Quote:
Originally Posted by darryl
His talk of scans certainly suggests topaz, but as I understand things topaz files have their own file extensions, and would not use mobi or azw3.
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On the whole, the extensions (with the exception of a few) have very little bearing on the underlying format. They often change depending on what platform/device/reading app is being used. I've seen just about anything and everything under the hoods of files with the azw, prc file extensions.
AZW3 is always a KF8, but KF8 sometimes has an AZW extention. TPZ is Topaz, but an AZW, PRC can also be a Topaz file. AZW4 is pretty consistently a Print Replica (PDF) book, but other than that ... pretty-much anything goes. It's the DRM plugin itself that tries to create some consistency by assigning specific extensions to specific formats.