GEO & AI Search Glossary
hreflang
hreflang is the link annotation that tells search engines which language and regional versions of a page exist, so each user is served the right version.
It prevents international versions from competing with each other and consolidates signals across them. Every version must reference all others plus itself, with an x-default fallback.
Errors are endemic — missing return links, wrong codes, redirect targets. Audit with real crawls after every structural change, not assumptions.
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