The JSON Canvas (https://jsoncanvas.org/) format has just been announced (Announcing JSON Canvas: an open file format for infinite canvas data - Obsidian).
It would be great to see if Logseq’s whiteboards can use them. This would make Logseq more interoperable with Obsidian and other tools that use this format.
Would indeed be nice if both Obsidian and Logseq collaborated to further the format. Logseq could integrate some of its improvements into the spec.
(Linking an old forum post on the .canvas format.)
Indeed, this feature is crucial for being able to use the whiteboarding feature of Logseq. You can’t trust a file format that is not widely used.