XF 1.5 open_graph_meta

[jeancarlos]

<meta property="og:site_name" content="{$xenOptions.boardTitle}" />
<xen:if is="{$avatar}"><meta property="og:image" content="{$avatar}" /></xen:if>
<meta property="og:image" content="{xen:helper fullurl, @ogLogoPath, 1}" />



meta property="og:image"

Image item description

 

[xenfans]

Not sure what you're asking, but perhaps if you want to know how to change them, this info might help?
http://tutorialsave.com/how-to-set-attachment-images-og-facebook-xenforo/
Sorry if I misunderstand you.