Click on the picture

>>112823
smells like steganography,
but probably simpler than most would think

have you posted in >>>/g/,
they have a 'stupid questions thread'?

>>112823
fuck me

>>112823
github doubleVision

File: 1429132728006.webm (2MB, 1468x860px) Image search: [Google] [Yandex] [Bing]

2MB, 1468x860px

>When I open it on my PC I only get the first image
only works in image boards like 4chan that use the php gd lib to make thumbnails and process the uploaded images. doesn't work anywhere else.

File: 1171267010042.png (185KB, 500x500px) Image search: [Google] [Yandex] [Bing]

185KB, 500x500px

> how this works
Gamma correction, makes the picture darker. That's all.

Some software doesn't support it (like the 4chan thumbnailer), sometimes it's an option you can disable (look for color management settings).