Rich snippets are enhanced search results which provide extra data to searchers within the contents of a webpage. Google and various search engines like yahoo use structured information, contained within the HTML of the webpage, to kind these snippets. The prestashop addon helps you to incorporate Open Graph and Twitter https://www.presta-addons-modules.com/en/front-office/prestashop-seo-webmaster-site-verification-for-search-engines.html