Markdown Cheatsheet

Headings

# Heading 1
## Heading 2
### Heading 3
#### Heading 4
##### Heading 5
###### Heading 6

Alternative syntax for H1 and H2:

Heading 1
=========

Heading 2
---------

---

Text Formatting

**bold text**
__also bold__

*italic text*
_also italic_

***bold and italic***

~~strikethrough~~

`inline code`

> Blockquote
> continues here

> Nested blockquote
>> second level

Output:
bold text | italic text | bold and italic | strikethrough | inline code

---

Lists

Unordered:

- Item one
- Item two
  - Nested item
  - Another nested
- Item three

* Also valid
+ Also valid

Ordered:

1. First item
2. Second item
   1. Nested ordered
   2. Another nested
3. Third item

Task list (GitHub Flavored Markdown):

- [x] Completed task
- [ ] Incomplete task
- [x] Another done

---

Links

[Link text](https://example.com)
[Link with title](https://example.com "Tooltip text")

<!-- Reference style -->
[link text][reference]
[reference]: https://example.com "Optional title"

<!-- Auto-link -->
<https://example.com>
<user@example.com>

---

Images

![Alt text](image.png)
![Alt text](image.png "Optional title")

<!-- Reference style -->
![Alt text][img-ref]
[img-ref]: image.png "Optional title"

---

Code

Inline:

Use `console.log()` for debugging.

Fenced code block with syntax highlighting:

```javascript
function greet(name) {
    return `Hello, ${name}!`;
}
```

Common language identifiers: javascript, typescript, python, csharp, java, sql, bash, powershell, json, yaml, html, css, xml, dockerfile

---

Tables

| Column 1 | Column 2 | Column 3 |
|----------|----------|----------|
| Row 1a   | Row 1b   | Row 1c   |
| Row 2a   | Row 2b   | Row 2c   |

<!-- Alignment -->
| Left     | Center   | Right    |
|:---------|:--------:|---------:|
| left     | center   | right    |

---

Horizontal Rule

---
***
___

---

Escaping Characters

Backslash escapes these special characters:
\ * _ {} [] () # + - . ! `

\*This is not italic\*

---

HTML in Markdown

Most Markdown renderers allow inline HTML:

<details>
<summary>Click to expand</summary>

Content here (can include Markdown)

</details>

<kbd>Ctrl</kbd>+<kbd>C</kbd>

<mark>highlighted text</mark>

---

GitHub Flavored Markdown (GFM)

Syntax highlighting in code fences — as shown above.

Tables — as shown above.

Task lists — as shown above.

Autolinks:

Visit https://github.com — automatically linked without brackets.

Strikethrough:

~~deleted text~~

Footnotes:

Here is a statement.[^1]

[^1]: This is the footnote.

Emoji:

:rocket: :white_check_mark: :warning:

Mentions and references (GitHub only):

@username         — mention a user
#42               — link to issue/PR
org/repo#42       — cross-repo reference
SHA               — link to commit

Alerts (GitHub only):

> [!NOTE]
> Useful information.

> [!WARNING]
> Important warning.

> [!TIP]
> Helpful tip.

> [!IMPORTANT]
> Critical information.

> [!CAUTION]
> Negative potential consequences.

---

Line Breaks and Paragraphs

• Paragraph: separate blocks with a blank line
• Hard line break: end a line with two or more spaces, then press Enter
• Soft line break: just pressing Enter (no extra space) — renders as a space in most parsers

First paragraph.

Second paragraph (blank line above).

Line one
Line two (two spaces after "one")

---

Quick Reference Card

Element	Syntax
Bold	**text**
Italic	*text*
Bold + Italic	***text***
Strikethrough	~~text~~
Inline code	`code`
Link	[text](url)
Image	
Heading 1–6	# to ######
Blockquote	> text
Unordered list	- item
Ordered list	1. item
Horizontal rule	---
Code block	```lang ```
Table	| col | col |
Task list	- [x] done