Hi! Seems `exif` now become like a standard de'facto for inserting and extracting metadata from image file. Curious if it can insert or extract metadata from `.gif`?
There is also technique called steganography which can hide information like [text](https://github.com/DominicBreuker/stego-toolkit) or [image](https://github.com/kelvins/steganography) inside the original image, what do you think if using that instead of exif? (by the way I hid some image in my steemit profile picture xD)