hreflang="bs"

bs is a valid hreflang value for Bosnian.

Language: Bosnian (bs, ISO 639-1)

Example

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

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

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