What to Do When a Customer Sends a Testimonial in a Language You Don't Publish In

A customer sends you a genuinely great testimonial — and it is in Japanese, or German, or Portuguese, and your site is entirely in English. Now you have a small dilemma that feels bigger than it is. Translate it and you risk misquoting a real person or producing something that reads as marketing-smooth and slightly fake. Leave it as-is and most of your audience cannot read it. Drop it and you waste your best praise from a whole market.

None of those is the right default. Foreign-language testimonials are not a problem to solve — they are proof you cannot buy, and handled honestly they signal reach and legitimacy that an all-English wall of quotes never will.

First, decide what job this quote is doing

Where the testimonial will live determines how you treat it. The same quote is handled three different ways depending on the audience.

• On a localized page for that market. If you have (or plan) a Japanese landing page, the Japanese testimonial belongs there in the original, untranslated. It is native proof for native buyers — the strongest possible signal.
• On your main English page. Here it needs a faithful translation, and the original should stay visible or verifiable so the quote does not read as invented.
• In a global "trusted around the world" block. Sometimes the language itself is the message. A row of quotes in five scripts says "customers everywhere" more convincingly than five English sentences ever could.

Knowing the job stops you from reflexively translating everything into flattened English, which is the most common and most damaging move.

The honest way to translate

If you do translate, the goal is fidelity, not polish. A testimonial that has been smoothed into perfect marketing copy loses the very texture that makes it believable — the same failure mode we describe in why your testimonials sound fake and the edits that fix it.

1. Translate for meaning, then have a native speaker check tone. Machine translation gets the literal sense but often lands the register wrong — too formal, too stiff, or accidentally comic. A quick human pass catches what an engine cannot.
2. Never upgrade the praise. Translation is where exaggeration sneaks in. If the customer said "very helpful," do not let it become "life-changing" because the stronger word exists in English. You are quoting a person, not writing a headline.
3. Send the translation back for approval. This is the step most companies skip and the one that protects you most. The customer said something specific in their own words; they are the only authority on whether your English version still means it. Approval also makes the quote safe to attribute publicly.

Keep the original in view

The single most important move for authenticity: do not hide the source language. When an English reader sees only a translated quote, they have to take your translation on faith. When they can see the original — even if they cannot read it — the testimonial reads as real, because no one fabricates a quote in a language they then have to translate for themselves.

Practical ways to keep the original visible:

• Show the original text with the translation directly beneath it, clearly labeled "translated from [language]."
• Link to the original source — a public review, a LinkedIn post, a case study — so the claim is verifiable. Verifiability is the backbone of trustworthy proof, which is why we treat writing a complete attribution line under every quote as non-negotiable.
• Keep the customer's real name, title, company, and location. A translated quote with a verifiable person behind it is proof; a translated quote from "a happy customer" is a slogan.

When the foreign language is the asset, not the obstacle

Reframe the whole situation. If you are trying to look like a serious, established product, testimonials in multiple languages are one of the fastest trust signals available. They quietly prove three things at once: you have real customers, those customers span markets, and you did not simply invent a page of uniform English praise.

A "customers worldwide" section that shows a Portuguese quote, a Korean quote, and a French quote — each with a real name and a translation on hover or below — outperforms the same claims made only in English, because the reader can see the reach instead of being told about it. That is placement doing persuasion, the same logic behind putting the right proof in the right slot on a SaaS homepage.

The rule of thumb

Treat a foreign-language testimonial the way you would treat any high-value quote: preserve what the customer actually said, make it verifiable, and place it where it does the most work. Translate faithfully and get it approved, keep the original in view, and — when you can — let the language itself become part of the proof. The instinct to flatten everything into English throws away the one thing that made the testimonial credible in the first place: that a real person, in their own words, meant it.