ppmtopjxl(1) on Linux
The text 22b8e49778c1, as Debian 13 (Trixie), Debian 12 (Bookworm) shipped it.
convert a PPM image to an HP PaintJet XL PCL file
Flags it lists
-
-cluster -
-dark -
-diffuse -
-dither -
-gamma -
-height -
-nopack -
-presentation -
-width -
-xscale -
-xshift -
-xsize -
-yscale -
-yshift -
-ysize