Over 67% of Domains Using Hreflang Have Issues (Study of 374,756 Domains)

In total, we looked at issues on 374,756 different domains that used hreflang tags. 18% have pages missing self-referencing hreflang tagsSelf-referencing hreflang tags are included in the guidelines. If these broken pages don’t exist and you don’t plan to have them, it doesn’t really hurt anything—but you may want to remove the references anyway. Redirected pages included in hreflang tags are OK only if you have an auto-redirecting global version of the homepage. If both pages don’t reference each other, they can’t establish the connection and swap properly in the search results.