Please note that isSemantic.Web does not validate markup which contains other vocabularies Moreover Schema.org; this sort of markup are going to be proven in Implementing rich snippet markups on your site allows Google’s algorithms to grasp greater what Every single webpage is about – an short article review or product https://addons.prestashop.com/pl/seo-pozycjonowanie-naturalne/31857-automatyczne-google-rich-snippets-json-ld-opengraph-seo.html