wallet.dat inserted into .jpg image

I was wondering if anyone ever came across a situation where a wallet.dat file was encoded into an image like a .jpg?

I have this wacky idea of taking a wallet.dat file and somehow encoding it into an image. For example, you would like at a painting, but in the lower right corner, there would be a bunch of encoded jibberish out of which one could reconstruct the wallet.dat file?

Did anyone come across something like this before? How would one do this?

I’m wondering how to translate a wallet.dat into some kind of an image.