pbmtopk(1) on Linux
The text 8ecd0236695a, as Debian 13 (Trixie), Debian 12 (Bookworm) shipped it.
convert a PBM image into a packed (PK) format font
Flags it lists
-
-C -
-D -
-F -
-H -
-I -
-W -
-c -
-f -
-h -
-s -
-v -
-x -
-y