Extended Commonmark

Markdown-it Extension

Newline as hardbreak

Linkify

Direct Link is not common mark

2.12. Abbreviations

Support: PHP Markdown Extra 1.9.0, Markdown-it

Markdown Syntax: The "HTML" specification is maintained by the "W3C". *[HTML]: Hyper Text Markup Language *[W3C]: World Wide Web Consortium

HTML Syntax: The <abbr title="Hyper Text Markup Language">HTML</abbr> specification is maintained by the <abbr title="World Wide Web Consortium">W3C</abbr>.

Markdown Display:

The "HTML" specification is maintained by the "W3C". [HTML]: Hyper Text Markup Language [W3C]: World Wide Web Consortium

HTML Display:

The HTML specification is maintained by the W3C.

2.3. Tables

Support: kramdown

Notes:

we can set alignment in table with a colon (:)
we can add formatting text, links, code and HTML character code, but not: heading, headings, blockquotes, lists, horizontal rules, images, HTML tags, or fenced code

Support: PHP Markdown Extra, GFM, Maruku, MultiMarkdown, kramdown, Parsedown markdown-it (plugin), showdown, marked

Syntaxes

| Syntax      | Description | Test Text is long    |
| :---        |    :----:   |          ---: |
| [Example](https://www.example.com/)      | **Title**       | `Here's this  is` |
| Paragraph   | Text        | And more   |

HTML:

<table>
<thead>
<tr>
  <th align="left">Syntax</th>
  <th align="center">Description</th>
  <th align="right">Test Text is long</th>
</tr>
</thead>
<tbody>
<tr>
  <td align="left"><a href="https://www.example.com/">Example</a></td>
  <td align="center"><strong>Title</strong></td>
  <td align="right"><code>Here's this  is</code></td>
</tr>
<tr>
  <td align="left">Paragraph</td>
  <td align="center">Text</td>
  <td align="right">And more</td>
</tr>
</tbody>
</table>

Showcases

Syntax

Description

Test Text is long

Title

Here's this is

Paragraph

Text

And more

HTML

Syntax

Description

Test Text is long

Title

Here's this is

Paragraph

Text

And more

2.4. Footnote

2.4.1. Outline Footnote

Support: PHP Markdown Extra, Maruku , MultiMarkdown, Markdown-it

Markdown Syntax:

Here's a simple footnote[^1] and here's a longer one[^bignote], and [^withcode]

[^1]: This is the first footnote.
[^bignote]: Here's one with multiple paragraphs.
For example like this
[^withcode]: `code` or code in paragrahps
`code and codes`

HTML Syntax:

<p>Here’s a simple footnote<sup id="fnref:1"><a href="#fn:1" rel="footnote">1</a></sup> and here’s a longer one<sup id="fnref:2"><a href="#fn:2" rel="footnote">2</a></sup>, and <sup id="fnref:3"><a href="#fn:3" rel="footnote">3</a></sup></p>
<div class="footnotes"><hr /><ol><li id="fn:1">
<p>This is the first footnote. <a href="#fnref:1" rev="footnote">↩</a></p>
</li><li id="fn:2">
<p>Here’s one with multiple paragraphs. For example like this <a href="#fnref:2" rev="footnote">↩</a></p>
</li><li id="fn:3">
<p><code>code</code> or code in paragrahps <code>code and codes</code> <a href="#fnref:3" rev="footnote">↩</a></p>
</li></ol></div>

Markdown Display:

Here's a simple footnote and here's a longer one, and

For example like this : code or code in paragrahps code and codes

HTML Display:

Here’s a simple footnote1 and here’s a longer one2, and 3

This is the first footnote. ↩
Here’s one with multiple paragraphs. For example like this ↩
code or code in paragrahps code and codes ↩

### 2.4.2. Inline Footnote #1 Support: MultiMarkdown, Markdown Syntax: ```md Another example of footnote 1 link[^first] and footnote 2 link[^second]. ``` HTML Syntax: ```html

