hreflang="kw"

kw is a valid hreflang value for Cornish.

Language: Cornish (kw, ISO 639-1)

Example

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

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

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