hreflang

hreflang is an HTML attribute and link relationship used to indicate the language and optionally the region that a page is intended for (for example, en-US or da-DK). It helps search engines serve the correct regional or language version of a page to users.

Why it matters: Proper hreflang reduces duplicate content issues across language variants and improves relevance in international search and region-specific SERPs.

Quick tips:

• Use absolute URLs in your hreflang annotations.
• Include a self-referential hreflang for each page.
• Consider an x-default for pages that act as a language selector or fallback.

See also: sitemap.xml (can contain hreflang entries) and Canonical Tag.