Language codes are a necessary component for hreflang attributes. If hreflang attributes are missing the language code, they’ll need to be added accordingly.
Conflicting Hreflang and Canonical Hreflang tags should be used in conjunction with the canonical tag. The canonical tag and the hreflang tag for each version of a page should both point to the same U...
Your viewport tag may be missing the initial-scale attribute set. In this case, you’ll want to add it, or else you face creating a negative user experience. Learn how below.