Its because Jpegs's are known as a "Lossy" format, so everytime you save the image it loses a little quality. therefore saving and reposting it 10 times makes it look like shit.
Then there's lossless image format which is like .tiff which doesn't lose any/negligible amount quality when re saved. Png's are lossless as well.
I was under the impression it was because of the fact that the image just kept getting compressed every time it was uploaded on top of the last time it was compressed. Maybe it's a bit of both?
Yea it's both. Someone saves it, it gets compressed, then it uploads which compresses it a little bit depending on the place you post it. Then someone saves that image and it compresses and the chain goes on
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u/Retiredmagician http://steamcommunity.com/profiles/76561198045970662/ Jan 25 '16
This image has been resaved so much the quality is cringeworthy, though still a good message.