RDFa is yet another format accustomed to embed rich metadata on web pages and documents. Allow’s use Google’s deal with as an example. We've really typically create ids to take care of duplicate entities, and it's improved rich snippets. e.g. cost and overview stars showing when they are defined in https://addons.prestashop.com/fr/seo-referencement-naturel/31857-seo-automatique-google-rich-snippets-json-ld-open-graph.html