@tsujan@stefonarch I am working on porting the latest konsole sources to pure Qt. If I understand correctly, Konsole has sixel support. If I succeed in the porting work (I’m at least a couple of months from any reasonable result), we can have sixel support.
There’s also an emacs lemmy client, lem.el. That has image support if you’re running emacs in a GUI environment, though I don’t know if there’s a way to convince emacs-in-a-terminal to translate it to sixel or kitty.