Best format to sideload to Kindle Paperwhite?

[JSWolf]

Originally Posted by Quoth

I delete line-height. It's for web pages. The font metrics plus user spacing (on app or device) set it fine.

I made the line height metadata in ChareInk smaller so on a Kindle (before KFX) the line space was set to a much more normal size. Then along comes KFX and totally ignores the line spacing metadata of fonts. This is why it's still best to use KF8.