Disclaimer: isSemantic.Internet won't assure that your structured facts will show up in almost any internet search engine results, regardless of whether your site is marked up properly In accordance with validation results. In 2009, Google more refined snippet results by introducing “rich snippets.” Rich snippets serve as a “sneak preview” https://addons.prestashop.com/fr/seo-referencement-naturel/31857-seo-automatique-google-rich-snippets-json-ld-open-graph.html