>>3626509>nearly 3k master1200 images.You're causing me great distress.
The only solace is that anything with a resolution of 1200 or less for both length and width are fine. If you have Windows 10 (I don't know if it works with 7/8/8.1 or otherwise), then you can put "height:>1200 and width:>1200" into the search bar in that folder and get everything that would need to be re-saved.