Get metadata from Image File

Hey, the idea i’m trying to figure out is simple, but i think the solution I’m trying might not be the best.

Every week, I want my my game to get a PNG from a server. This file is an image with transparency and a description and a color code in it’s metadata.
Is it possible to get the metadata from the png? Because if i right click the texture file ->Asset actions → Show metadata is greyed out, can’t select.

Does anyone have a suggestion for a solution or even an alternative?

The outcome should be 1 image with transparency, a description and a RGB Value (in plain text) in one file.

Thank you!