Open Graph Protocol is usually a schema markup (It is usually called a vocabulary) created by Fb in order to mix and relate Website pages and make its rich representation within the social graph. In exercise, Open Graph enables Facebook's Like - Present greater information to search engines to boost https://bookmarkingdelta.com/story19446890/a-secret-weapon-for-prestashop-popup-on-exit-page-on-browser-tab-close-event