Input is parsed without making a network request; components and risky assumptions are separated.
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Data & developer
Hreflang Tag Generator & Auditor
Validates BCP 47 language/region codes and absolute HTTPS URLs and reports missing self-reference, duplicate languages, or x-default. It generates HTML link tags and an XML sitemap xhtml:link draft.
✓ Free✓ No account✓ In-browser
QUICK ANSWER
What does this tool do?
Generate reciprocal hreflang tags and sitemap entries from locale URL mappings.
APPLICATION AND DECISION GUIDE
Hreflang Tag Generator & Auditor: method and usage
Validates BCP 47 language/region codes and absolute HTTPS URLs and reports missing self-reference, duplicate languages, or x-default. It generates HTML link tags and an XML sitemap xhtml:link draft.
the URL, HTTP headers, cURL command, API definition, or web configuration requested by the tool Confirm the shape first with a small example containing no personal data.
normalized web configuration, a component inventory, and actionable review notes
Practical steps
- Enter one `language|absolute URL` mapping per line.
- Generate tags and fix code or URL warnings.
- Verify the identical reciprocal cluster appears on every language page.
comparison with the current standard and real server behavior in an authorized test environment
Verify schema, encoding, and data-loss assumptions in the target system.
Suitable use cases
- Publishing multilingual pages
- QA for hreflang clusters
- Preparing sitemap alternates
LEARN THE WORKFLOW
Guides for this tool
SEO, AEO, and GEO for Tool Pages: Utility Comes First
Build working demos, original guidance, correct language signals, and honest limits instead of multiplying keywords.
Read guide →Technical SEO Workflow: Slugs, Robots.txt, Hreflang, FAQ, and UTM
Combine crawl access, canonicals, language clusters, visible structured data, and campaign URLs in one auditable process.
Read guide →ABOUT THIS TOOL
Frequently asked questions
What input does Hreflang Tag Generator & Auditor accept?+
the URL, HTTP headers, cURL command, API definition, or web configuration requested by the tool Enter one `language|absolute URL` mapping per line.
What does Hreflang Tag Generator & Auditor return?+
normalized web configuration, a component inventory, and actionable review notes Input is parsed without making a network request; components and risky assumptions are separated.
How should I validate Hreflang Tag Generator & Auditor output?+
comparison with the current standard and real server behavior in an authorized test environment
Does Hreflang Tag Generator & Auditor send or store input on a server?+
Tool input is processed in the active tab. Saving to the Workstation or transferring to another tool is a separate choice. Consider browser extensions and shared devices separately; the privacy page explains advertising and network connections.