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Features

Introductions

CodiMD is a real-time, multi-platform collaborative markdown note editor.
This means that you can write notes with other people on your desktop, tablet or even on the phone.
You can sign-in via multiple auth providers like Facebook, Twitter, GitHub and many more on the homepage.

If you experience any issues, feel free to report it on GitHub.
Or meet us on Matrix.org or Gitter for dev-talk and interactive help.
Thank you very much!

Workspace

Modes

Desktop & Tablet

Edit: See only the editor.
View: See only the result.
Both: See both in split view.

Mobile

View: See only the result.
Edit: See only the editor.

Night Mode:

When you are tired of a white screen and like a night mode, click on the little moon and turn on the night view of CodiMD.

The editor view, which is in night mode by default, can also be toggled between night and day view using the the little sun.

Image Upload:

You can upload an image simply by clicking on the camera button .
Alternatively, you can drag-n-drop an image into the editor. Even pasting images is possible!
This will automatically upload the image to imgur, Amazon S3, Minio or local filesystem, nothing to worry about.

Share Notes:

If you want to share an editable note, just copy the URL.
If you want to share a read-only note, simply press publish button and copy the URL.

Save a Note:

Currently, you can save to Dropbox or save an .md file locally.

Import Notes:

Similarly to the save feature, you can also import an .md file from Dropbox ,
or import content from your clipboard , and that can parse some html which might be useful

Permissions:

It is possible to change the access permission to a note through the little button on the top right of the view.
There are four possible options:

	Owner read/write	Signed-in read	Signed-in write	Guest read	Guest write
Freely	✔	✔	✔	✔	✔
Editable	✔	✔	✔	✔	✖
Limited	✔	✔	✔	✖	✖
Locked	✔	✔	✖	✔	✖
Protected	✔	✔	✖	✖	✖
Private	✔	✖	✖	✖	✖

Only the owner of the note can change the note’s permissions.

Embed a Note:

Notes can be embedded as follows:

<iframe width="100%" height="500" src="https://hackmd.io/features" frameborder="0"></iframe>

Slide Mode:

You can use a special syntax to organize your note into slides.
After that, you can use the Slide Mode to make a presentation.
Visit the above link for details.

View

Table of Contents:

You can look at the bottom right section of the view area, there is a ToC button .
Pressing that button will show you a current Table of Contents, and will highlight which section you’re at.
ToCs support up to three header levels.

Permalink

Every header will automatically add a permalink on the right side.
You can hover and click to anchor on it.

Edit:

Shortcut Keys:

Just like Sublime text, which is pretty quick and convenient.

For more infomation, see here.

Auto-Complete:

This editor provides full auto-complete hints in markdown.

• Emojis: type : to show hints.
• Code blocks: type ``` and plus a character to show hint. ```
• Headers: type # to show hint.
• Referrals: type [] to show hint.
• Externals: type {} to show hint.
• Images: type ! to show hint.

Title:

This will take the first level 1 header as the note title.

Tags:

Using tags as follows, the specified tags will show in your history.

tags: features cool updated

YAML Metadata

You can provide advanced note information to set the browser behavior (visit above link for details):

• robots: set web robots meta
• lang: set browser language
• dir: set text direction
• breaks: set to use line breaks
• GA: set to use Google Analytics
• disqus: set to use Disqus
• slideOptions: setup slide mode options

ToC:

Use the syntax [TOC] to embed table of content into your note.

• Features
• Introductions
• Workspace
  • Modes
  • Night Mode:
  • Image Upload:
  • Share Notes:
  • Save a Note:
  • Import Notes:
  • Permissions:
  • Embed a Note:
  • Slide Mode:
• View
  • Table of Contents:
  • Permalink
• Edit:
  • Shortcut Keys:
  • Auto-Complete:
  • Title:
  • Tags:
  • YAML Metadata
  • ToC:
  • Emoji
  • ToDo List:
  • Code Block:
    • Blockquote Tags:
  • Externals
    • YouTube
    • Vimeo
    • Gist
    • SlideShare
    • Speakerdeck
    • PDF
  • MathJax
  • UML Diagrams
    • Sequence Diagrams
    • Flow Charts
    • Graphviz
    • Abc
  • Alert Area
  • Typography
    • Headers
    • Horizontal Rules
    • Typographic Replacements
    • Emphasis
    • Blockquotes
    • Lists
    • Code
    • Tables
    • Links
    • Images
    • Footnotes
    • Definition Lists
    • Abbreviations

Emoji

You can type any emoji like this

See full emoji list here.

