Picat converts images to sixel graphics, and outputs them to stdout. The tool achieves high quality output by making use of the libimagequant library for converting RGBA images to the sixel palette.
Not all terminals support sixels. I have personally tested picat in xterm on Xorg and foot on Wayland.
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USAGE:
picat [OPTIONS] [
If FILE is omitted, picat reads a single image from stdin.
OPTIONS:
-w, --width