Since your comment is (was) topmost, I want to clarify that while kitty seems to have an overlarge attack surface, Sixel doesn't seem bad at all. There's an es

Since your comment is (was) topmost, I want to clarify that while kitty seems to have an overlarge attack surface, Sixel doesn't seem bad at all. There's an escape code to enter "sixel" mode, then base64-style data representing 1x6 pixel bitmaps, then an escape code to get back out. No vector graphics that might overdraw unexpectedly (security considerations!), no mechanism for out-of-band data (security considerations!), no unproven compression libraries (security considerations!), but also none of the extra magic that something like kitty would provide. I could live happily with Sixel being universally supported in my terminal emulators.