You can set the canonical version of the pages as well as you can optionally change the domain URL of the canonical link.This extension is an enhanced version of the best selling extension "Canonical Links for OpenCart". An additional feature has been added to this extension for those who have the requirement to modify or manipulate the domain preference of the canonical URL...
A canonical tag is a way of telling search engines that a specific URL represents the master copy of a page. Using the canonical tag prevents problems caused by identical or “duplicate” content appearing on multiple URLs.Though OpenCart has in-built canonical tags, however, these canonical links are not 100% as per the standards of SEO. It is evident that a lot of opencart users are facing the issue of duplicate pages, duplicate title, duplicate meta-description in their go..