# Validating your value proposition with experiments > The line at the top of your homepage is what you believe makes you different. A test can tell you whether customers agree, and it's one of the few questions worth the sample even on a small site. - Source: https://bixlow.com/en/blog/validate-your-value-proposition-with-experiments - Language: en - Published: 2026-11-04T09:00:00.000Z - Updated: 2026-10-06T09:28:18.400Z - Author: fernando - Topics: value proposition, A/B testing, new brands, conversion optimization, audience targeting, guardrails, CRO - Publisher: Bixlow --- Every brand has a sentence it believes about itself: handmade, sustainable, fastest delivery, best value, designed in Spain. That sentence normally came from the founders, has normally never been tested, and normally sits at the top of the homepage doing the most important job on the site. It also happens to be one of the few things a small brand can test with something to show for it, because getting the value proposition right or wrong moves conversion a lot. ## Why this one is detectable The effects are big. Swap the main claim in your hero and you change what visitors think you're for. That goes well beyond a nudge, and a shift in how people understand the brand moves the numbers by amounts a small site can actually pick up. The answer also travels further than almost any other result. If your customers respond to "delivered in 24 hours" more than to "handmade in small batches", you'll rewrite your ads, your emails, the insert in the box and your product pages around it. Very few experiments pay out on that many surfaces. ## How to set it up Test claims, and leave wording alone. Each variant should be a genuinely different proposition, stated as clearly as you can manage. For a food brand, a sensible three-way test could look like this: - A, the control: the current message about craft and quality. - B, convenience: fast delivery, a subscription, nothing to think about. - C, price or value: more for each euro than the supermarket equivalent. Those are three different answers to "what is this brand for". Three ways of saying the same thing would be a copy test, and at small-brand volumes you'd never detect the difference. Three variants have a cost, though. Each one gets a third of the traffic and the bar for a result gets tighter. If your sample is thin, put two propositions head to head and test the third one later. ## Which metric The obvious primary metric is purchase. It's rare, but here it's usually the right choice anyway, because a proposition that wins on engagement and loses on revenue has told you something misleading. If your volume really can't support purchase as the primary, take the deepest funnel step you can measure reliably, such as checkout starts or add-to-cart, and put a firm guardrail on revenue per session. The specific risk in these tests is that a price-led claim pulls in more visitors who then convert worse. ## Plan the segment breakdown before you launch Usually we warn against slicing results after the fact. This is a case where you should decide the slices beforehand. Different acquisition channels bring people with different expectations. Someone arriving from a price-comparison search wants something different from someone who read about you in a magazine. Declare traffic source as a planned breakdown before the test starts. A common and useful outcome is that convenience wins for paid traffic and craft wins for organic. That's an instruction about who to show what, and acting on it is exactly what audience targeting by UTM is for. ## Change the claim, keep the page It's tempting to test three completely redesigned homepages. Don't: if B wins, you won't know whether it was the proposition, the layout, the photos or the button. Change the claim and whatever directly supports it, which means the headline, the subheading and the proof point underneath. Leave structure, imagery and calls to action exactly as they are. What you're testing is what you say, and the page is just where you say it. ## After the result A clear winner is where the work starts. Carry the proposition through ad copy, email subject lines, the opening lines of product pages and the packaging insert; if it only exists on the homepage, it's a headline and not much of a positioning. Then plan to test it again when your customer base changes in a meaningful way. The proposition that wins with early adopters is often not the one that wins with the more mainstream buyers who come after them, so a result from your first year has an expiry date. --- ## Meet our AI CRO agent What you just read, put to work by an agent: it understands your visitors, decides what to test or personalize, builds it on your site without a developer and tells you when a result is real. https://bixlow.com/en/ai-cro-agent