> Seems arbitrary It's always going to be arbitrary to have an absolute measure given the diversity of sites. Large/slow images are going to be normal for phot

> Seems arbitrary It's always going to be arbitrary to have an absolute measure given the diversity of sites. Large/slow images are going to be normal for photography sites for example but worth knocking points off for coding sites. You're better off using it as a relative measure to see if the same site is improving when you make changes.