ToDo List:

• ToDos
  • Buy some salad
  • Brush teeth
  • Drink some water

Code Block:

We support many programming languages, use the auto complete function to see the entire list.

var s = "JavaScript syntax highlighting";
alert(s);
function $initHighlight(block, cls) {
  try {
    if (cls.search(/\bno\-highlight\b/) != -1)
      return process(block, true, 0x0F) +
             ' class=""';
  } catch (e) {
    /* handle exception */
  }
  for (var i = 0 / 2; i < classes.length; i++) {
    if (checkCondition(classes[i]) === undefined)
      return /\d+[\s/]/g;
  }
}

If you want line numbers, type = after specifying the code block languagues.
Also, you can specify the start line number.
Like below, the line number starts from 101:

var s = "JavaScript syntax highlighting";
alert(s);
function $initHighlight(block, cls) {
  try {
    if (cls.search(/\bno\-highlight\b/) != -1)
      return process(block, true, 0x0F) +
             ' class=""';
  } catch (e) {
    /* handle exception */
  }
  for (var i = 0 / 2; i < classes.length; i++) {
    if (checkCondition(classes[i]) === undefined)
      return /\d+[\s/]/g;
  }
}

Or you might want to continue the previous code block’s line number, use =+

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

Somtimes you have a super long text without breaks. It’s time to use ! to wrap your code.

When you’re a carpenter making a beautiful chest of drawers, you’re not going to use a piece of plywood on the back.

Blockquote Tags:

Using the syntax below to specifiy your name, time and color to vary the blockquotes.
ChengHan Wu Sun, Jun 28, 2015 9:59 PM

Even support the nest blockquotes!
ChengHan Wu Sun, Jun 28, 2015 10:00 PM

Externals

YouTube

Vimeo

Gist

SlideShare

26 Disruptive & Technology Trends 2016 - 2018 from Brian Solis

Speakerdeck

PDF

Caution: this might be blocked by your browser if not using an https URL.

This browser does not support inline PDFs. Please download the PDF to view it: Download PDF

MathJax

You can render LaTeX mathematical expressions using MathJax, as on math.stackexchange.com:

The Gamma function satisfying $\Gamma(n) = (n-1)!\quad\forall n\in\mathbb N$ is via the Euler integral

$$x = {-b \pm \sqrt{b^2-4ac} \over 2a}.$$

$$\Gamma(z) = \int_0^\infty t^{z-1}e^{-t}dt\,.$$

More information about LaTeX mathematical expressions here.

UML Diagrams

Sequence Diagrams

You can render sequence diagrams like this:

Flow Charts

Flow charts can be specified like this:

Graphviz

Abc

More information about sequence diagrams syntax here.
More information about flow charts syntax here.
More information about graphviz syntax here
More information about mermaid syntax here
More information about abc syntax here

Alert Area

Yes

This is a message

Watch out

Oh No!

Typography

Headers

# h1 Heading
## h2 Heading
### h3 Heading
#### h4 Heading
##### h5 Heading
###### h6 Heading

Horizontal Rules

---

---

---

Typographic Replacements

Enable typographer option to see result.

© © ® ® ™ ™ § § ±

test… test… test… test?.. test!..

!!! ??? ,

Remarkable – awesome

“Smartypants, double quotes”

‘Smartypants, single quotes’

Emphasis

This is bold text

This is bold text

This is italic text

This is italic text

Deleted text

lu_lala

Superscript: 19^th

Subscript: H₂O

Inserted text

Marked text

Blockquotes

Blockquotes can also be nested…

…by using additional greater-than signs right next to each other…

…or with spaces between arrows.

Lists

Unordered

• Create a list by starting a line with +, -, or *
• Sub-lists are made by indenting 2 spaces:
  • Marker character change forces new list start:
    • Ac tristique libero volutpat at
    • Facilisis in pretium nisl aliquet
    • Nulla volutpat aliquam velit
• Very easy!

Ordered

1. Lorem ipsum dolor sit amet

2. Consectetur adipiscing elit

3. Integer molestie lorem at massa

4. You can use sequential numbers…

5. …or keep all the numbers as 1.

