March 5, 2026
Why experimentation is becoming an operating model for smart organizations
A conversation with Valentin Radu, founder of Omniconvert, on experimentation as an operating model, AI and sustainable digital growth. Read more
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‘C'est le ton qui fait la musique’ my mother used to say, ‘How you say it is often as important as what you say. Was she right? To answer that question, I looked at 117 online experiments of five companies in which we changed the wording of information on the Web site.
About such copy tests is often disparaged: ‘It's ‘just’ a copy change, how much of an effect can that have at all? Wouldn't we be better off working on that big redesign or new functionality?’
The results of the 117 online experiments we conducted show that this derogatory attitude toward copy-changes is unjustified. In 38 cases, the A/B testing for a significant increase in conversion. In other words, about 1 in 3 times, changing how it was said for a positive effect. This is similar to other types of changes.
In contrast, copy changes are a whole lot easier and faster to build and implement than larger (functional) changes on the Web site. You don't even need development with it. Looking at it this way, my advice is obvious: do more A/B testing with the wording of information on your website!
In this blog, I share a method for improving text on your website. The best way to do this is to write in your visitor's language.
Writing in your visitor's language is a knife that cuts on many different sides:
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To learn to write in the language of your visitors, it is advisable to regularly read what they write about you and what words they use to do so. For example, look at customer feedback, survey responses and customer reviews on your own website or at parties such as Trustpilot or Kiyoh. Regularly reading through all these customer voice data can take quite a bit of time. Fortunately, there is now ChatGPT to speed up this process considerably.
Step 1: Collect customer voice data
Collect the feedback, survey responses and customer reviews you can find in an Excel file. In addition to the customer voice data you have available, you can scrape online customer reviews from the websites of Trustpilot or Kiyoh, for example. You do this by using the tool Octoparse download and this step-by-step guide for scrapping customer reviews to follow.
Save your collection of customer voice data as a csv file.

Figure 1. Screenshot of scrapping customer reviews in Octoparse
Step 2: Use your customer voice data to train ChatGPT
Instruct ChatGPT to train itself with your collected data. To ensure that all data is included, it is best to use a ChatGPT splitter. Copy the contents of your csv file into the splitter. Then copy the split components into ChatGPT.
Step 3: Ask ChatGPT to (re)write text in your visitor's words
Now you can ask ChatGPT questions about the content of the customer voice data. What are the main benefits visitors experience with your product? What problems do they encounter?
Write a prompt asking ChatGPT to (re)write text in the exact words visitors use (see image).

Figure 2. Sample prompt asking ChatGPT to suggest USPs written in your own customers' words
Once you have gone through the steps, it is then a piece of cake to write different variants of USPs, product descriptions, headers and other text on your website. Which variant will yield the best results is not always easy to predict. Take, for example, the following variants of the same message on Van der Valk's website. Either one caused an increase in the number of hotel rooms booked. But which one?

Figure 3: Which wording of the same message results in more hotel rooms booked?
Fortunately, it takes little effort to set up an A/B test in which you only modify text. Most experimentation tools have a visual editor that allows you to run a copy test easily and quickly without any coding knowledge.
That way, you can find the exact wording that appeals most to visitors in no time and increase your website's conversion rate by speaking your visitor's language!
(PS variant B worked best for Van der Valk)