Say I have a PNG image file called image.png that I edit pixel by pixel that is 16 pixels wide by 16 pixels tall (16x16).
For my usage purposes, I need it to eventually be 3 times in size (i.e. 48 x 48) scaled using the nearest-neighbour scaling algorithm (all hard edges; no blurriness).
Currently, I do this manually and export two versions of the same asset, image.png (original) and firstname.lastname@example.org (48 x 48), every time I make changes, which is somewhat of a hassle. Is there a way to automate my system to generate email@example.com every time I save changes to image.png? (I am on a Mac).
I am using Gimp.