📖 Guide

Markdown — Complete Reference

Complete Markdown syntax reference for headings, formatting, links, tables, code blocks, and extensions.

63 commands across 10 categories

Related tool:Markdown Preview →

Headings Text Formatting Links & Images Lists Code Tables Blockquotes Horizontal Rules Task Lists Footnotes & Extensions

Headings

Command	Description
`# Heading 1`	Top-level heading (H1)
`## Heading 2`	Second-level heading (H2)
`### Heading 3`	Third-level heading (H3)
`#### Heading 4`	Fourth-level heading (H4)
`##### Heading 5`	Fifth-level heading (H5)
`###### Heading 6`	Sixth-level heading (H6) — smallest
`Heading 1\n=========`	Alternative H1 using underline syntax
`Heading 2\n---------`	Alternative H2 using underline syntax

Text Formatting

Command	Description
`bold text`	Bold text
`italic text`	Italic text
`*bold and italic*`	Bold and italic combined
`~~strikethrough~~`	Strikethrough text
`inline code`	Inline code span
`Text with <sub>subscript</sub>`	Subscript (HTML tag)
`Text with <sup>superscript</sup>`	Superscript (HTML tag)
`==highlighted==`	Highlighted text (some parsers)

Links & Images

Command	Description
`[text](https://url.com)`	Inline link
`[text](url "Title")`	Link with hover title
`<https://url.com>`	Autolink — URL rendered as clickable link
`[text][ref] ... [ref]: url`	Reference-style link
`![alt text](image.png)`	Image
`![alt](img.png "Title")`	Image with title
`[![alt](img.png)](url)`	Linked image (image inside a link)

Lists

Command	Description
`- Item / * Item / + Item`	Unordered list (any bullet marker)
`1. First\n2. Second`	Ordered list
`1. First\n1. Second\n1. Third`	Ordered list (auto-numbered — all can be 1.)
`- Sub-item`	Nested list (indent 2-4 spaces)
`- Item\n\n Continued paragraph`	List item with paragraph continuation
1. Item\n ```code```	Code block inside list item (indent to align)

Code

Command	Description
`inline code`	Inline code
```\ncode block\n```	Fenced code block
```python\nprint("hi")\n```	Fenced code block with syntax highlighting
`indented line`	Indented code block (4 spaces or 1 tab)
``code with `backtick` inside``	Inline code containing backticks (use double backticks)
```diff\n+ added\n- removed\n```	Diff syntax highlighting

Tables

Command	Description
`\| H1 \| H2 \|\n\|---\|---\|\n\| A \| B \|`	Basic table
`\| :--- \| :---: \| ---: \|`	Column alignment: left, center, right
`\| Cell with \\| pipe \|`	Escape pipe character inside table cells
\| Bold \| `code` \| [link](url) \|	Inline formatting works inside table cells
`\| H1 \| H2 \|\n\|---\|---\|`	Minimum table — header + separator row required

Blockquotes

Command	Description
`> Quote text`	Blockquote
`> Line 1\n> Line 2`	Multi-line blockquote
`> Outer\n>> Nested`	Nested blockquote
`> Note: text`	Blockquote with formatted text inside
`> [!NOTE]\n> Useful info`	GitHub-flavored admonition (NOTE, TIP, WARNING, CAUTION)

Horizontal Rules

Command	Description
`---`	Horizontal rule (three hyphens)
`***`	Horizontal rule (three asterisks)
`___`	Horizontal rule (three underscores)
`- - -`	Horizontal rule (spaced hyphens also valid)
`\n---\n`	Ensure blank lines around --- to avoid heading interpretation

Task Lists

Command	Description
`- [ ] Unchecked item`	Unchecked task list item
`- [x] Checked item`	Checked (completed) task list item
`- [x] Done\n- [ ] Pending\n- [ ] Todo`	Task list with mixed states
`1. [ ] Ordered task`	Task list with ordered numbering
`- [ ] Parent\n - [ ] Sub-task`	Nested task list

Footnotes & Extensions

Command	Description
`Text[^1] ... [^1]: Footnote text`	Numbered footnote
`Text[^note] ... [^note]: Named footnote`	Named footnote reference
`Term\n: Definition`	Definition list (some parsers)
`H~2~O`	Subscript shorthand (some parsers)
`X^2^`	Superscript shorthand (some parsers)
```mermaid\ngraph LR; A-->B\n```	Mermaid diagram (GitHub, GitLab)
$E = mc^2$	Inline math (LaTeX syntax, GitHub/GitLab)
`$$\n\sum_{i=1}^n x_i\n$$`	Block math equation

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