Another example of footnote 1 link1 and footnote 2 link2.

first ↩
second ↩

``` Markdown Display: Another example of footnote 1 link[^first] and footnote 2 link[^second]. HTML Display:

Another example of footnote 1 link1 and footnote 2 link2.

first ↩
second ↩

2.4.2. Inline Footnote #2

Support: Markdown-it

Markdown Syntax:

Or to add inline footnote^[Text of inline footnote] definition.

HTML Syntax:

<p>Or to add inline footnote<sup class="footnote-ref"><a href="#fn1" id="fnref1">[1]</a></sup> definition.</p>
<hr class="footnotes-sep">
<section class="footnotes">
<ol class="footnotes-list">
<li id="fn1" class="footnote-item"><p>Text of inline footnote <a href="#fnref1" class="footnote-backref">↩︎</a></p>
</li>
</ol>
</section>

Markdown Display:

Or to add inline footnote^[Text of inline footnote] definition.

HTML Display:

Or to add inline footnote[1] definition.

Text of inline footnote ↩︎

### 2.4.4. Duplicate Reference Support: PHP Markdown Extra, kramdown , MultiMarkdown, Markdown-it Markdown Syntax: ```md This is a duplicated footnote[^b]. This duplicated footnote reference[^b]. [^b]: Another footnote text. ``` HTML Syntax Kramdown Style: ```html

This is a duplicated footnote1. This duplicated footnote reference1.

Another footnote text. ↩ ↩2

``` HTML Syntax Markdown-it: ```

This is a duplicated footnote[1]. This duplicated footnote reference[1:1].

