I don't think GPT-4o (or any of the other vision models) "see" at a high enough resolution to help here. The differences between high and low quality images are very slight - the text almost always remains legible in the smaller images, just with slightly more JPEG artifacts that are visible.

It may be possible to train a custom machine learning model that can identify the quality I'm looking for, but honestly it's very much a human judgement thing here.