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Website Audit tool
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.
What it checks
Validate hreflang tags for multi-language websites.
Review crawlable content, metadata, headings, links, and page structure.
Spot issues that make pages harder to read, navigate, or trust.
Translate raw diagnostics into fixes your team can prioritize.
Methodology
Next steps
Interpretation
Use cases
Catch issues before a new page, redesign, or migration goes live.
Validate technical signals before blaming content quality or backlinks.
Create a repeatable check before sending client deliverables.
Popular checks
Next paths
Use these pages when the result points to a broader check, a fix workflow, or a related technical question.
Frequently asked questions
No. Enter a URL or domain and run the check in your browser. Some results can be partial if the target site blocks requests or hides the data being checked.
The hreflang Checker runs live checks against the target website. Results reflect what was reachable at the time of the test, so retest after changing DNS, redirects, headers, or page content.
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 are only needed when you have multiple language or regional versions of the same content.