Quote:
Originally Posted by jhowell
Images being split off into a separate AZW6 file when delivered to Kindle devices is not a new thing. It was first seen almost ten years ago in late 2013. In retrospect it was a precursor to KFX format which uses B/W JPEG-XR images split into a separate container when delivered to Kindle devices.
Because it is only used for a relatively small number of image-heavy books, handling AZW6 has not been a major priority. A method for combining the AZW6 and AZW3 files into a single AZW3 has been requested over the years for KindleUnpack and calibre, but those requests were rejected. A pull request to add that capability to the DeDRM plugin was rejected because it is not a DRM-related issue.
An AZW6 Image Merge plugin was created for calibre in 2021. However it only handles combining file downloaded using the Kindle for PC app, not an e-ink Kindle. The author of that plugin is still active on MobileRead. Perhaps they could be convinced to add handling for Kindle devices.
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Amazon creates different format variants of each book for delivery to different Kindle reading platforms. I took a look at the Feral book on some different model Kindles to see how they compare.
Download & Transfer: 2.17MB AZW3 file with color JPEG images
3rd gen Kindle Keyboard: same as Download & Transfer
5th gen Paperwhite 1: 678KB AZW3 + 958KB AZW6 with B/W JPEG-XR images
9th gen Oasis 2: 1.5MB KFX with B/W JPEG-XR images
Kindle for PC 1.39: 33.1MB KFX with high resolution color images
So in the end the quality of the book you receive varies greatly according to the device for which it is downloaded. |
Is there any way to pull out the images from the KFX version download with KindleforPC 1.39?