calibre User Manual — calibre 8. 16. 2 documentation Before calibre can do anything with your e-books, it first has to know about them Drag and drop a few e-book files into calibre, or click the “Add books” button and browse for the e-books you want to work with
calibre - About calibre supports almost every single e-reader and is compatible with more devices with every update You can transfer your e-books from one device to another in seconds, wirelessly or with a cable