I use Calibre for e-books and some more digital documents. Calibre keep its own copy of the documents. It can be exported from Calibre. What is your strategy, approach; do you only have the file within Calibre, or do you also keep a stand alone file in your ordinary folder system? Or, it depends case by case?
#calibre
@hehemrin I use Zotero with Nextcluod webdav sync.
@anders So, it means you have the book/document in both Calibre and in Nextcloud as an ordinary file?