Graph the Web: Obsidian web browser add-on

I’ve always dreamed of a tool which would allow me to highlight sentences in a webpage and automatically turn these highlights into nodes/notes in a graph. Such a tool would make it easy to establish connections between things read in different webpages (once I highlight something, I can connect it to anything else I’ve highlighted before), giving rise to a networked repository of my navigation. All of that through the comfort of web browser (via add-on).

In the past, I’ve briefly investigated how such a tool could be prototyped via a mix of Hypothesis and Kumu. However, I lack the technical knowledge for such a weaving. But since I’ve started using Obsidian, I have a feeling that it has the potential to become such a tool. Would anyone here have thoughts around that?

Thank you!