On: How much information can a small image contain?

[chunkyks]

True, but the posed question was "how much information can a small image contain", not "how many unique images are there"

[H8crilA → chunkyks]

Those are the same things ...

https://en.m.wikipedia.org/wiki/Information_theory

[jstanley → chunkyks]

What's the distinction?

Specifying an element from a set of 2^n members seems equivalent to encoding n bits of information.