rasterm

Encodes images to iTerm / Kitty / SIXEL (terminal) inline graphics protocols.

Supported Image Encodings

mintty:
- detection for iTerm format: mintty/mintty#881
iTerm2:
- support: name, width, height, preserveAspectRatio options
perhaps query tmux directly: TMUX=/tmp/tmux-1000/default,3218,4
improve terminal identification 19:VT340 ESC[>0c = 19;344:0c https://invisible-island.net/xterm/ctlseqs/ctlseqs-contents.html

terminal	sixel	iTerm2 format	kitty format
iterm2	Y	Y
kitty			Y
mintty	Y	Y
mlterm	Y	Y
putty
rlogin	Y	Y
wezterm	Y	Y
xterm	Y

terminal	values
apple terminal	`TERM_PROGRAM="Apple_Terminal"`
apple terminal	`__CFBundleIdentifier="com.apple.Terminal"`
guake
iterm2	`LC_TERMINAL="iTerm2"`
kitty	`TERM="xterm-kitty"`
mintty	`TERM="mintty"`
mlterm
putty
rlogin
st
terminology	`TERM_PROGRAM=terminology`
vimterm	`VIM_TERMINAL is set`
wez	`TERM_PROGRAM="wezterm"`
xfce
xterm

Sixel is a primitive and wasteful format. Most sixel terminals also support the iTerm2 format--fewer bytes, full color instead of paletted, and no pixel re-processing required. Much better!

go tool pprof -http=:8080 ./name.prof
godoc -http=:8099 -goroot="$HOME/go"
go test -v
go mod tidy
https://blog.golang.org/pprof