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Hreflang Checker
Check hreflang annotations in a page's HTML for valid codes, self-reference, x-default, and duplicates.
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What this hreflang checker checks and how to act on it
An hreflang checker reviews the annotations that tell search engines which language or regional version of a page to show. This tool reads hreflang links in the HTML head and checks language and region codes, self-reference, x-default, duplicates, and absolute URLs.
hreflang only works when it is reciprocal: every alternate must link back. Run the checker on each language version to confirm return links. Use ISO language codes with optional ISO region codes, such as en-GB rather than en-UK, and keep hreflang consistent with each page's canonical.
How to use the hreflang checker
- Enter a page URL on a multilingual site.
- The tool reads hreflang links in the HTML head and checks codes, self-reference, x-default, and duplicates.
- Run it on each alternate URL to confirm return links.
What it does not check
- hreflang declared in HTTP headers or XML sitemaps.
- Return links on the other pages, unless you check them too.
Read the guide
Step-by-step explanations of what this tool checks and how to fix what it finds.