Check Hreflang Tags
What is Hreflang?
Hreflang tags tell search engines which language or regional version of a page should be shown to users. They are useful for multilingual and international websites.
- Use valid language codes like en, en-US, de, fr-FR.
- Add x-default for fallback pages.
- Avoid duplicate hreflang values.
- Make sure alternate URLs are valid and indexable.