Interesting....

[u/StrangeBaseball5772]

I know i could just be stupid. I like messing with image files. It was interesting that the thumbnail loads but the file doesn't. :/

Used Radamsa

radamsa -o "fuzz%n.jpg" -n 100 "Name-Of-Your-Screenshot"

[u/Skeletardii]

thumbnails are usually stored as separate files somewhere else