rasterm

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

Supported Image Encodings

• Kitty
• iTerm2 / WezTerm
• Sixel

TODO

• mintty:
  • detection for iTerm format: https://github.com/mintty/mintty/issues/881
• iTerm2:
  • support: name, width, height, preserveAspectRatio options
• Kitty:
  • support animation
  • support image placement /dims
• 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

TESTING

• test sixel with
  • https://domterm.org/
  • https://www.macterm.net/
• test wez/iterm img with
  • iterm2
  • https://www.macterm.net/

Notes

terminal features matrix

known responses

CSI 0 c

CSI > 0 c

identifications

opinions

• 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 stuff

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

more reading

• kitty inline images: https://sw.kovidgoyal.net/kitty/graphics-protocol.html
• iterm2 inline images: https://iterm2.com/documentation-images.html
• xterm ctl seqs: https://invisible-island.net/xterm/ctlseqs/ctlseqs.html
• sixel ctl seqs: https://vt100.net/docs/vt3xx-gp/chapter14.html
• libsixel: https://saitoha.github.io/libsixel/