Multilingual SEO: How to Make Your Translated Website Rank in Every Target Language

Key Takeaways

• Translating website content is a necessary first step, but not sufficient on its own for multilingual search performance — technical SEO implementation is equally important.
• Hreflang tags tell search engines which language version of a page to serve to which users. Without them, translated pages may be treated as duplicate content and suppressed in rankings.
• URL structure for language versions (subdirectories, subdomains, or country domains) affects how domain authority is distributed across language versions and how search engines interpret geographic targeting.
• Keyword research for each target language must be conducted independently — the keywords users search for in French, German, or Spanish are not always direct translations of the English equivalents.
• Localised meta titles and descriptions in each target language improve click-through rates from search results pages and should be written by native speakers, not machine-translated.

A multilingual website that ranks well in its primary language but is invisible in search in every other language is a missed opportunity. Yet this is the position many UK businesses find themselves in after investing in website translation — the content is there, but the traffic is not. The reason is almost always the same: the translation was done, but the SEO implementation for each language version was not.

This guide covers the main elements of multilingual SEO that determine whether translated pages rank, and what needs to be in place for each language version of a website to perform in search.

Why Translated Content Alone Is Not Enough

Search engines index language versions of pages independently. A French version of your homepage at global-lts.com/fr/ competes in French search results separately from how your English homepage performs in English search results. The French page needs its own signals — correct technical implementation, locally relevant content, and localised on-page SEO — to rank for French queries.

Without the correct technical implementation, translated pages face two main risks. First, they may not be indexed properly, leaving them invisible in search entirely. Second, they may be identified as duplicate content — similar pages in different languages without clear differentiation signals — and suppressed or ranked lower as a result.

Hreflang: The Foundation of Multilingual SEO

Hreflang is an HTML attribute that tells search engines the relationship between different language versions of the same page. It specifies which language and, optionally, which regional variant each URL serves.

A correctly implemented hreflang setup achieves two things. It tells search engines which version of a page to show to which users — so French-speaking users in France see the French version, not the English one. And it signals to search engines that the different language versions are intentional variants of the same content, not accidental duplicates.

Hreflang tags are placed in the HTML head of each page, and each language version references all the others. A website with English, French, and German versions needs hreflang tags on every page that link to all three versions — including a self-referencing tag for the page itself.

Common hreflang implementation errors include:

• Missing return tags — every language version must reference every other version. If the French page references the English page but the English page does not reference the French page back, the implementation is broken.
• Incorrect language codes — hreflang uses ISO 639-1 language codes (en, fr, de) and optionally ISO 3166-1 country codes for regional variants (en-gb for British English, en-us for American English, fr-fr for French in France, fr-ca for French in Canada).
• Inconsistent URLs — hreflang tags must use the exact canonical URL for each page, including protocol (https), trailing slashes, and any query parameters that are part of the canonical URL. Inconsistencies cause the implementation to fail silently.
• Applying hreflang to non-translated pages — hreflang should only be applied to pages that exist in all the referenced languages. Pointing hreflang at a page that does not exist in a given language creates a broken reference.

For WordPress sites using WPML, hreflang tags are generated automatically when the plugin is correctly configured. For Shopify, Webflow, and other platforms, hreflang implementation varies — check your platform's multilingual documentation or have your developer implement it manually.

URL Structure for Multilingual Websites

The URL structure chosen for language versions affects how search engines interpret geographic targeting and how domain authority is distributed across language versions. The three main options are:

Subdirectories (e.g. global-lts.com/fr/, global-lts.com/de/)
The most commonly recommended structure for businesses without strong country-specific brand requirements. All language versions sit under the same domain, sharing its domain authority. Search engines treat subdirectories as part of the same website, so any authority built through backlinks to the main domain benefits all language versions. Subdirectories are technically straightforward to implement on most CMS platforms.

Subdomains (e.g. fr.global-lts.com, de.global-lts.com)
Each language version sits on its own subdomain. Subdomains are treated by some search engines as separate websites, meaning domain authority is not automatically shared. Subdomains can be useful when different language versions have significantly different content strategies or are managed by separate teams, but for most businesses subdirectories are preferable.

Country-code top-level domains (e.g. global-lts.fr, global-lts.de)
Separate domains for each country send a strong geographic targeting signal to search engines. This is the most technically complex and costly option, requiring separate domain registrations, hosting, and potentially separate SEO strategies for each domain. It is most appropriate for large businesses with significant presence in specific country markets.

For most UK businesses adding their first or second language, subdirectories on the existing domain are the right choice.

Keyword Research for Each Target Language

Effective multilingual SEO requires keyword research in each target language, conducted independently — not by translating English keywords.

Search behaviour differs between markets. The terms French users search for when looking for a translation agency are not necessarily French translations of the English terms "translation services" or "professional translation." Volume, competition, and intent differ by market, and the keyword that drives the most traffic in English may not be the highest-priority keyword in French.

Keyword research for each target language should consider:

• Search volume in the target language and country — not the volume of the English equivalent
• Competitor landscape in each market — who ranks for these terms in the target country, and what does their content look like
• Search intent — the same concept can have different intent in different markets. A term that attracts commercial intent searches in English may attract informational searches in another language
• Long-tail variants — in competitive multilingual markets, long-tail queries in each language often present better ranking opportunities than direct translations of high-volume English head terms

For businesses running multilingual content marketing, keyword research in each target language should inform not just the translated versions of existing English pages, but also what new content to create specifically for each language market.

Localised Meta Titles and Descriptions

Meta titles and descriptions for each language version should be written by native speakers with an understanding of search behaviour in the target market, not produced by directly translating English meta tags.

A meta title that is well-optimised for English search may not be naturally written or search-relevant in French. Word order, keyword placement conventions, and the terms users actually search for differ between languages. A natively written, locally relevant meta title outperforms a translated one in both rankings and click-through rate.

Meta descriptions do not directly affect rankings but significantly affect click-through rate from search results pages. A meta description written for a French audience — using natural French phrasing and addressing the specific concerns of that audience — will generate more clicks than a translated version of an English meta description.

On-Page Content Quality

Search engines assess content quality in each language version independently. A French page with thin, machine-translated content will not rank well in French search — regardless of how well the English version performs.

Human-translated content that reads naturally in the target language is the baseline for any multilingual SEO strategy. Beyond translation quality, the same on-page factors that affect English rankings apply to each language version: heading structure, content depth, internal linking between pages in the same language, and the relevance of the content to the queries it targets.

For businesses with multilingual blogs or content marketing programmes, content created specifically for each target market — addressing topics and questions relevant to that market — outperforms translated versions of English content in terms of both relevance and engagement signals.

Conclusion

Multilingual SEO combines correctly translated, naturally written content in each target language with the right technical implementation — hreflang, URL structure, and localised on-page optimisation. Neither element alone is sufficient.

Global LTS handles the translation and localisation layer for multilingual websites, with human translators producing naturally written content in each target language. Contact us to discuss your multilingual website project, or see our website translation services page for more detail.

For related reading, see our guides on website localisation vs website translation and how to choose the right CMS setup for a multilingual website.