Free Tool
Hreflang Tag Checker
Validates hreflang tags for multi-language sites. Checks for return tags, correct language-region codes, and common implementation errors.
Note: Some checks require fetching external URLs, which may be blocked by CORS restrictions in the browser. For URLs that can't be fetched directly, try pasting the HTML source instead. Full functionality can be connected via a server-side API proxy.
Why this matters
Hreflang tags tell Google which language and regional version of a page to show to which users. Incorrect hreflang implementation causes users to see the wrong language version, hurts international SEO, and can prevent pages from indexing properly.
FAQ
Hreflang tags (rel="alternate" hreflang="x") tell search engines which language and regional version of a page to serve to different users. They're essential for multi-language and international websites.
If page A points to page B via hreflang, page B must point back to page A. These are return tags. Missing return tags are one of the most common hreflang errors and can cause Google to ignore your hreflang implementation.
Use ISO 639-1 language codes and optionally ISO 3166-1 alpha-2 country codes. For example: en (English), en-GB (English for UK), es-ES (Spanish for Spain), x-default (default for unspecified locales).
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