While w3m can display images, it assumes running in an xterm. I don't know how xterm compatible termux is nor if w3mimg uses some tricks which are not possible

While w3m can display images, it assumes running in an xterm. I don't know how xterm compatible termux is nor if w3mimg uses some tricks which are not possible on Android due to sandboxing etc. But I would be interested in the result if you ever try it.