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by Asooka 2155 days ago
https://en.wikipedia.org/wiki/Sixel for displaying static images or https://en.wikipedia.org/wiki/ReGIS for vector graphics. Sadly I think only xterm fully supports these. Though the modern alternative would be an escape sequence to request a file descriptor into which to just dump an html document. Your OS already has a browser, the terminal should be able to just embed it above the commandline to display graphics.