hreflang="co"

co is a valid hreflang value for Corsican.

Language: Corsican (co, ISO 639-1)

Example

<link rel="alternate" hreflang="co" href="https://example.com/co/" />

The code is case-insensitive for Google. The conventional spelling is a lowercase language, a title-case script and an uppercase region: co.

Without a region, the annotation targets every Corsican speaker regardless of country. Regional versions sit next to the language-only version in one cluster.