Question 1

What are the most common hreflang implementation errors?

Accepted Answer

The most common hreflang errors are: (1) Missing reciprocal links — page A references page B but page B does not reference page A back. (2) Invalid language codes — using "en-uk" instead of "en-GB" or "zh" when you need "zh-Hans" or "zh-Hant". (3) Missing self-referencing hreflang — each page must include a hreflang pointing to itself. (4) Hreflang URLs returning non-200 status codes — pointing to redirected or 404 pages. (5) Missing x-default tag — recommended for the fallback version when no other region matches. Any of these will cause Google to ignore the entire hreflang set.

Question 2

Can hreflang tags be implemented in the XML sitemap instead of the HTML?

Accepted Answer

Yes. Google supports three methods for implementing hreflang: HTML link tags in the , HTTP response headers (for non-HTML files), and XML sitemap entries. The sitemap approach uses within each block. The sitemap method is often preferred for large sites because it centralises management without modifying every page's HTML. All three methods are equivalent in Google's eyes — choose whichever is easier to maintain for your site architecture.

Hreflang Checker

What gets checked