What is hreflang in SEO?

hreflang annotations tell search engines which language or regional URL variant to show users.

hreflang is an HTML link relation (and sitemap extension) that maps equivalent pages across locales such as `en` and `de`. Correct annotations reduce duplicate-content confusion on multilingual sites.

Tentaco publishes localized `/use` and marketing routes; accurate hreflang helps Google serve the German page to DE users and the English page to EN users.