Hreflang="en-us": the ISO code with the language made use of to the web page, accompanied by the ISO code for your nation at which that webpage is aimed (the nation/region code is not really generally essential) Replicate material showing within the SERPs: This may lead to the dilution of link https://addons.prestashop.com/it/seo-indicizzazione-naturale/31857-google-rich-snippet-automatico-json-ld-open-graph-seo.html