Language codes
Check language, script and region combinations.
Hreflang Tags Tester
Enter a page URL. Find language-tag errors and check whether alternate pages link back.
What we check
Find the language relationships that need attention.
Alternate URLs
Find invalid links and redirected destinations.
Self references
Check whether a page includes itself.
Return links
Check whether alternate pages link back.
Conflicting declarations
Find codes assigned to different URLs and repeated entries.
Honest coverage
See checked pages and unavailable or skipped checks.
Example results
en → tr
No issues found in checked annotations
tr → en
The alternate page does not link back. Add a matching hreflang link to the expected URL.
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Enter a page
Use a public URL with language alternatives.
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Check the links
Inspect HTML and HTTP declarations and directly linked alternatives.
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Fix and recheck
Review the evidence and expected URLs. Download JSON to keep the report.
Read the results
Status and coverage explain what was verified.
Valid
The inspected check passed.
Error
A confirmed problem needs fixing.
Warning
Review the declaration or incomplete coverage.
Unavailable
The check could not establish a result.
Continue your technical checks
Review related signals with these free tools.
Review metadata, canonical tags and page signals.
Validate XML sitemap structure and URL entries.
Enter a page URL. See its declared canonical and the fixes that need attention.
Hreflang Checker FAQ
Understand the checks and their limits.
What are the limits?
Up to 20 pages including the source, four parallel requests and 200 annotations per page within 25 seconds. Each page has a six-second request limit and a 2 MiB content limit; total decoded content is capped at 16 MiB. Incomplete checks are labeled. Valid annotations do not guarantee indexing.
What does this hreflang checker inspect?
It reads the supplied page's HTML and HTTP Link headers, then checks its directly declared alternate URLs for self references and return links. It does not crawl the whole website.
Is x-default required?
No. x-default is optional. Its absence is not an error; use it when you have a suitable default page.
Are sitemap and JavaScript annotations checked?
No. XML sitemap annotations and tags added by running JavaScript are outside this check. No HTML or HTTP annotations does not mean that your website has no hreflang.