In additon to elisolution's respond to earlier mentioned, this also checks whether we are actually on the house web page (not simply whether or not the canonical was established or not). I examined this solution a little bit and as far as I am able to see, it works as predicted. https://addons.prestashop.com/en/seo-natural-search-engine-optimization/31857-automatic-google-rich-snippets-json-ld-open-graph-seo.html