Yes, but why have all that effort in spinning a web server when I can just give a link to a place where I have embedded the chart? Or even embed it in whatever chat you have that presentation on? Don't need the binary anywhere, that's the strength of Mermaid

Until that D2 wasm port is officially released, I don't think it's even fair to call D2 competition to Mermaid, it's on a complete other level of useability. I'm glad to see that it's close to releasing.