A successful website localization project covers four layers: market and keyword research, a technical setup that search engines and browsers understand, content adapted to local language and culture, and testing plus ongoing maintenance after launch. US companies that work through these layers in order avoid the most common failures, such as broken layouts, language versions that never appear in search results and translated pages that quietly fall out of date. The checklist below organizes the work into five phases.
Phase 1: Strategy and scope
Decisions made here shape cost, timeline and results more than anything that follows. Bring marketing, product, legal, engineering and customer support into the same conversation early, because each team owns part of what a visitor in a new market will experience.
- Pick target locales by combining language and country, for example Portuguese for Brazil versus Portuguese for Portugal.
- Prioritize pages by traffic, revenue and lead generation. Product, pricing, contact and top landing pages usually come first.
- Decide what stays in English, such as an archive of older blog posts, and make that choice deliberately.
- Run local keyword research. People in each market search with their own phrasing, which is rarely a word-for-word translation of your English keywords.
- Review local requirements for privacy notices, cookie consent, consumer terms and product claims with qualified local counsel.
- Plan support capacity. A localized site generates inquiries in that language, so sales and service teams need a way to respond.
Phase 2: Technical foundations
Choose a URL structure
Google's Search Central documentation describes several ways to organize an international site, each with tradeoffs:
| Structure | Example | Strengths | Watch-outs |
|---|---|---|---|
| Country-code domain | example.de | Clear country signal; server location does not matter | Cost, availability, separate infrastructure; targets one country only |
| Subdomain | de.example.com | Easy to set up; hosting can differ by market | Users may not know whether "de" means a language or a country |
| Subdirectory | example.com/de/ | Easy to set up; low maintenance on one host | Single server location; harder to separate sites later |
| URL parameter | example.com?loc=de | None worth relying on | Not recommended by Google |
Implement hreflang correctly
Hreflang annotations tell Google which language and regional versions of a page exist. You can add them in the HTML head, in HTTP headers or in an XML sitemap. Google treats the three methods equally, so pick one rather than maintaining all three. Each version must list itself and every alternate, because one-way annotations are ignored. Use ISO 639-1 language codes with optional ISO 3166-1 Alpha 2 region codes, such as es-MX, and add an x-default entry for visitors whose language matches none of your versions.
Skip forced redirects
Google advises against automatically redirecting visitors based on a guessed language or IP address, and against using cookies to swap content on a single URL. Googlebot usually crawls from the US without sending an Accept-Language header, so automatic switching can hide language versions from search. Give every version its own URL and add a visible language selector instead.
Prepare code and design
- Use UTF-8 encoding everywhere, including databases, forms and email templates.
- Keep text out of images and hard-coded templates so it can be translated.
- Design flexible components that tolerate longer or shorter strings.
- Support right-to-left layouts if Arabic, Hebrew, Persian or Urdu are on your roadmap.
- Adapt forms for international names, addresses, phone numbers and postal codes.
- Offer the payment methods and currencies that customers in each market actually use.
Phase 3: Content and on-page SEO
- Localize titles, meta descriptions, headings, image alt text and structured data, not only body copy.
- Consider localized words in URL slugs; Google accepts them when they are UTF-8 encoded and properly escaped.
- Keep each page in a single language. Google recommends against pages that pair translated navigation with untranslated main content.
- Adapt calls to action, testimonials, case studies and imagery to local expectations.
- Use transcreation for slogans and headlines that rely on wordplay.
- Show local trust signals, such as in-market contact options, regional customer stories and certifications that matter in that country.
- Localize downloadable PDFs, brochures and spec sheets with professional multilingual DTP, so the files match the quality of the pages linking to them.
- Translate automated touchpoints too: order confirmations, password resets, cookie banners, chatbot replies and form error messages.
Phase 4: Quality assurance and launch
- Linguistic review: a native reviewer reads every page in context, on the live staging site rather than in a spreadsheet.
- Functional testing: forms, checkout, search, filters, transactional emails and error messages work in every language.
- Visual testing: layouts hold on desktop and mobile, with no truncated buttons or overlapping text.
- SEO checks: hreflang validates, canonical tags point to the correct version, and sitemaps include every locale.
- Analytics setup: reports can be segmented by locale, so you can compare performance across markets.
Phase 5: Maintenance after go-live
Many localized sites decay because English pages change and translations do not keep pace. Connect your CMS to a translation workflow, store approved segments in translation memory, maintain a living glossary, and set a service level for how quickly updates reach each language. Review local search performance every quarter and refine keywords as real query data comes in.
Governance matters as much as tooling. Name an owner for each locale, agree on who approves new copy, and decide which changes can go live in English first and which must wait for every language. Legal pages, pricing and product claims usually belong in the second group, because an outdated translation of those pages can mislead customers.
Metrics that show localization is working
Define success before launch so every market can be judged on evidence rather than impressions. Useful indicators include:
- Organic impressions and clicks for each locale in Google Search Console
- Conversion rate, average order value and lead quality by language version
- Bounce rate and time on page compared with the English site
- Support tickets and sales inquiries received in each language
- Share of traffic arriving on the correct language version from search
When one locale underperforms, compare its keywords, page speed, payment options and translation quality against your strongest market before cutting investment.
The domestic opportunity
Entering a new market does not always mean crossing a border. For 2019, the Census Bureau counted 67.8 million people in the country whose household language was something other than English, with Spanish leading the list. A Spanish, Chinese or Vietnamese version of your site can open a domestic segment using exactly the same checklist.
How ZED Localization helps your site launch
ZED Localization pairs linguists in 50+ languages with project managers who understand CMS exports, file formats and in-context review. Its localization team can handle website copy, metadata, downloadable files and supporting video as one coordinated project, following ISO-certified processes.
To scope a project, share your target markets and a list of priority pages through the quotation form.