Another footnote text. ↩︎ ↩︎

``` Markdown Display: This is a duplicated footnote[^b]. This duplicated footnote reference[^b]. [^b]: Another footnote text. HTML Display Style Kramdown:

This is a duplicated footnote1. This duplicated footnote reference1.

Another footnote text. ↩ ↩2

HTML Display Style Markdown-it:

This is a duplicated footnote[1]. This duplicated footnote reference[1:1].

Another footnote text. ↩︎ ↩︎

--- ## 2.4. Strikethrough, Highlighting, Underline ### 2.4.1 Strikethrough Support: marked, RDiscount, Fatdown, Parsedown, GFM, showdown, markdown-it Markdown Syntax ``` ~~strikethrough~~ ``` HTML Syntax: ```html

strikethrough

~~strikethrough~~ ``` Markdown Display: ~~strikethrough~~ HTML Display: strikethrough

~~strikethrough~~

2.4.2 Mark (Highlighting)

Support: markdown-it Markdown Syntax:

==marked text==

HTML Syntax:

<p><mark>marked text</mark></p>

Markdown Display:

==marked text==

HTML Display:

marked text

2.4.3 Underline

Support: - (no markdown)

Markdown Syntax

++underline++

HTML Syntax

<u>underline</u>
<ins>underline</ins>

Markdown Display:

++underline++

HTML Display:

underline underline

2.5. Task Lists

Support: marked, showdown, markdown-it

Markdown Syntax:

- [x] Write the press release
- [ ] Update the website
- [ ] Contact the media

HTML Display Style 1:

<ul>
<li><input checked="" disabled="" type="checkbox"> Write the press release</li>
<li><input disabled="" type="checkbox"> Update the website</li>
<li><input disabled="" type="checkbox"> Contact the media</li>
</ul>

HTML Display Style 1:

<ul>
<li class="task-list-item" style="list-style-type: none;"><input type="checkbox" disabled style="margin: 0px 0.35em 0.25em -1.6em; vertical-align: middle;" checked> Write the press release</li>
<li class="task-list-item" style="list-style-type: none;"><input type="checkbox" disabled style="margin: 0px 0.35em 0.25em -1.6em; vertical-align: middle;"> Update the website</li>
<li class="task-list-item" style="list-style-type: none;"><input type="checkbox" disabled style="margin: 0px 0.35em 0.25em -1.6em; vertical-align: middle;"> Contact the media</li>
</ul>

Markdown Display:

Write the press release
Update the website
Contact the media

HTML Display Style 1

Write the press release
Update the website
Contact the media

HTML Display Style 2

Write the press release
Update the website
Contact the media

2.6. Definition Lists

Support: karmdown, banyak

Markdown Syntax:

First Term
: This is the definition of the first term.

Second Term
: This is one definition of the second term.
: This is another definition of the second term.

HTML Syntax:

<dl>
<dt>First Term</dt>
<dd>This is the definition of the first term.</dd>
<dt>Second Term</dt>
<dd>This is one definition of the second term. </dd>
<dd>This is another definition of the second term.</dd>
</dl>

Markdown Display:

First Term : This is the definition of the first term.

Second Term : This is one definition of the second term. : This is another definition of the second term.

HTML Display:

First TermThis is the definition of the first term.Second TermThis is one definition of the second term.This is another definition of the second term.

2.7. Emojies

2.7.1 Copy Paste of Emoji

Markdown Syntax

Gone camping! ⛺ Be back soon.
That is so funny! 😂

HTML Syntax

<p>Gone camping! ⛺ Be back soon.
That is so funny! 😂</p>

Markdown Display

Gone camping! ⛺ Be back soon. That is so funny! 😂

HTML Display

Gone camping! ⛺ Be back soon. That is so funny! 😂

2.7.2 Markdown of Emoji

Support: markdown-it

Markdown Syntax:

Gone camping! :tent: Be back soon.
That is so funny! :joy:
> Classic markup: :wink: :crush: :cry: :tear: :laughing: :yum:
>
> Shortcuts (emoticons): :-) :-( 8-) ;)

HTML Syntax:

<p>Gone camping! ⛺️ Be back soon.
That is so funny! 😂</p>
<blockquote>
<p>Classic markup: 😉 :crush: 😢 :tear: 😆 😋</p>
<p>Shortcuts (emoticons): 😃 😦 😎 😉</p>
</blockquote>

Markdown Display

Gone camping! :tent: Be back soon. That is so funny! :joy:

Classic markup: :wink: :crush: :cry: :tear: :laughing: :yum:
Shortcuts (emoticons): :-) :-( 8-) ;)

HTML Display

Gone camping! ⛺️ Be back soon. That is so funny! 😂

Classic markup: 😉 :crush: 😢 :tear: 😆 😋
Shortcuts (emoticons): 😃 😦 😎 😉

--- ## 2.9. Typographic replacements Support: markdown-it, Fatdown Markdown Syntax ```md (c) (C) (r) (R) (tm) (TM) (p) (P) +- test.. test... test..... test?..... test!.... !!!!!! ???? ,, -- --- "Smartypants, double quotes" and 'single quotes' ``` HTML Syntax: ```html

test… test… test… test?.. test!..

!!! ??? , – —

“Double quotes” and ‘single quotes’ ``` Markdown Display (c) (C) (r) (R) (tm) (TM) (p) (P) +- test.. test... test..... test?..... test!.... !!!!!! ???? ,, -- --- "Smartypants, double quotes" and 'single quotes' HTML Display

test… test… test… test?.. test!..

!!! ??? , – —

“Double quotes” and ‘single quotes’

2.10. Superscript and Subscript

2.10.1 Superscript

Support; MultiMarkdown, Fatdown, Markdown-it

Markdown x^2^

HTML:

Example Subscript Markdwon H~2~O

In HTML:

H2O

2.14. Math (Latex)

Support: Maruku (math)

Inline Einstein Equations $E=mc^2$ and Gamma Function $\Gamma(n) = (n-1)!\quad\forall n\in\mathbb N$

Outline equations

$\sin(\alpha)^{\theta}=\sum_{i=0}^{n}(x^i + \cos(f))$

2.15 Linkify

Support: Markdown-t, marked,Parsedown , GFM, Fatdown, showdown

**Markdown;

https://example.com/

fake@example.com

HTML:

https://example.com/

fake@example.com

Image with specific size

Support: Markdown-it, Maruku MultiMarkdown

![Wikipedia](https://upload.wikimedia.org/wikipedia/commons/thumb/d/de/Wikipedia_Logo_1.0.png/240px-Wikipedia_Logo_1.0.png "Wikipedia logo with specific size" =60x60)

2.2. Code Fencing and Highlighting

Notes:

We can make block code fences without need to be idented
lang is optional to specify the language of the code; if not specified, the app won't highlight the code;
We need one empty line before

Syntaxes

This is a fenced code block.
```

