[rout39574]

At the cost of constraining the rendering environment, do I get that right?

So the desire "Turn this generated graph into a diagram for inclusion in this PDF report" would be deemed a category error: my desire is wrong.

It clearly makes some folks happy, but to me it's the antithesis of a "tool"; it's more a "website feature". Different strokes.

[Jiocus]

I write my .pdfs in a stand-alone markdown editor which supports mermaid, so your use-case is what I experience when doing graphs in writing.

This way, there's no need to separately generate an image output to include into the document later on.

Different "tools".

That said, I'd love a dedicated application for diagraming, with exports to various formats for other use-cases.