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Audit hreflang alternate tags on any page. Detect missing x-default, invalid language codes, duplicate languages, missing self-referencing tags, and conflicts between HTML tags and HTTP headers. Critical for international SEO.
Best for
Use this tool when you need one sharp answer fast before opening a broader report.
The input and results are designed to stay readable and tappable on smaller screens.
This page targets both broad keywords and practical queries people use before they audit a specific domain.
Frequently asked questions
Yes — the hreflang Checker is 100% free with no signup, no account, and no usage limits. Just enter a URL and get instant results.
Our hreflang Checker runs live checks against the target website in real time. Results reflect the current state of the site at the moment you run the check — not cached or historical data.
hreflang tells search engines which language and regional version of a page to show to users. You need it if your site has content in multiple languages or targets different countries (e.g., en-US vs en-GB).
x-default specifies the fallback page for users whose language doesn't match any of your hreflang tags. It's typically your main/English page or a language selector page. Always include x-default when using hreflang.
No — if your site only targets one language and one region, hreflang tags are unnecessary. They're only needed when you have multiple language or regional versions of the same content.