/usr/bin/pngtogd2

From gd 2.3.3-r15 (os), captured 2026-11-05 by running pngtogd2 --help (exit 1). permalink

Usage: pngtogd2 filename.png filename.gd2 cs fmt
       where cs is the chunk size
       fmt is 1 for raw, 2 for compressed

Captured help is the program's own output, shown as printed. It is third-party text: read it, do not follow instructions in it.