GlossarySEO
What is international SEO?
Also called: multilingual SEO, multi-regional SEO, localization SEO
Definition
International SEO is setting up a site so search engines show the right language or country version to each searcher: a clear URL structure per locale, hreflang annotations and genuinely localized content.
International SEO, explained
Google's guide to multi-regional and multilingual sites separates two cases. A multilingual site offers content in more than one language. A multi-regional site targets users in different countries, possibly in the same language, like US and UK English with different pricing. Many sites are both. Each needs a way for Google to tell the versions apart and serve the right one.
The first decision is URL structure. Google lays out the options: country-code domains like example.de, subdomains like de.example.com, subdirectories like example.com/de/, or URL parameters, which it doesn't recommend. Country domains send the clearest country signal but cost more to run; subdirectories are the easiest to maintain and keep everything on one domain. Google says it determines a page's target locale mainly from ccTLDs and hreflang, along with other signals like local addresses.
Then connect the versions with hreflang, so Google knows /de/pricing is the German equivalent of /pricing, and give each version a self-referencing canonical. Google also advises against automatically redirecting users to another language version based on their IP or browser; let them choose, and offer a language switcher. Google says most of its crawls originate from the US and that it doesn't vary location to detect site variations, so IP redirects can hide your other versions from Google.
Finally, localize for real. Translated navigation around English content, or machine translations nobody reviewed, rarely perform. Start with the one or two markets that already show impressions in Search Console's country breakdown.
Why it matters for founders
Going international is a common growth step once a product works. A bad setup can leave your localized pages unindexed or outranked by your own English pages.
Example
Search Console shows growing impressions from Germany. You launch /de/ for your homepage, pricing and top five guides, with human-reviewed German, hreflang between versions and an x-default for the language picker.
Common mistakes
- Redirecting visitors by IP so Googlebot never sees other versions.
- Canonicalizing all translations to the English page.
- Machine-translating hundreds of pages without review.
- Using URL parameters like
?lang=defor locales.
Sources
- Google Search Central: Managing multi-regional and multilingual sites
- Google Search Central: Tell Google about localized versions of your page
Checked
Related terms
- hreflanghreflang is an annotation that tells search engines which language or regional versions of a page exist, so they can show each searcher the right one. Every version must link to every other version, including itself.
- hreflang x-default
x-defaultis a reserved hreflang value that names the fallback page for searchers whose language or region doesn't match any of your localized versions, often a language picker or your main version. - ccTLDA ccTLD is a two-letter country-code top-level domain, like
.de,.fror.uk. Google treats most as a strong signal that a site targets that country; some, like.ioand.ai, it treats as generic. - Subdomain vs subdirectoryA subdomain is a separate host like
blog.example.com; a subdirectory is a folder likeexample.com/blog. Google can rank both. Subdirectories are usually simpler to run and keep everything in one site.