Schema markup is usually a special code that is included to your web pages in a standardized way in order to explain its meaning for the computer systems. Since it has standardized composition, it really is also called structured data, and because it always appears as snippet of code, it https://addons.prestashop.com/it/seo-indicizzazione-naturale/31857-google-rich-snippet-automatico-json-ld-open-graph-seo.html