hreflang="kk"

kk is a valid hreflang value for Kazakh.

Language: Kazakh (kk, ISO 639-1)

Example

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

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

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