Hreflang Checker
Inspect multilingual and multi-regional hreflang annotations, x-default fallback, BCP-47 syntax conformance, self-referencing presence, and reciprocal alternate links.
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International SEO & Hreflang Implementation Guide
Hreflang annotations inform Google and other search engines which localized URL should be displayed to searchers based on their geographic region and language preferences, preventing duplicate content confusion across international domains.
Self-Referencing & Reciprocity
Every localized page must include a self-referencing hreflang tag declaring its own language and URL. Furthermore, every listed alternate page must link back with matching annotations, forming an unbroken bi-directional cluster.
Canonical Tag Alignment
Each language variant must canonicalize to itself. Pointing the canonical tag of a Spanish version to the English version breaks hreflang indexing, because search engines will only index the canonical destination.
Hreflang Checker FAQs
Why do single-language websites not require hreflang tags?
Hreflang annotations are specifically designed to instruct search engines about alternative language or regional versions of the same content. If your website only serves one language and does not target specific international territories, hreflang is unnecessary, and its absence is completely normal.
What is a reciprocal hreflang link and why is it mandatory?
If Page A lists Page B as its Spanish alternate, Page B MUST include a reciprocal alternate link pointing back to Page A. Without reciprocal validation, Google ignores the relationship entirely to prevent malicious third parties from falsely claiming language associations.
What is x-default and is its absence considered an error?
The x-default hreflang tag designates the fallback landing page served to visitors whose language or region is not specifically targeted. It is an optional best practice; omitting x-default is informational only and does not represent a configuration defect if all alternate languages are covered.
What are the most common hreflang syntax errors?
The most common syntax error is using underscores (e.g. en_US) instead of standard BCP-47 hyphens (en-US). Other common mistakes include using a country code alone without a language code, or inverted notation (e.g. US-en instead of en-US).
What does "Unable to verify reciprocal status" mean in the report?
This status indicates that the target server timed out, blocked automated inspection via a bot protection firewall (such as Cloudflare Turnstile or Akamai), or returned a non-200 response. We report this truthfully as unavailable rather than falsely claiming a reciprocal failure.