Markup is usually easily checked via schema markup tests Resource. It will require a while for rich snippets to look in search engine results, in order that they will not be displayed straight away. Having said that, product and class rich snippets will appear only soon after Google indexes the https://addons.prestashop.com/de/seo-suchmaschinenranking-optimization/31857-automatische-google-rich-snippets-json-ld-opengraph-seo.html