I had just learned about Mermaid and used it standalone once, when I realized it is also already built into Github Markdown [0], where you can include a diagram by just going ```mermaid <code>```, which is veeery handy. In mermaid.live can also get an SVG URL which works great to paste into many online drawing tools like Miro, Diagrams.net etc.

[0] https://docs.github.com/en/get-started/writing-on-github/wor...