hreflang="lb"

lb is a valid hreflang value for Luxembourgish.

Language: Luxembourgish (lb, ISO 639-1)

Example

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

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

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