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Old 02-12-2020, 05:28 PM   #2
jhowell
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Posts: 7,096
Karma: 92190113
Join Date: Nov 2011
Location: Charlottesville, VA
Device: Kindles
Quote:
Originally Posted by Blakestr View Post
1. Do I need to keep a epub/mobi copy of every file, if I mainly only read on the Kindle?
I consider the Kindle formats to be proprietary reader formats. Along with your Kindle output format of choice I suggest archiving a more open publishing format, such as EPUB, for future compatibility.

Quote:
Originally Posted by Blakestr View Post
I use PC and android, but I'm assuming both devices would at least have KFX reader, so there's less reasons to maintain multiple formats for the same book than there have been in the past? Last time I just kept them out of fear of the AZW not converting back, and I was forced to filter calibre for only AZW before sending them to my Kindle.
KFX is supported on Kindle apps and devices released within the past few years. It is not supported as a format for personal documents that sync across devices associated with your Amazon account.

Quote:
Originally Posted by Blakestr View Post
2. How backwards compatible is the new (new to me) KFX format? Can I go back and forth between files (excluding the problamatic PDF's, which I will probably handle differently, feel free to recommend an updated solution for PDF's layouts, 3 years ago my understanding was simply, "conversion is generally crappy"
KFX has limited compatibility. Converting either from or to KFX is a lossy process. The conversion process applies "adjustments" to the formatting of the book in an attempt to improve readability. The HTML markup of the original source is also lost because unlike most other e-book formats, KFX is not based on HTML. Converting to KFX from other formats may not always be possible due to the limitations of the KFX format.

KFX enables the Enhanced Typesetting features of the Kindle platform. If compatibility is more important then I would recommend KF8 (azw3) as a more compatible alternative since it is based on HTML.

Quote:
Originally Posted by Blakestr View Post
3. Has indexing on the kindle hardware changed? Last it was one of those things that can take days for thousands of books, requiring you to keep the device plugged in and in some cases, manually refresh it to speed up the process.
Still the same. Transferring smaller batches is recommended because indexing can fail for some books stopping the process and when that happens finding the book that caused it can be problematic.
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