6. feafw

7. 332

8. 242

9. 2552

10. e2

Start numbering with offset:

57. foo
58. bar

Code

Inline code

Indented code

// Some comments
line 1 of code
line 2 of code
line 3 of code

Block code “fences”

Sample text here...

Syntax highlighting

var foo = function (bar) {
  return bar++;
};

console.log(foo(5));

Tables

Option	Description
data	path to data files to supply the data that will be passed into templates.
engine	engine to be used for processing templates. Handlebars is the default.
ext	extension to be used for dest files.

Right aligned columns

Option	Description
data	path to data files to supply the data that will be passed into templates.
engine	engine to be used for processing templates. Handlebars is the default.
ext	extension to be used for dest files.

Left aligned columns

Option	Description
data	path to data files to supply the data that will be passed into templates.
engine	engine to be used for processing templates. Handlebars is the default.
ext	extension to be used for dest files.

Center aligned columns

Option	Description
data	path to data files to supply the data that will be passed into templates.
engine	engine to be used for processing templates. Handlebars is the default.
ext	extension to be used for dest files.

Links

link text
link with title
Autoconverted link https://github.com/nodeca/pica

Images

Like links, Images also have a footnote style syntax

With a reference later in the document defining the URL location:

Show the image with given size

Footnotes

Footnote 1 link^[1].
Footnote 2 link^[2].
Inline footnote^[3] definition.
Duplicated footnote reference^[2:1].

Definition Lists

Term 1

Definition 1
with lazy continuation.

Term 2 with inline markup

Definition 2

  { some code, part of Definition 2 }

Third paragraph of definition 2.

Compact style:

Term 1

Definition 1

Term 2

Definition 2a

Definition 2b

Abbreviations

This is an HTML abbreviation example.
It converts “HTML”, but keeps intact partial entries like “xxxHTMLyyy” and so on.

---

1. Footnote can have markup
   and multiple paragraphs. ↩︎

2. Footnote text. ↩︎ ↩︎

3. Text of inline footnote ↩︎

• Features
• Introductions
• Workspace
  • Modes
  • Night Mode:
  • Image Upload:
  • Share Notes:
  • Save a Note:
  • Import Notes:
  • Permissions:
  • Embed a Note:
  • Slide Mode:
• View
  • Table of Contents:
  • Permalink
• Edit:
  • Shortcut Keys:
  • Auto-Complete:
  • Title:
  • Tags:
  • YAML Metadata
  • ToC:
  • Emoji
  • ToDo List:
  • Code Block:
    • Blockquote Tags:
  • Externals
    • YouTube
    • Vimeo
    • Gist
    • SlideShare
    • Speakerdeck
    • PDF
  • MathJax
  • UML Diagrams
    • Sequence Diagrams
    • Flow Charts
    • Graphviz
    • Abc
  • Alert Area
  • Typography
    • Headers
    • Horizontal Rules
    • Typographic Replacements
    • Emphasis
    • Blockquotes
    • Lists
    • Code
    • Tables
    • Links
    • Images
    • Footnotes
    • Definition Lists
    • Abbreviations
Expand allBack to topGo to bottom

• Features
• Introductions
• Workspace
  • Modes
  • Night Mode:
  • Image Upload:
  • Share Notes:
  • Save a Note:
  • Import Notes:
  • Permissions:
  • Embed a Note:
  • Slide Mode:
• View
  • Table of Contents:
  • Permalink
• Edit:
  • Shortcut Keys:
  • Auto-Complete:
  • Title:
  • Tags:
  • YAML Metadata
  • ToC:
  • Emoji
  • ToDo List:
  • Code Block:
    • Blockquote Tags:
  • Externals
    • YouTube
    • Vimeo
    • Gist
    • SlideShare
    • Speakerdeck
    • PDF
  • MathJax
  • UML Diagrams
    • Sequence Diagrams
    • Flow Charts
    • Graphviz
    • Abc
  • Alert Area
  • Typography
    • Headers
    • Horizontal Rules
    • Typographic Replacements
    • Emphasis
    • Blockquotes
    • Lists
    • Code
    • Tables
    • Links
    • Images
    • Footnotes
    • Definition Lists
    • Abbreviations

Expand allBack to topGo to bottom