Supported formats Google Research supports structured data in the next formats, unless documented or else. Generally, we endorse employing a structure that is easiest so that you can implement and sustain (typically, that is JSON-LD); all 3 formats are Similarly wonderful for Google, as long as the markup is valid https://addons.prestashop.com/it/seo-indicizzazione-naturale/31857-google-rich-snippet-automatico-json-ld-open-graph-seo.html