In additon to elisolution's answer higher than, this also checks whether we are literally on the home web site (not simply whether or not the canonical was established or not). I tested this Alternative a little bit and as far as I'm able to see, it really works as predicted. Normally, https://addons.prestashop.com/it/seo-indicizzazione-naturale/31857-google-rich-snippet-automatico-json-ld-open-graph-seo.html