Hreflang checker
Free hreflang checker — alternates, x-default, and self-reference validation.
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Need reciprocal hreflang checks?
Single-page checks catch invalid codes and missing self references. Site crawls verify return tags between locale URLs.
Start free site crawlEnter a URL above to run hreflang checker
Results appear in seconds — no signup, no credit card.
How it works
- 1
Paste a URL
We read rel=alternate hreflang links in the HTML head.
- 2
Review cluster
See languages, targets, and common cluster issues.
- 3
Verify site-wide
Full crawls check reciprocal hreflang between locale pages.
What you get
- Alternate link table — all hreflang tags in one view
- x-default check — fallback locale validation
- Self-reference validation — reciprocal alternate links
- Locale code hints — BCP 47 formatting tips
Want ongoing monitoring?
FAQ
Common questions
What is an hreflang checker?
An hreflang checker reads rel=alternate hreflang links in your HTML and flags common international SEO issues — missing self references, invalid locale codes, duplicate values, and missing x-default on multilingual pages.
Does this verify reciprocal hreflang tags?
This free tool checks one page. To verify that alternate URLs link back (return tags) across your site, run a free multi-page crawl or a full workspace scan.
What is hreflang x-default?
x-default is a fallback alternate for users whose language or region does not match any other hreflang value. We recommend it when you declare two or more language alternates.
Is this hreflang checker free?
Yes. Unlimited single-page hreflang checks with no account. Workspaces add reciprocal cluster validation on every scheduled crawl.
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