mkdocs-material/docs/reference/diagrams.md
2021-01-02 16:43:46 +01:00

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# Diagrams
Diagrams help to communicate complex relationships and interconnections between
different technical components, and are a great addition to project
documentation. Material for MkDocs integrates with [Mermaid.js][1], a very
popular and flexible solution for drawing diagrams.
[1]: https://mermaid-js.github.io/mermaid/
## Configuration
### SuperFences
[:octicons-file-code-24: Source][2] ·
:octicons-beaker-24: Experimental ·
[:octicons-heart-fill-24:{: .tx-heart } Insiders only][2]{: .tx-insiders }
The [SuperFences][3] extension, which is part of [Python Markdown
Extensions][4], allows for adding __custom fences__, which can be used to
render [Mermaid.js][1] diagrams with zero effort:
``` yaml
markdown_extensions:
- pymdownx.superfences:
custom_fences:
- name: mermaid
class: mermaid-experimental
format: !!pymdownx.superfences.fence_code_format
```
No further configuration is necessary. Material for MkDocs will automatically
load and initialize the [Mermaid.js][1] runtime when a page includes a [fenced
`mermaid` block][5]. Furthermore:
- [x] Works with [instant loading][6] without any additional effort
- [x] Diagrams automatically use fonts and colors defined in `mkdocs.yml`[^1]
- [x] Fonts and colors can be customized with [additional stylesheets][7]
- [x] Support for both, light and dark color schemes
_While it's also possible to integrate [Mermaid.js][1] using existing
third-party solutions[^2], the new native integration is recommended as it
ensures interoperability with all Material for MkDocs features._
[^1]:
While all [Mermaid.js][1] features should work out-of-the-box, Material for
MkDocs will currently only adjust the fonts and colors for flow charts,
class and state diagrams. Support for further diagram types will be added
gradually.
[^2]:
If you don't want to use the native integration, [mkdocs-mermaid2-plugin][8]
might be a good alternative. However, note that this plugin cannot be used
in conjunction with the [mkdocs-minify-plugin][9] and doesn't integrate
natively.
[2]: ../insiders.md
[3]: https://facelessuser.github.io/pymdown-extensions/extensions/superfences/
[4]: https://facelessuser.github.io/pymdown-extensions/
[5]: #usage
[6]: ../setup/setting-up-navigation.md#instant-loading
[7]: ../customization.md#additional-css
[8]: https://github.com/fralau/mkdocs-mermaid2-plugin
[9]: https://github.com/byrnereese/mkdocs-minify-plugin
## Usage
### Using diagrams
Mermaid diagrams are written as [code blocks][10] with the help of the
[SuperFences][11] extension. They must be enclosed with two separate lines
containing three backticks:
_Example_:
```` markdown
``` mermaid
graph LR
A[Start] --> B{Error?};
B -->|Yes| C[Hmm...];
C --> D[Debug];
D --> B;
B ---->|No| E[Yay!];
```
````
_Result_:
[![Diagram][12]{: style="width: 100%; max-width: 594px" }][12]
_See the [official documentation][1] to learn about all available diagram
types._
[10]: code-blocks.md
[11]: #superfences
[12]: ../assets/screenshots/diagram.png