I'd like that every page for an image on Wikimedia Commons to list the size ratio of the image along with its actual resolution. E.g. if an image is 800x600 pixels, the description will list a ratio of 1.33:1.
(800 × 600 pixels (1.33:1), file size: 8.85 MB, MIME type: image/jpeg)
This could be useful for editors using multiple image templates and such.