cjpeg(1) on Linux
The text dafdca10ca78, as Debian 10 (Buster) shipped it.
compress an image file to a JPEG file
Flags it lists
-
-arithmetic -
-baseline -
-dct -
-debug -
-grayscale -
-memdst -
-optimize -
-progressive -
-rgb -
-targa -
-verbose -
-version