MobileRead Forums - View Single Post - Send-to-kindle delivering KFX format to more devices

jhowell · 09-22-2023, 09:54 AM

Amazon's send to Kindle accepts user-supplied books via email, web, or app and converts them to Kindle formats for delivery to various Kindle reading apps and devices. Until recently only Scribe devices received personal documents in KFX format. All other Kindles received either KF8 (azw3) or MOBI format.

This appears to have changed in the last few days so that now most apps and devices that support KFX will receive personal documents in that format. The main exception appears to be the Kindle for PC app which still does not get KFX.

It is not yet clear why Amazon is doing this. One possibility is that they are preparing to allow hand drawn annotations to be viewed or created on non-Scribe devices and doing that requires KFX format. Another possible reason is that this is being done as part of a general shift away from the older Kindle formats.

I do not know if this change applies to everyone in every region. I see it for my own newly sent personal documents and saw a report on Reddit of someone else experiencing the same thing. I am curious to hear if this change is universal or limited.

09-22-2023, 09:54 AM	#1
jhowell Grand Sorcerer Posts: 7,094 Karma: 92190113 Join Date: Nov 2011 Location: Charlottesville, VA Device: Kindles	Send-to-kindle delivering KFX format to more devices Amazon's send to Kindle accepts user-supplied books via email, web, or app and converts them to Kindle formats for delivery to various Kindle reading apps and devices. Until recently only Scribe devices received personal documents in KFX format. All other Kindles received either KF8 (azw3) or MOBI format. This appears to have changed in the last few days so that now most apps and devices that support KFX will receive personal documents in that format. The main exception appears to be the Kindle for PC app which still does not get KFX. It is not yet clear why Amazon is doing this. One possibility is that they are preparing to allow hand drawn annotations to be viewed or created on non-Scribe devices and doing that requires KFX format. Another possible reason is that this is being done as part of a general shift away from the older Kindle formats. I do not know if this change applies to everyone in every region. I see it for my own newly sent personal documents and saw a report on Reddit of someone else experiencing the same thing. I am curious to hear if this change is universal or limited.