Sub-item

Task list

- [x] Done
- [ ] Todo

Fenced block

```language
code here
```

Diff block

```diff
+ added
- removed
```

Basic table

| Col 1 | Col 2 |
|-------|-------|
| A     | B     |

Alignment

| Left | Center | Right |
|:-----|:------:|------:|

Footnote

Text[^1]
[^1]: Footnote content

Collapsed

<details>
<summary>Title</summary>
Content
</details>

Alert

> [!NOTE]
> This is a note

Mention@username

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