A software company translates its checkout page into German word for word. The text is correct, but orders drop. The reason is easy to miss: the page asks for a "State" in the address form, and German customers have none. They hit the wrong field, give up, and close the tab.
That little story explains the whole difference. Translation makes your words understood, while localization makes your product feel native. Both are useful, and many projects need a mix of the two.
What translation does
Translation converts text from one language to another while keeping the meaning intact. It is the right tool for contracts, reports, manuals, medical leaflets and legal papers, where accuracy matters more than adaptation.
A good translator still makes dozens of small decisions in every paragraph, but the structure and message of the source stay in place.
What localization adds
Localization goes further. It adapts formats, images, colours, examples, units, payment methods, legal notes and sometimes the offer itself. The goal is that a visitor in Lyon, Lagos or Lima feels the product was made for them.
The overview of internationalization and localization shows how broad the field is, from date formats to right-to-left layouts.
Where the line falls
A legal contract should be translated. A homepage headline usually needs localization. A product manual sits in between: the instructions stay the same, but units, safety warnings and plug types change by country.
A quick test helps. If the reader only needs to understand, translation is enough. If the reader needs to trust, buy or act, localization is worth the extra effort.
Hidden details that sink launches
Dates, times, currencies and phone number formats are the obvious ones. Less obvious are names and honorifics, address layouts, colour meanings and humour. White signals purity in some markets and mourning in others, and a pun that works in English may be meaningless in Korean.
Images matter just as much. A stock photo of a family at a barbecue may feel warm in one country and out of place in another.
Search habits change by language
People do not search in other languages the same way they search in English. They use different words, different phrase lengths and different questions. Direct translation of keywords often misses the real demand.
That is why content for new markets should be built from local research. The article on localization SEO explains how to match your pages to what people actually type.
Which projects need which
Choose translation for legal, technical and regulatory material. Choose localization for websites, apps, games, marketing campaigns, onboarding flows and e-commerce pages. Choose a blend for training material, product documentation and investor communication.
When in doubt, ask your language partner to review a sample page and tell you how much adaptation it needs. A good partner will say so honestly, even if it means a smaller project.
How the workflow differs
Translation projects usually move from source text to translator to reviewer. Localization projects bring in more players: designers who adjust layouts, developers who handle string files, marketers who check tone and legal advisers who confirm local rules.
Because of that, localization needs a clear brief, a shared glossary and a style guide for each market. A translation agency with experience in both disciplines can coordinate these steps and keep terminology consistent.
Cost and time
Translation is typically priced per word and takes days. Localization costs more because it includes adaptation, testing and often design work, and it can take weeks. The price difference usually pays off when a product sells directly to consumers, since conversion rates improve when users feel at home.
Who should review the result
The best reviewer is a native speaker who lives in the target market and understands your industry. Ask this person to read the page as a customer, not as a proofreader. Comments such as "this sounds stiff" or "nobody says it that way" are the most valuable feedback you can get before launch.
Mistakes to avoid
Do not leave text inside images, because it cannot be edited easily. Do not hard-code dates or prices into sentences. Do not send a translator a page without context, since a single word such as "book" can be a noun or a verb. And do not skip a review by a native speaker who lives in the target market.
Measuring the result
Track conversion rate, bounce rate and support tickets per language before and after the project. Compare organic traffic for local keywords after a few months. If numbers rise, the adaptation is working. If not, review tone and search terms first.
Keep a living style guide
Each decision you make for a market should be written down: how formal the tone is, how prices are shown, which terms are never translated. A one-page guide per language saves time on every future project and helps new team members get up to speed.
Start small
You do not need to localise everything at once. Pick one market, one product page and one campaign. Learn what resonates, document the decisions in a style guide and expand from there.
The short answer
Translate what must be exact. Localise what must persuade. Most growing companies end up doing both, and the earlier they decide which is which, the fewer surprises they face when they enter a new market.
