Quote:
Originally Posted by graycyn
Well, I'm not a power Calibre user, so I'm not quite sure exactly how to do a comparison, but I'll see if I can. I wouldn't necessarily know what to look for, honestly. Social DRM can be done in varied ways, some obvious, some not so much.
EDIT: Just took a quick look at the size of the downloaded Adobe DRM file prior to deDRM, i.e. as it sits in my Digital Editions folder ... and there's a fair file-size difference!
Adobe DRM epub = 2,028 KB
Kobo SDRM epub = 3,435 KB
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That seems like way too much to be just watermarks. Maybe different image resolutions/compression algorithms being used?
I'd be happy to contribute to the research effort if we could find a target book that wasn't Rowling...