I usually output to Tiff or png, then convert (degrade) to jpg in my image software.

But you do raise an interesting point. Does Poser output (any format) conform to standards (is that ICC? or something like that?) or is there a way to measure that/ assess that?

Monterey/Mint21.x/Win10 - Blender3.x - PP11.3(cm) - Musescore3.6.2

Wir sind gewohnt, daß die Menschen verhöhnen was sie nicht verstehen
[it is clear that humans have contempt for that which they do not understand] 

Metaphor of Chooks