HedgeDoc is an open-source real-time collaborative Markdown editor. This project was forked from — and is similar to — CodiMD (see the HedgeDoc website for a summary of the history of the project). As of November 2021, HedgeDoc version 2 isn’t yet publicly available — this page documents Markdown support in HedgeDoc version 1.

HedgeDoc 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 | Yes | |
| Definition Lists | Yes | |
| Strikethrough | Yes | |
| Task Lists | Yes | |
| Emoji (copy and paste) | Yes | |
| Emoji (shortcodes) | Yes | |
| Highlight | Yes | |
| Subscript | Yes | |
| Superscript | Yes | |
| Automatic URL Linking | Yes | |
| Disabling Automatic URL Linking | Yes | |
| HTML | Partial | Not all HTML elements are supported. |
As an added bonus, HedgeDoc provides support for several obscure elements.
| Element | Markdown | Rendered Output |
|---|---|---|
| Abbreviation | *[HTML]: Hyper Text Markup LanguageThe HTML specification is maintained by the W3C. |
The HTML specification is maintained by the W3C. |
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