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Master Markdown formatting for web publishing and technical documentation. A complete guide to headings, code blocks, tables, blockquotes, and CommonMark standards.
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Created in 2004 by John Gruber and Aaron Swartz, Markdown was designed with a clear, elegant mission: to allow writers and developers to create rich text using an easy-to-read, easy-to-write plain text format that converts cleanly into semantically valid XHTML/HTML.
Today, Markdown is the undisputed standard for technical documentation, GitHub READMEs, static site generators (Next.js, Astro), chat applications (Slack, Discord), and modern CMS workflows.
Headings are created using the hash (#) symbol, matching HTML <h1> through <h6>:
# Heading 1 (Page Title)
## Heading 2 (Major Section)
### Heading 3 (Subsection)
#### Heading 4
##### Heading 5
###### Heading 6
| Style | Syntax | Result |
|---|---|---|
| Bold | **bold text** | bold text |
| Italic | *italic text* | italic text |
| Bold & Italic | ***bold and italic*** | bold and italic |
| ~~Strikethrough~~ | ~~strikethrough~~ | ~~strikethrough~~ |
| Inline Code | `const x = 10;` | const x = 10; |
Use asterisks (*), hyphens (-), or plus signs (+):
- First bullet item
- Second bullet item
- Nested sub-bullet (indented with 2 or 4 spaces)
1. First step
2. Second step
3. Third step
Fenced code blocks are demarcated by three backticks (```) with an optional language identifier for syntax highlighting:
```typescript
interface UserSession {
id: string;
email: string;
isActive: boolean;
}
```
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Blockquotes are formatted with the greater-than symbol (>):
> "Simplicity is prerequisite for reliability."
> — Edsger W. Dijkstra
| Header 1 | Header 2 | Header 3 |
|:---|:---:|---:|
| Left-aligned | Centered | Right-aligned |
| Row 1 Value | Central Value | $19.99 |
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