Thread: KFX Format
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Old 02-21-2016, 05:42 PM   #356
jhowell
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Join Date: Nov 2011
Location: Charlottesville, VA
Device: Kindles
Quote:
Originally Posted by Notjohn View Post
And for what it's worth, I commented on KFX on the KDP forum this morning, only to have the post sent to moderation. I wonder if "KFX" has been added to the list of forbidden words, like "description"?
I think that Amazon wants to have everyone think about the enhanced typesetting feature and be unaware of the KFX file format associated with it. Even the new Kindle Previewer beta doesn't produce a KFX file that you can sideload to your own device. (The hidden KDF file produced is not sufficient.)

Quote:
Originally Posted by Notjohn View Post
Oh my goodness (as Donald Rumsfeld said in another connection), I just republished the book (yes, I found a typo), and I see that Enhanced Typesetting is now enabled. That was fast.
It is still mysterious to me why some books convert to KFX/KDF and others don't. I have been playing with the Previewer beta and while most books I've tried show Enhanced Typesetting (and produce a KDF) some fail to do so. Unfortunately, the previewer doesn't even tell you that KDF conversion failed. You need to use the ctrl-I (information) screen to see whether or not it shows "Enhanced Typesetting supported" to find out.

I have found no way to discover why a book was rejected. The conversion process produces some logs, which are immediately deleted. Even when I have been able to capture them I have yet to find an indication of what went wrong. Amazon has really failed to be helpful here. This leaves only trial and error to solve enhanced typesetting problems. (At least trial and error is easier with the previewer.)

Last edited by jhowell; 02-23-2016 at 07:46 PM.
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