Canonical Link

Screenshots

Inserts canonical link code into header. After activation, from your WordPress Settings, change Permalinks to Custom Structure: /%postname%/ and you’re done, no further steps are needed. If you have any problems please visit: https://wordpress.org/extend/plugins/canonical-link/installation/ for full detailed instructions. The importance of the canonical link is to give Google a clean representation of what you want your URLs to look like and how you want Google to index them, this can also help to clear up duplicate page issues. http://bryanhadaway.com/super-simple-dynamic-canonical-link-code/