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Multi-Language Websites: The Five Decisions That Matter

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The decision that is hardest to reverse

URL structure. Everything else can be changed later at moderate cost; changing your language URL scheme after launch means redirecting every page in every language and rebuilding whatever authority they had.

StructureExampleBest when
Subdirectorysite.com/fr/Most businesses — simplest, inherits site authority
Subdomainfr.site.comGenuinely separate operations per market
Country domainsite.frStrong local presence and budget to build each separately

For most businesses expanding into two or three languages, subdirectories are the right answer and the cheapest to run.

Machine translation, human translation, or both

Machine translation is now good enough for informational content in major languages, and clearly not good enough for anything persuasive or legal. The sensible split is by page purpose rather than by principle.

  • Human translation: homepage, service pages, pricing, legal, anything that sells or commits you
  • Machine plus human review: blog and support content, where volume is high and stakes are moderate
  • Machine alone: rarely defensible for a business site, and never for anything a customer must rely on
Translated marketing copy that reads as translated undermines the credibility you were trying to build. If budget only covers human work for five pages, translate five pages properly and leave the rest in the original language.

Localisation is more than language

Currency and price formatting, date and address formats, phone number formats and country codes, units, legal and tax wording, and imagery that fits the market. A German page priced in pounds with a UK address reads as an export site, whatever the language.

Also consider what you are legally required to display in each market — company registration details, consumer rights wording, cookie handling — since these vary and are often the thing that gets missed.

The technical essentials

  1. hreflang annotations, correct and reciprocal, including an x-default
  2. One canonical per language version, pointing at itself
  3. Language switching that goes to the equivalent page, not the homepage
  4. No automatic redirection by IP — offer, do not force, or you trap the visitor who wants the other version
  5. Correct lang attributes so screen readers pronounce content properly

The ongoing cost people underestimate

Every content change now happens n times. A new service page in three languages is three translations, three reviews and three publishing steps. Teams that do not plan for this end up with language versions that quietly diverge, which is worse than not having them.

Decide the workflow before launch: who requests translation, who approves it, what the turnaround is, and what happens when the English changes and the French has not caught up yet.

Start narrower than you want to

One additional language, done properly, beats four done badly. Pick the market with the clearest demand, translate the pages that sell, measure enquiries for a quarter, and expand on evidence.

It is also worth checking whether your target market prefers to buy in their own language at all — in some sectors and regions, English-language B2B content is entirely normal and the translation budget would be better spent elsewhere.

Frequently asked questions

Does a multi-language site help SEO?

It can open genuinely new search demand, which is the real benefit. It does not improve rankings in your original language, and a poorly implemented setup with broken hreflang can cause the wrong version to appear in results.

Should we detect the user's language automatically?

Suggest, do not redirect. Automatic redirection frustrates travellers, multilingual users and anyone whose browser setting does not match their preference — and it can interfere with crawling.

What does a two-language site cost to add?

Technical implementation for a typical CMS site is usually £3,000–£10,000; translation is separate and depends on word count and quality level. The recurring translation workflow is the cost that matters over time.

Can we use a translation plugin?

For simple sites, plugins handle the mechanics adequately. Check how they store translations, whether you can export them if you leave, and whether they emit correct hreflang — some do not.

Keep reading

Planning to sell into another market?

Tell us which market and what you sell. We will tell you which pages actually need human translation and what the technical work involves.

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