Pinmarklet: Aspect Ratio is a Consideration

Landscape

Images that are wider than they are tall are counted as squares of their height.

Square

This image is 700x700, so it should sort higher than the preceding landscape image.

Banner

Images greater than 3x wider than they are tall are banners, and won't show in the grid.

Portrait

Images that are taller than they are wide get their full area score.

Giraffe

Images that are taller than 3x their width are only credited at 3x their height times their width.