I have a number of EPUB titles that need renaming, from the likes of "1631214659.epub" to "Moon's Napa and Sonoma" and so on. They load into Calibre under their actual titles, but I still need to rename the source file appropriately for archiving. I've tried copying each file's string of identifier numbers into Google after the search term EPUB, and that usually works, but then I have to copy the resulting title text string and paste it into the file name each time. I'm wondering if there's an app that "reads" the file and can display or even change the book title on the fly.
I know nothing about ebook conversion beyond what Calibre affords, so if the info is viewable that way, I've missed it.