Thread: How can i determine what books have DRM in calibre
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Old 12-20-2015, 12:09 AM   #4
eschwartz
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Location: The Beaten Path, USA, Roundworld, This Side of Infinity
Device: Kindle Touch fw5.3.7 (Wifi only)
But AZW3 books will have AZW3 as their original format, if you added it from the device.

E-Ink devices download MOBI as AZW and AZW3 as AZW3.
Kindle for PC if I remember correctly downloads both as AZW.

DRM Check: Find out what DRM that ebook has got.
Command-line python script to check books for DRM, requires some scripting on Windows/Linux to check many files at once, there is an AppleScript already attached to do so on OSX.
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