ManageCMS – Canonical Links All in One v3.44 – Canonical Links for Joomla, K2, Virtuemart and EasyBlog
Joomla 3 canonicals are often incorrectly generated, and Joomla 2.5 does not output canonical links at all, which can result in many duplicate pages for your content. Other extensions solved this problem only partially or incorrectly. We applied our long experience with Joomla to create Canonical Links All in One, a comprehensive solution to rule them all!
You can also choose to automatically redirect users to your canonical page. We tweaked our plugin so that the most appropriate link is chosen, based on the structure of your menus.
If your website can be accessed with multiple domain names, you can set your preferred domain for the canonical links in options.
https://www.filecad.com/e467/ManageCMS - Canonical Links All in One v3.44 - Canonical Links for Joomla, K2, Virtuemart and EasyBlog.rar