Also, can a narration or subtitles be added to an Amazon Show slide show?
Hi, thanks so much for your questions!
With respect to the photos in different formats, I would recommend using Amazon Photos! There is an upload tool that should take all those file formats without issue. You can download Amazon Photos here. Once you install it, you can point the software to the folders on your computer where all your photos are stored.
Unfortunately, narration and subtitles cannot be added to an Amazon Slideshow yet, but hopefully that comes in the future! That would definitely be a great feature!
Hope that helps!