Markdown構文
見出し、強調、リンク、リスト、コード、テーブルなどの完全な構文リファレンス
Headings
| Syntax | Shorthand | Example | Rendered | Notes |
|---|---|---|---|---|
# Heading
|
H1 |
# My Title |
H1 | Largest heading; maps to <h1> |
## Heading
|
H2 |
## Section |
H2 | Maps to <h2> |
### Heading
|
H3 |
### Subsection |
H3 | Maps to <h3> |
#### Heading
|
H4 |
#### Detail |
H4 | Maps to <h4> |
##### Heading
|
H5 |
##### Note |
H5 | Maps to <h5> |
###### Heading
|
H6 |
###### Fine print |
H6 | Smallest heading; maps to <h6> |
Emphasis
| Syntax | Shorthand | Example | Rendered | Notes |
|---|---|---|---|---|
**text**
|
Bold |
**hello** |
hello | Also __text__ |
*text*
|
Italic |
*hello* |
hello | Also _text_ |
***text***
|
Bold + Italic |
***hello*** |
hello | Also ___text___ |
~~text~~
|
Strikethrough |
~~hello~~ |
hello | Requires GFM support |
`code`
|
Inline code |
`var x = 1` |
var x = 1 | Monospace; escapes HTML |
Links & Images
| Syntax | Shorthand | Example | Rendered | Notes |
|---|---|---|---|---|
[text](url)
|
Inline link |
[Google](https://google.com) |
Opens in same tab by default | |
[text](url "title")
|
Link + title |
[G](https://g.com "Go") |
Title shown on hover | |
[text][ref]
|
Reference link |
[Google][g] ... [g]: url |
Define URL elsewhere in doc | |

|
Inline image |
 |
<img> | Alt text improves accessibility |
<url>
|
Autolink |
<https://example.com> |
link | URL or email becomes clickable |
Lists
| Syntax | Shorthand | Example | Rendered | Notes |
|---|---|---|---|---|
- item
|
Unordered |
- Apple
- Banana |
* Apple | Also * or + as bullet |
1. item
|
Ordered |
1. First
2. Second |
1. First | Numbers auto-increment in output |
- nested
|
Nested list |
- Item
- Sub |
* Item > Sub | Indent 2+ spaces to nest |
- [ ] task
|
Task (unchecked) |
- [ ] Todo |
[ ] Todo | GitHub Flavored Markdown |
- [x] task
|
Task (checked) |
- [x] Done |
[x] Done | GFM checked task item |
Code Blocks
| Syntax | Shorthand | Example | Rendered | Notes |
|---|---|---|---|---|
```lang
|
Fenced block |
```js
code
``` |
<pre> | Language hint enables syntax highlight |
code
|
Indented block |
let x = 1; |
<pre> | 4 spaces or 1 tab indentation |
`code`
|
Inline code |
Use `npm install` |
npm install | Single backtick pair |
Blockquotes
| Syntax | Shorthand | Example | Rendered | Notes |
|---|---|---|---|---|
> text
|
Blockquote |
> This is a quote |
" quote | Renders as <blockquote> |
>> text
|
Nested quote |
>> Inner quote |
"" inner | Double > for nested blockquote |
> **Note**
|
Callout style |
> **Warning:** text |
callout | Bold first word for callout pattern |
Tables
| Syntax | Shorthand | Example | Rendered | Notes |
|---|---|---|---|---|
| Col | Col |
|
Header row |
| Name | Age | |
<th> | Pipes define columns |
|-----|-----|
|
Separator |
| --- | --- | |
divider | Required after header row |
| :--- |
|
Left align |
| :--- | |
left | Colon on left side |
| ---: |
|
Right align |
| ---: | |
right | Colon on right side |
| :---: |
|
Center align |
| :---: | |
center | Colons on both sides |
Horizontal Rules
| Syntax | Shorthand | Example | Rendered | Notes |
|---|---|---|---|---|
---
|
Rule (hyphens) |
--- |
<hr> | Three or more hyphens |
***
|
Rule (asterisks) |
*** |
<hr> | Three or more asterisks |
___
|
Rule (underscores) |
___ |
<hr> | Three or more underscores |
Escaping
| Syntax | Shorthand | Example | Rendered | Notes |
|---|---|---|---|---|
\*
|
Escape char |
\*literal\* |
*literal* | Backslash escapes: \\ ` * _ { } [ ] ( ) # + - . ! |