When sharing a link, a post or a tweet on a Facebook is it possible to set an image using OG meta tags that is not actually on the page you are sharing.
Example: You share
example.com/mypage.html and has a img OG of
Does example.png actually have to be used on
mypage.html to be displayed (as a thumbnail for example) on Facebook? Must
mypage.html contain an <img> tag with a reference to this page? Is this mandatory?