Thread: KFX Format
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Old 01-05-2017, 06:40 PM   #474
jhowell
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Posts: 7,087
Karma: 91577715
Join Date: Nov 2011
Location: Charlottesville, VA
Device: Kindles
Starting with version 1.19, Kindle for PC will download books in KFX format and display them with enhanced typesetting.

The various files that make up the KFX format are all present, but named differently compared with an e-ink Kindle. Here is the same book after downloading to both platforms.

Kindle Paperwhite 2:
  • Perfect State (Kindle Single)_B00UZSTXL4.kfx (encrypted main container)
  • Perfect State (Kindle Single)_B00UZSTXL4.sdr/assets/voucher (DRM voucher)
  • Perfect State (Kindle Single)_B00UZSTXL4.sdr/assets/metadata.kfx (metadata container)
  • Perfect State (Kindle Single)_B00UZSTXL4.sdr/assets/attachables/CR!AX7PNNAM616C90FBFYKZ53GVC0QK.kfx (resource container)

Kindle for PC 1.19:
  • B00UZSTXL4_EBOK/amzn1.drm-voucher.v1.cd614ffd-319f-4b9e-99b7-238c6fe78f1e.voucher (DRM voucher)
  • B00UZSTXL4_EBOK/B00UZSTXL4_EBOK.azw (encrypted main container)
  • B00UZSTXL4_EBOK/CR!6AS14VN94H79K68RG9EKT09T41N0.azw.res (resource container)
  • B00UZSTXL4_EBOK/CR!SNRJN8W7KX07Z8MVGN4AMWXSFR3E.azw.md (metadata container)
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