hreflang
HTML link attribute that signals language and regional variants of a page to crawlers for multilingual and multi-region targeting.
Definition
hreflang is an attribute used on <link rel="alternate"> tags to indicate which language or region a URL targets. Example: <link rel="alternate" hreflang="en" href="https://example.com/en/page" />. Each page should reference all language/region variants plus an hreflang="x-default" fallback. Search engines and AI systems use it to serve the correct variant to the user's locale.
Relevance to GEO
AI systems that surface content in a specific language prefer pages tagged with the matching hreflang. Correct hreflang improves the chance your content is retrieved and cited in the right locale.