hreflang="zu"

zu is a valid hreflang value for Zulu.

Language: Zulu (zu, ISO 639-1)

Example

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

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

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