You specify the principal URL as the online search engine may have difficulty pinpointing which a single needs to be the main URL.  The following tutorial will teach you how you can empower Canonical URLs in Prestashop one.5. Canonical URLs are employed to stop copy material and to indicate https://addons.prestashop.com/de/seo-suchmaschinenranking-optimization/31857-automatische-google-rich-snippets-json-ld-opengraph-seo.html