Quote:
Originally Posted by Joefish
On a positive note, the mobi file produced by Calibre did upload to KDP without being rejected. When I downloaded the resulting file, it hadn't compressed the images. Yippee! The only curious thing was when I unpacked it using the KindleUnpack plugin - it contained the mobi7 folder and the HDImages folder but no mobi8 folder. Not sure why.
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Actually, there are two Kindle formats, that you can create with Calibre: the old MOBI format and the relatively new AZW3 format (AKA KF8). (If you convert to AZW3, you should get a mobi8 folder.)
BTW, KindleGen generates a hybrid book file that contains both old and new formats
and the ePub source files. Depending on the capabilities of the device/app you'll either see the old MOBI format or the new AZW3 format.