Add bookmarks
It would be very useful if there was a way to be able to have nextcloud save locations on a pdf in order to pick up where the person last read off. Perhaps this could be implemented by taking advantage of the bookmark button on the right side of the pdf viewer. The goal is just so that a person viewing their own pdfs can easily go back to the previous page. It might be possible to modify the toggle side bar on the left hand side and add another button between the view outline and view attachment button. So when the bookmark button is pressed it should save and create a bookmark for that exact pdf by referring to the actual title or if none exist defer to the name of the pdf that the nextcloud user gave it. This information would be stored within the app itself and not on the pdf.