Quote:
Originally Posted by jhowell
There are several factors at play.
In order to have the boldness slider you need a book in KF8 (azw3) or KFX format.
In order for the kindle to extract the cover thumbnail image for a sideloaded book it needs to be in original MOBI (azw) format.
You can get the kindle to display a thumbnail for a sideloaded book in KF8 or KFX format, but only if it marked as an e-book (cdetype=EBOK) and not a personal document (cdetype not set or cdetype=PDOC). In that case if the ASIN of the book matches that of a kindle book for sale then you will get that cover thumbnail. Otherwise you can sideload your own thumbnail image if you put it in the right place ("system/thumbnails" directory) with the right name. Both calibre and the ExtractCoverThumbs program have the ability to do this.
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Thanks! I used to know this about selecting Ebok instead of Pdoc, but it's been a few years since I did this, good to know this will work in azw3 this way. I'll be trying later or tomorrow. I'll do them this way, and sideload them onto my Voyage, then my Oasis when I get this. I'm too much of a perfectionist to live without the covers.
Correction: having tried that, without reading properly, I have the azw with cover and no bolding slider. So now I'm going to try put the jpeg cover I have in the correct folder, et voilą (hopefully).