Quote:
Originally Posted by cgm707
I don't understand why they are showing up as KFX, as they are all being downloaded from my Kindle device. I thought AZW3 is the format for ebooks purchased from Amazon.
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At one time, an ebook from Amazon was downloaded in mobi format. A very limited format. Amazon created a new proprietary variant to compete with the capabilities of ePub which was KF8/azw3. Then came KFX. As of May 20th, 2026, any Amazon eInk ereaders not capable of rendering KFX (PW1 and older) are no longer able to download from Amazon.
From what I have read elsewhere, you might still get the occasional mobi format ebook downloaded from Amazon but KF8/azw3 is dead.