@Avgvstvs
Missing the point. There are so many variables it's not funny. The type of encoder does not matter.
PNG can be lossy and JPG can be lossless. The X axis and Y axis is the same for all containers. What
matters the most is the Z axis (colors). The encoding standard for PNG is better than JPG when less
colors are used. PNG is meant to be a free from royalty standard. Hence "P" for portable. And I don't
mean you can carry it around. PNG does for pictures what PDF for documents.
Because of the portability of PNG the standard falls down (files become huge) the more color information
that is encoded. If you are worried about loss with JPG, crank up the encoder to 9 from 7. JPG does
wonders for file size when lot's of color is needed. It's not free from a fee. Hence all MFG's who use it
pay in someway.
For B/W manga PNG is the way to go. Got more than 256 colors then JPG wins.
edit:
After some sleep I realized a mistake. It's not 256 colors it's 256 (cubed) colors,
that's 256x256x256. That's the point where PNG and JPG diverge. In size vs colors.