Quote:
Originally Posted by ephestione
A further suggestion regarding that: you may want to leave the "join together" part as an optional checkbox function, as I found that the joined version of the manually multithreaded conversion I did performed really bad on my paperwhite 3, as it was painfully slow to manage, both with turning pages and selecting text (but then again the pdf I'm talking about is 1000+ pages originally, go figure how big it became after conversion).
Now that on my kindle I put the 8 smaller pdf's, I can turn pages instantaneously and highlight text pretty much as fast as I can do that for proper ebooks, so leaving out separate pdf's for bigger documents is the way to go.
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Interesting. Do you know if it is the joining technique or just the sheer size of the PDF that reduces performance? You used pdfsam to join the files? Could you try jpdftweak also? Or could you try an overnight conversion that does it all in one piece (though as I recall this segfaulted k2pfdopt--so maybe just half of it?) to see how that compares? What would be best would be an A-B comparison between something produced only with k2pdfopt vs. something put together with various joining tools.