I've been trying to get image previews working in something this week, inside ZelliJ and wasn't able to find anything until a post in a Linux community about Foot.
Foot terminal emulator + ZelliJ + Yazi gives me what I wanted.
Now if only TTY supported SIXEL...
Foot terminal has Sixel support and thats the only support ZelliJ has as pass through IIRC, I couldn't get ZelliJ to work with anything else.
And the Yazi doc page says it uses Sixel on Foot terminal: https://yazi-rs.github.io/docs/image-preview/