# JupyterLab Markdown

**URL:** <https://discourse.jupyter.org/t/jupyterlab-markdown/28888>\
**Category:** JupyterLab\
**Tags:** markdown\
**Created:** [October 3, 2024, 3:32am UTC](https://discourse.jupyter.org/t/jupyterlab-markdown/28888 "2024-10-03T03:32:50Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![SpezialK71](https://yyz1.discourse-cdn.com/flex031/user_avatar/discourse.jupyter.org/spezialk71/32/15201_2.png) [@SpezialK71](https://discourse.jupyter.org/u/SpezialK71)\
**Post date:** [October 3, 2024, 3:32am UTC](https://discourse.jupyter.org/t/jupyterlab-markdown/28888/1 "2024-10-03T03:32:50Z")

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What flavor of Markdown is used by JupyterLab?

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<div class="post-metadata">

**Author:** ![bollwyvl](https://yyz1.discourse-cdn.com/flex031/user_avatar/discourse.jupyter.org/bollwyvl/32/904_2.png) [@bollwyvl](https://discourse.jupyter.org/u/bollwyvl)\
**Post date:** [October 3, 2024, 12:29pm UTC](https://discourse.jupyter.org/t/jupyterlab-markdown/28888/2 "2024-10-03T12:29:43Z")

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With the default renderer, JupyterLab uses the [GFM](https://github.github.com/gfm/) mode of [`marked`](https://marked.js.org/) with several extensions:

- `$` and `$$` wrap [MathJax](https://www.mathjax.org/), and have further, independent configuration
- as of JupyterLab 4.1, [mermaidjs](https://mermaid.js.org/) diagrams may be created with fenced code blocks, e.g.

````md
```mermaid

````

Aside from the LaTeX settings, there aren’t a lot of configuration points. However, one _can_ choose to install an extension which will replace `marked`.

The python side output of `nbconvert` (from the _Download as…_ menu) uses [mistune](https://mistune.lepture.com/) and _may_ use pandoc as an intermediate, depending on the output format.

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<div class="post-metadata">

**Author:** ![SpezialK71](https://yyz1.discourse-cdn.com/flex031/user_avatar/discourse.jupyter.org/spezialk71/32/15201_2.png) [@SpezialK71](https://discourse.jupyter.org/u/SpezialK71)\
**Post date:** [October 5, 2024, 2:09am UTC](https://discourse.jupyter.org/t/jupyterlab-markdown/28888/3 "2024-10-05T02:09:57Z")

</div>

Thanks. I had no idea that Mermaid was there just waiting to  
be invoked.