There Graphviz renderer on the GitHub Pages of the original viz.js repo. As described, this is:
... Makefile for creating Graphviz with Emscripten and a simple shell for using it in a browser.
Therefore, I would expect most Graphviz features. Although he could not make this 8K.dot file complaining about the 16MiB limitation (can be configured). Reducing the size, I got its first 1K lines without errors.
source share