Hreflang and Geo-Targeting Done Correctly

Hreflang is an HTML attribute that tells search engines which language and geographic region a page is intended for. When implemented correctly, it ensures Google serves the right language version of your pages to users in each country. When it is missing or incorrect, Google may serve the wrong language version, which reduces click-through rates and increases bounce rates. For sites with multiple language versions, hreflang is one of the highest-impact technical SEO fixes available.

Language targeting uses two-letter ISO 639-1 codes (e.g. 'es' for Spanish) to indicate the language of a page regardless of country. Country targeting combines a language code with a country code (e.g. 'es-MX' for Mexican Spanish or 'es-ES' for Spain Spanish). For most multilingual sites, combining both signals gives the best results because it allows Google to serve Spanish-language content from the correct regional variant based on the user's location.

HTML head tags cannot be added to PDF or other non-HTML resources. For these files, hreflang must be declared either in the HTTP response headers (which requires server or CDN configuration) or in the XML sitemap using the xhtml:link extension. We cover all three methods and recommend the approach best suited to your infrastructure.