CodiMD is an open-source real-time collaborative Markdown editor. You can easily deploy CodiMD with Docker following this tutorial. CodiMD supports CommonMark and other markup syntax, such as:

  • MathJax for formulas
  • Mermaid and Graphviz for UML diagrams
  • Vega-lite for data visualizations

CodiMD is the open-source version of HackMD.

CodiMD Markdown Support

CodiMD provides support for the following Markdown elements.

Element Support Notes
Headings Yes
Paragraphs Yes
Line Breaks Yes
Bold Yes
Italic Yes
Blockquotes Yes
Ordered Lists Yes
Unordered Lists Yes
Code Yes
Horizontal Rules Yes
Links Yes
Images Yes
Tables Yes
Fenced Code Blocks Yes
Syntax Highlighting Yes
Footnotes Yes
Heading IDs No
Definition Lists Yes
Strikethrough Yes
Task Lists Yes
Emoji (copy and paste) Yes
Emoji (shortcodes) Yes
Highlight No
Subscript No
Superscript No
Automatic URL Linking Yes
Disabling Automatic URL Linking No
HTML Yes

See Also

Take your Markdown skills to the next level.

Learn Markdown in 60 pages. Designed for both novices and experts, The Markdown Guide book is a comprehensive reference that has everything you need to get started and master Markdown syntax.

Get the Book
Want to learn more Markdown?

Don't stop now! 🚀 Star the GitHub repository and then enter your email address below to receive new Markdown tutorials via email. No spam!