Markup is often simply checked by means of schema markup testing Software. It will require a while for rich snippets to appear in search results, in order that they might not be shown right away. Nevertheless, product and category rich snippets will seem only just after Google indexes the articles. https://addons.prestashop.com/es/seo-posicionamiento-buscadores/31857-google-rich-snippets-automatico-json-ld-opengraph-seo.html