Stackblitz WebContainers currently support Node 18 and 20 and are stable across all major browsers. That means we can run a full Node-RED instance directly inside the browser—no local setup, no friction. By executing flows in a WebContainer instead of merely displaying them, we transform static examples into hands-on, interactive experiences. The proposal is simple: add a “Run Flow” action beneath the flow preview in Discourse. Users click once, Node-RED spins up in the browser, and the flow becomes executable on the spot. This upgrades community engagement from passive viewing to real-time experimentation and learning.
See this thread from a couple of years ago to get you started Node-Red in Browser via Stackblitz
ISTR that you had to sign up to use it so not something that could be enabled for all forum users unless they sign up to that as well. (I think)
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How can someone submit a plugin to this discourse community?
I also went down the stackblitz path but ended up creating a in-browser version because it was simpler.
I also created a blog post talking about how to embed NR in a web page --> HowTo: Embedding Node-RED | Open Mind Map Blog
