A customer sends you a warm, specific testimonial — exactly the kind you want to feature. There is just one snag: it has a typo, a missing comma, or a sentence that reads a little awkwardly. Now you are caught between two instincts. Polish it and it might no longer be "their words." Leave it and a sloppy error undercuts the very credibility the quote is supposed to build. The good news is there is a clear line between editing that is fine and editing that is not, and once you know where it sits, these decisions take seconds.
The principle: fix the form, never the substance
The test is simple. You may correct things that affect how the words look, but not things that change what the customer said or meant. A testimonial is a representation that a real person said something specific. Cleaning up a typo does not break that representation; rewriting their opinion does.
- Form — spelling, obvious typos, missing or stray punctuation, capitalization, a doubled word. Fixing these is expected and uncontroversial; the customer would almost certainly thank you.
- Substance — the claims made, the level of enthusiasm, the specific details, the meaning of a sentence. Changing these turns their testimonial into your copywriting, and that is not honest.
When you are unsure which side a given edit falls on, ask whether the customer reading the published version would recognize it as the thing they wrote. If yes, you are on the safe side.
What you may fix without asking
These are housekeeping corrections. Make them and move on:
- Clear typos: "teh" → "the," "recieve" → "receive."
- Missing punctuation that makes a sentence hard to read.
- Capitalization at the start of sentences or for proper nouns.
- A duplicated word ("the the") or an obviously dropped small word.
- Trimming with an ellipsis, as long as the trim does not change the meaning of what remains.
None of these alters the customer's message. They make the quote read as if the customer had a moment with a copyeditor — which is a favor, not a distortion.
What you must never change without permission
Stop and get the customer's sign-off before touching any of these:
- The claim itself — do not upgrade "it helped" to "it transformed our business."
- Specific facts or numbers — do not round "about 20%" up to "30%," and do not invent a figure that was not there.
- The tone or strength — do not add superlatives the customer did not use.
- Anything that changes meaning, even if it reads better your way.
If you find yourself improving the argument rather than the spelling, you have crossed the line. At that point the honest move is not a silent edit but a question.
When a quick check-in is worth it
Some cases sit in the gray zone — an awkward sentence you could rephrase, a place where you suspect the customer meant something slightly different, or a quote so rough that light cleanup is not enough. Here, a short message protects you and usually delights the customer: "We'd love to feature this — mind if we tidy up a couple of small wording things? Here's the version we'd publish: [draft]. Happy to use your original if you prefer."
Showing the proposed version does two things. It gets you explicit consent for the wording you will actually publish, and it gives the customer a chance to correct anything you misread. Most reply within minutes with a "looks great." That tiny step converts a risky unilateral rewrite into an approved, on-the-record quote.
A practical default
For the vast majority of testimonials, follow this rule: silently fix anything that is purely spelling or punctuation, and check in for anything that touches meaning, strength, or facts. When in real doubt, send the draft. It costs you one short message and buys you a quote that is both clean and unmistakably the customer's own — which is the only kind worth publishing.