Gregg...
"I only do epub 2 so I'm sure your plug-in is for me, but I'm still wondering how KFX figures into things. (I did find the MR link and it said "very little is known" about it.)"
Creating a KFX or Kindle fixed format ebook does have some advantages. But it also has many disadvantages plus one huge monetary disadvantage. Best that you download and read my free pdf ebook --
Using Kindle Create -- if you want the full story. The advantages/disadvantages of KFX conversion are all fully explained in the pros and cons section in the first chapter(
All About Kindle Create). And, as you'll see, the cons far outweigh the pros whenever you convert to KFX, which is why I would never consider using KFX for my ebooks because there are just too many painful downsides as far as I'm concerned. The download link to my free ebook is here:
https://drive.google.com/file/d/1GPM5zEybRlOdFyY3vE05cRGRFpsSvFqo/view?usp=sharing
"Is there any way I can see what my files look like on KF7 devices without having the actual devices? Any previewers out there that you know of?"
I still use the older version of
Kindle Previewer (
not Kindle Previewer 3) to check how my epubs behave on older KF7 devices. The KF7 display emulation on the older KP version is quite good. Unfortunately I think Amazon has removed the download link for this older version, so that's probably not going to help you. I can't think of any other prog that would help you, sorry.