This would make it easier for developers of other PDF viewers (e.g. Evince, Okular) or even non-pdf readers (e.g. Foliate) which already offer document annotations to store and sync those annotations on Matrix rooms, allowing for collaborative annotations.
This would make it easier for developers of other PDF viewers (e.g. Evince, Okular) or even non-pdf readers (e.g. Foliate) which already offer document annotations to store and sync those annotations on Matrix rooms, allowing for collaborative annotations.