For those who have non-HTML pages on your internet site, such as PDFs or spreadsheets, you received’t have the capacity to apply hreflang while in the of your HTML mainly because it doesn’t exist.  Introducing this code to every web page of your internet site is most likely inconvenient and https://addons.prestashop.com/it/seo-indicizzazione-naturale/31857-google-rich-snippet-automatico-json-ld-open-graph-seo.html