Embed excalifraw similarly as draw.io
J
Jeewes
excalidraw.com is phenomenal whiteboarding app which has been designed for to support in app embedding.
The file format also supports both JSON and PNG with embedded drawing data.
I think this would be a perfect fit for wiki.js. Two stunning open source projects.
Might be a good merge request candidate for someone willing to help the main dev. Probably possible to mimick existing draw.io implementation.