Author of the JS bindings here. I also have a browser demo: https://ansi-o-matic.molinero.dev

BubbleTea is great, but it doesn't have support for Kitty Graphics. https://github.com/charmbracelet/bubbletea/issues/163

One of the really cool things about chafa is that it has both sixel and kitty graphic renderers! (and iterm2 images as well) So you can output kitty if the terminal supports it, but fall back to ascii if it doesn’t.

What interests me about it is the unicode mosaic output format that looks higher quality than the usual upper half block or braille character approaches without needing to support a special protocol.

Setting aside the usual compatibility issues with those things.. neither are available from your buildbot. Also while Jupyter does supports images other notebooking ecosystems may not, and anyway you need a file whereas chafa can work with streams.

Running the included notcurses-demo on any half-modern terminal is really impressive:

https://www.youtube.com/watch?v=b4lmMADP1lA

notcurses is probably the best option for getting the best you can out of a random terminal (see https://github.com/dankamongmen/notcurses/blob/master/TERMIN... which details the status of most terminals people use), but the main thing is to choose a decent terminal that meets your needs. I personally use xterm (after using various other terminals, both "modern" and VTE-based), as I'm on Linux, and I need to connect to various devices (e.g. networking gear) where I need a reliable terminal that handles whatever those devices throw at it. The graphical mechanisms that work for me therefore are sixel and tektronic.

Does any of those graphics mechanisms work over ssh?

'tis true.