How to tell google which image to pick for share with google+?

Question

I'm working on the site z500.pl and for this url there is:

<meta property="og:image" content="http://z500.pl/images/logo.gif"/>

it's global but can be change per page. And when I share that url with google test here it pick avatars that appear somewhere on the page.

Is it possible to tell google which images should he use for sharring the url? Or maybe there is a way to exclude some images.

Answer 1

There is no way to exclude an image for the snippet. You can however use Schema.org microdata when you want a different image and Google+ will prioritize it.