Originally Posted by bymy141 
Well, my experience with the code written I've seen over the last few decades, you can not be sure. It is not all quality that's out there
True. But given that it's *more* work to go to all that trouble versus simply updating the EXIF, it's not just a question of quality - it's a matter of someone having to be deliberately stupid or mean to write a program that went out of its way to degrade an image when the simpler solution would *not*.