Generate international SEO hreflang tags and alternate URL links for global search ranking.
Execution runs 100% locally inside the browser sandbox using HTML5 Canvas, Web Cryptography Subtle API, and Web Workers. Zero egress.
Zero network latency. Operates completely offline with zero dependencies on third-party backend servers or cloud services.
Built according to official RFC specifications, cryptographic test vectors, and enterprise-grade data transformation standards.
Type your website root domain.
Add language codes (en, es, fr) and corresponding subdirectories.
Copy the generated <link rel='alternate'> tags to paste into your <head>.
x-default specifies the fallback URL for users whose language/region is not explicitly configured.
Yes, hreflang annotations must be bidirectional across all language variants.
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