***Syntaxes***

    This is another fenced code block.

***Showcases***

This is a fenced code block.

~~~
No language indicated, so no syntax highlighting.
s = "There is no highlighting for this."
But let's throw in a <b>tag</b>.
~~~

### Code Highlighting

~~~
No language indicated, so no syntax highlighting.
s = "There is no highlighting for this."
But let's throw in a <b>tag</b>.
~~~


***Showcases*** (`javascript`)

```javascript
var s = "JavaScript syntax highlighting";
alert(s);

Showcases (python)

def function():
    #indenting works just fine in the fenced code block
    s = "Python syntax highlighting"
    print s

Showcases (ruby)

require 'redcarpet'
markdown = Redcarpet.new("Hello World!")
puts markdown.to_html

2.1. Attributes

2.1.1 Heading Attributes

Support: Markdown Extra , Maruku, kramdown Pandoc

Markdown:

### My Great Heading {#heading-ids}

Markdown

My Great Heading

In HTML:

My Great Heading

Link to Heading IDs

2.1.2 Block Attributes

Support: kramdown, Markdown Extra

> A nice blockquote
{: #with-an-id}

<blockquote id="with-an-id">
  <p>A nice blockquote</p>
</blockquote>

Markdown:

A nice blockquote {: #with-an-id}

HTML:

A nice blockquote

2.1.2 Inline Attributes

This is *red*{: style="color: red"}.

<p>This is <em style="color: red">red</em>.</p>

Ignoring Text

This is a paragraph
{::comment}
This is a comment which is
completely ignored.
{:/comment}
... paragraph continues here.

Extensions can also be used
inline {::nomarkdown}**see**{:/}!

<p>This is a paragraph
<!-- 
This is a comment which is
completely ignored.
 -->
… paragraph continues here.</p>

<p>Extensions can also be used
inline **see**!</p>

Implicit Header REferences

Support : Pandoc

So, to link to a heading

# Heading identifiers in HTML

you can simply write

[Heading identifiers in HTML]

[Heading identifiers in HTML][]

Line Blocks

Support: pandocs

| The limerick packs laughs anatomical
| In space that is quite economical.
|    But the good ones I've seen
|    So seldom are clean
| And the clean ones so seldom are comical

Kramdown

Markdown Extra

Pandoc

Definition Lists

✅

Table

✅

Attributes

✅

Footnote

✅

Abbreviation

✅

Code Fencing

✅

Task Lists

✅

Image Dimension

Mention

Strikethrough

Emoji

Image Sizing

Specifying size of image is supported only in some extended markdown (such as markdown-it).

Syntaxes

![Image Alt Text](/url/to/image.png "Optional Text")
![Image Alt Text](/url/to/image.png "Image specified with width and height" =800x600)
![Image Alt Text](/url/to/image.png =800x600)
![Image Alt Text](/url/to/image.png "Image specified with width" =800x)
![Image Alt Text](/url/to/image.png "Image specified with height" =x600)

Showcases

![Wikipedia](https://upload.wikimedia.org/wikipedia/commons/thumb/d/de/Wikipedia_Logo_1.0.png/240px-Wikipedia_Logo_1.0.png "Wikipedia logo with specific size" =60x60)

2.19. Attributes

Support:

Markdown item bold red{style="color:red"} HTML:

in HTML: item bold red

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