It appears that Facebook and LinkedIn have differing standards for the og:image. On Facebook they advise that the image should be at least 200 x 200 pixels (square) see here However LinkedIn advise 180 x 110 pixels (rectangular) see here
Is there a way to target an og:image to either Facebook or LinkedIn seperately? What's the best way of doing this?
I'm trying to create a default thumbnail for the website home page which will let users share the home page in a nice manner. At the moment LinkedIn is cropping my og:image though Facebook and Google+ are sharing it nicely.