Free Hreflang Checker

Why hreflang checks matter

Hreflang annotations help search engines serve the right language or regional page to the right audience. A strong checker should catch invalid language codes, duplicate targets, missing self references, and clusters where alternates do not return-link properly.

What this hreflang checker verifies

This audit reads the page's live alternate tags, validates the hreflang values, and checks whether multiple tags point to the same URL. It also samples alternate pages to see whether they include reciprocal return tags back to the current page.

That return-link check is important because hreflang is not just about adding tags on one page. Search engines are more likely to trust the cluster when alternate pages reference one another consistently.

Common hreflang implementation problems

Common issues include mixing language-only and language-region codes inconsistently, forgetting a self-referencing hreflang, omitting x-default, and pointing hreflang tags at URLs that redirect or are not canonical.

Hreflang can also break quietly after CMS or translation updates. A new locale may launch without joining the existing cluster, or an old locale may keep pointing at a retired path. That is why periodic audits are worthwhile.

Best practice reminder

Hreflang should be paired with strong canonicals and crawlability. If alternate URLs are blocked by robots.txt, canonicalized away, or hidden behind redirects, the cluster becomes weaker even if the tag syntax itself looks valid.