* Hreflang Tester
Hreflang Tester: Catch every error.
Free hreflang tester for international SEO. Validate return links, detect missing x-default, flag wrong language codes, and fix asymmetric hreflang across your multi-regional site.
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Trusted by SEOs and founders
Common questions
What does the hreflang tester check?
We verify hreflang tags across your international pages: return-link validation, language/region codes, x-default setup, and sitemap-level hreflang.
Can I use it for multi-regional sites?
Yes. We handle country-language combos (en-us, en-gb, de-de, etc.), detect missing return tags, and flag conflicting signals between HTML and sitemap.
What hreflang errors are most common?
Missing self-reference, no return link (asymmetric hreflang), wrong language codes, pointing to 404 pages, and missing x-default.