You're probably talking about the ones that encoded all weird and shit. Even as thumbnails they look a bit odd but do look like something and then when they are enlarged show something else but like with colors all fucked up. You can tell something is going on with how they are encoded but I have no idea how they do it. I've seen them in /b/ a couple times.

https://www.youtube.com/watch?v=PI_CBGdNeB0

I quickly found this link and this might be what you're talking about.

You can't actually make them, it's just something that happens every once in a while when 4chan gets 2 files mixed up

File: 1380138476790.png (223 KB, 500x500) Image search: [Google]

223 KB, 500x500

>>82530
I think he means ones like this

>>82597
Not OP here, but I think that is exactly what he's referring to. How do?

>>82598
OP Here, check this out >>82527

While I am here, can I ask if somebody can make the picture for me? I am not proficient with PS.

File: output1.png (69 KB, 300x100) Image search: [Google]

69 KB, 300x100

I made a program that can make these in the time it takes to select two images.

Pic related is OP's image and the current banner I had for example.

Anyone want to buy for $70 US dollars?

>>82698
>Pic related is OP's image and the current banner I had for example.
Looks like shit. Choose images of the same size next time.
>Anyone want to buy for $70 US dollars?
I'll take it for free

File: output2.png (55 KB, 464x678) Image search: [Google]

55 KB, 464x678

>>82703
>I'll take it for free