Guides
Practical explanations of image formats, upload limits and the problems behind them.
Why exam photo uploads get rejectedSix causes account for almost every rejection, and none of them is about photography.Why HEIC files won't openApple switched, the rest of the world mostly did not. Here is what is actually going on.Getting photos through online form size limitsWhy exam and government portals are so fussy, and how to satisfy them without ending up with an unrecognisable photo.JPG, PNG, WebP or AVIF?Four formats, one decision. Here is the short version and the reasoning behind it.