[DavidBuchanan]

And yet, nobody has done the same for Twitter until now.

The difference is that twitter applies a series of operations to all uploaded image, stripping EXIF data, recompressing, etc., which would normally be difficult to work around.

[awirth]

Did people do this back in the day? 4chan used to be totally fine with just uploading a jpeg concatenated with a zip, but I haven't seen this ICC profile trick before today.

[palunon]

Well, 4chan served you the original file, so you didn't need to evade image processing at all