In additon to elisolution's solution higher than, this also checks no matter if we are actually on the home web page (not simply whether the canonical was set or not). I tested this solution a little bit and in terms of I am able to see, it really works as expected. https://addons.prestashop.com/en/seo-natural-search-engine-optimization/31857-automatic-google-rich-snippets-json-ld-open-graph-seo.html