How does one make this type of img?

>>57909272
layered images if I remember correctly. there were tutorials for it floating around but I haven't seen them for a good 5 years or so

>>57909272
You set up 2 layers,goto adjustment>levels then set up one image to be 201 minimum(hidden) whereas the other 198 maximum(apparent). Then you save it as png and use tweakpng.exe to add gamma=0.03 and save

File: test.png (4KB, 640x400px) Image search: [Google]

4KB, 640x400px

idk let me try it

>>57909272
You start by learning how to use a search engine.

>>57910478
????

is'nti t simply editing of thhee embedded thumnbnail?

>>57912045
You cannot edit the embedded thumbnail. Therefore you have to get the gamma to incorrect values so that the preview image generated by 4chan shows the apparent image instead of the hidden image.

File: Shit Posting Guide.jpg (931KB, 933x3943px) Image search: [Google]

931KB, 933x3943px

>>57909272
You're welcome.

>>57912045
4chan generates a thumbnail for each image posted. So you need to trick the thumbnail generator to use only specific pixels for thumbnail generation.

File: test.png (33KB, 500x500px) Image search: [Google]

33KB, 500x500px

>>57912138
really?

File: test2.png (995KB, 500x500px) Image search: [Google]

995KB, 500x500px

>>57912138
>>57912582
its not working anon
why?

File: 1453051887925.png (5KB, 500x500px) Image search: [Google]

5KB, 500x500px

I just followed the instructions.

Does anyone have one of those images that don't have the pattern?

>>57912083
>you have to get the gamma to incorrect values so that the preview image generated by 4chan

So this is literally a bug in 4chan's preview generator then.

File: 1288428227309.png (9KB, 1152x864px) Image search: [Google]

9KB, 1152x864px

>>57912822
You mean the transparency ones?
I thought that was fixed.
Or are you talking about the imageswap bug?

>>57912955
>You mean the transparency ones?
Maybe.
I just remember that there were pictures like that that didn't have the dot pattern.

File: 1450105955213.png (127KB, 500x500px) Image search: [Google]

127KB, 500x500px

>>57909272

>>57912582
O

>>57912885
you are fucking retarded

>none of these ever work because my laptop, desktop, and phone use high DPI screens

>>57909272
>How does one make this type of img?
Doesnt work on mobile.

>>57912138
need a gimp one

>>57916087
I'm on mobile and >>57912955 worked for me. The thumbnail contained text that the full image did not.

>>57912885
Its php bug u faggot, its reimplemented in almost every imageboard engine like wakaba or makaba, which is 4chan running at for example

File: gimp.png (979KB, 500x500px) Image search: [Google]

979KB, 500x500px

Did I do it?

>>57916441
It did something, but not the wanted result

File: 1358894915159.png (1MB, 1000x687px) Image search: [Google]

1MB, 1000x687px

>>57909272
magic

File: 1451062713016.png (410KB, 406x536px) Image search: [Google]

410KB, 406x536px

>>57916546

File: 1424494125830.png (646KB, 800x900px) Image search: [Google]

646KB, 800x900px

>>57916551

>>57912138

That's so fucking intricate. How do people find out about these things? I realize that it's not something exclusive to 4chan but still.

File: 1473085455451.png (2MB, 1902x1068px) Image search: [Google]

2MB, 1902x1068px

>>57909272

>>57912582
Posting your mother bait is a bannable offense. Mods!

File: test1.png (313KB, 800x800px) Image search: [Google]

313KB, 800x800px

test

File: no.png (5KB, 500x500px) Image search: [Google]

5KB, 500x500px

>>57909272
Test

>>57917329
freetards btfo

File: 1473988061772.png (106KB, 600x338px) Image search: [Google]

106KB, 600x338px

>>57916600
This one is pretty good.

>>57912809
not terrible but you have to remember that most layers are basically the same picture