I am performing research on the Kindle, and I am trying to generate some content including .azw, .azw1, .azw2, and .azw3 files.
I happen to have two .azw1 files from my personal Kindle book collection, but I am having trouble finding more. I've found a few .tpz files by clicking "Send Sample Now" with deliver to: "Transfer via Computer" selected. Sometimes it downloads as a .tpz file. (example: The FBI Career Guide: Inside Information on Getting Chosen for and Succeeding in One of the Toughest, Most Prestigious Jobs in the World) Once I copy it to my Kindle, sometimes it adds a .azw1 file. Sometimes.
.azw2 seems to be solely from active content. Files downloaded to PC for Kindle seem to always be .azw. Most files delivered directly to my Kindle or "Transfer via Computer" are .azw or .azw3.
Anyone have information on how each of these extensions are generated? I'd also be interested to know if you are an Android, Blackberry, or a webOS user and what file extensions you are seeing when you deliver content directly to your device.
This information is not directly a part of my research, but your feedback may steer future research.
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