hreflang Cluster Validator
Paste hreflang rows and catch common alternate-language cluster mistakes.
Audit alternate-language clusters
hreflang tags work as a cluster: every regional or language version should point to the other versions and usually to an x-default URL. A small typo can make the entire group harder to trust.
It catches the errors that make hreflang silently fail: non-reciprocal links where a page points out but not back, a missing x-default, and malformed language or region codes.
This validator checks a pasted cluster for duplicate language codes, missing URLs, missing x-default entries, and weak URL formatting before you push tags live.
Private browser processing
The tool reviews only the cluster you paste. It does not crawl pages or prove reciprocal tags across the web.
Frequently Asked Questions
What does the hreflang cluster validator do?
It checks pasted language and URL rows for duplicate language codes, missing x-default, and malformed URLs.
Is this a crawler?
No. It formats or checks the text you paste and does not fetch live URLs.
Does it upload my data?
No. The tool runs locally in your browser.
Is this free?
Yes. It is free and requires no account.
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