The Markdown cheat sheet (printable & copy-pasteable)

You don't need to memorize Markdown. You need a single page you can glance at while you write. Save this one.

Headings

# H1
## H2
### H3
#### H4
##### H5
###### H6

Emphasis

**bold**  __also bold__
_italic_  *also italic*
~~strikethrough~~

Lists

- Bullet
- Bullet
  - Nested bullet

1. First
2. Second
   1. Nested

Task lists (GFM)

- [x] Done
- [ ] To do

Links and images

[Markdown Viewer](https://trymarkdownviewer.com)
![Alt text](https://example.com/image.png "Optional title")

Code

Inline `code` example.

```ts
// Fenced code block with syntax highlighting.
const greet = (name: string) => `Hello, ${name}!`;
```

Blockquotes

> A blockquote.
>
> > Nested blockquote.

Tables (GFM)

| Column | Aligned | Right |
| ------ | :-----: | ----: |
| Cell   |  Cell   |  Cell |

Horizontal rule

---

Footnotes (GFM)

Some text with a footnote.[^1]

[^1]: This is the footnote.

Math (KaTeX)

Inline: $a^2 + b^2 = c^2$

Block:

$$
\int_{-\infty}^{\infty} e^{-x^2}\,dx = \sqrt{\pi}
$$

Diagrams (Mermaid)

```mermaid
flowchart LR
  Idea --> Draft --> Publish
```

Emoji shortcodes

:smile: :rocket: :tada: :100: :heart: :coffee: :fire: :sparkles:

Roughly 250 common shortcodes are supported, including thumbs-up (:+1:), check (:check:), warning (:warning:), and the full GitHub set.

Common gotchas

• A list needs a blank line before it.
• A code fence needs three backticks — four-backtick fences only work for nested code samples.
• Line breaks: end a line with two trailing spaces or use a blank line.
• Pipes (|) inside table cells need to be escaped as \|.
• Raw HTML works in most renderers, but be careful — many static site generators sanitize it.

Editor power features

Inside Markdown Viewer, beyond the syntax:

• Find & replace with regex — Ctrl/⌘ + F
• Beautify to normalize lists and whitespace — Ctrl/⌘ + Shift + F
• Focus mode for distraction-free writing — Ctrl/⌘ + .
• One-click PDF export — downloads directly, no print dialog
• Smart paste — rich HTML on the clipboard converts to Markdown
• Readability stats — sentence length, top words, Flesch score

More guides

• Markdown table guide — alignment, escaping, accessibility
• Markdown images — sizing, hosting, alt text
• Markdown links — internal, external, anchors
• Markdown code blocks — syntax highlighting in 150+ languages
• Markdown vs HTML — when to use which

Test it live

Open the editor and try every example above. Want to download this page as a .md file? Click Export → Download .md in the toolbar. Want a printable PDF? Click Export → PDF.