What is the EPUB3WEB format? #170
Description
Using the "--export-library" function (thanks), the single book in my library has three items available to download (one of them being a sample):
DrmType: SignedNoDrm
Format: EPUB3
Platform: Generic
Size: 1237614
DrmType: SignedNoDrm
Format: EPUB3WEB
Platform: Desktop
Size: 1205041
DrmType: None
Format: EPUB3_SAMPLE
Platform: Generic
Size: 380704
Do you know what the "EPUB3WEB" format might be, and how it differs from "EPUB3"? And do we know what the "Signed" refers to in "SignedNoDrm"? Do the files provided by Kobo have per-user embedded fingerprints/watermarks? I see that the logic to remove DRM in this tool decrypts the epub files but does nothing specifically to remove any watermarks.
Both this tool and the "Obok DeDRM" plugin elect to download the "EPUB3" format. Metadata between the two appears identical, except for the fact that the "EPUB3" format ebook contains an extra 4956 byte "js/kobo.js" file with logic for displaying the book (though I'm unsure if this is used when reading on a non-Kobo device).