1 point
Jpg for photos, png for everything else.
It’s an easy rule of thumb, it hurts that 20 years of repeating it seems to have had zero effect.
Maybe this helps: Jpg fucks up your image, and png doesn’t.
Or: jpg is lossy, png is lossless.
Or: It’s better to save photos as png than cartoons as jpg.
Seriously, I hope some of this breaks through because deep fried images are so fucking unnecessary.