ppmtojpeg(1) on Linux
The text 56fb8f447dad, as Debian 11 (Bullseye), Debian 10 (Buster), Debian 9 (Stretch), Debian 8 (Jessie), Debian 7 (Wheezy), Debian 6.0 (Squeeze), Debian 5.0 (Lenny), Debian 4.0 (Etch), Debian 3.1 (Sarge), Debian 3.0 (Woody) shipped it.
convert PNM image to a JFIF ("JPEG") image
Flags it lists
-
--baseline -
--comment -
--dct -
--exif -
--grayscale -
--greyscale -
--maxmemory -
--optimize -
--progressive -
--qslots -
--qtables -
--quality -
--restart -
--sample -
--scans -
--smooth -
--verbose