Google Redefines External, Internal Links in Webmaster Tools

In an attempt to provide more accurate link data in Webmaster Tools, Google is recategorizing links from subdomains as internal links and the www and non-www versions of a site are considered the same site. Total link counts won’t change.

As an easy example, a link from to previously would have been considered an external link. Now that link will be reported as an internal link.

As Google explained:

“Most people think of and as the same site these days, so we’re changing it such that now, if you add either or as a site, links from both the www and non-www versions of the domain will be categorized as internal links. We’ve also extended this idea to include other subdomains, since many people who own a domain also own its subdomains—so links from or will also be categorized as internal links for”

Google shared this table to illustrate how the new external vs. internal link categorization works:


The big question now is whether subdomains could negatively impact the main domain and how big an influence Google’s link reorganization will have on organic rankings (if any). Interestingly, HubPages split up its site into numerous subdomains in an attempt to recover traffic lost traffic from Google’s Panda update.

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