Certification badge near price and add to cart: +2.67% CVR
Test run byDave DiederenSyntra Labs
Commentary byLiftArchiveOur analysis, not theirsAdding a certification badge near the price and add-to-cart button lifted conversion rate by 2.67% in Dave Diederen's product page test. Revenue per visitor rose 2.17% and profit per visitor rose 2.55%. Average order value did not change.
- Conversion rate: +2.67% (1.58% to 1.62%). A small gain, with a wide range of -17% to +27%.
- Revenue per visitor: +2.17% ($1.80 to $1.84). Small, and the range includes a loss.
- Profit per visitor: +2.55% ($1.42 to $1.45). This was the primary metric in the tool.
- Average order value: no change ($114.12 vs $113.56). The gain came from more orders.
The change
A certification badge is added near the price and add-to-cart button.
Simplified mockup drawn by LiftArchive from the shared screenshots.
Control
The product page had no certification badge near the price or add-to-cart button.
Variant
A certification badge was added in the buy box, near the price and add-to-cart button. The post does not name the certification or show the badge design.
Why it likely won
Our reading of the result, not the practitioner's claim.
- a recognised certification removes a doubt right where shoppers hesitate, next to the price and the button.
- many brands bury certifications low on the page, so moving one up puts an existing asset to work.
- the effect was modest, which fits a reassurance cue rather than a reason to buy.
Caveats: The lift is small and the ranges are wide, so this result is not conclusive. Sample size, test length and the type of certification were not shared.
Who ran it
Dave Diederen (@DaveDiederen) shared this test on X. The numbers and screenshots are theirs.
View the original post on X
How to run this test on your store
- Hypothesis
- If we show our certification badge next to the price and add-to-cart button, then more shoppers will buy because a trusted mark removes doubt at the decision point.
- Primary metric
- Profit per visitor
- Guardrails
- Average order value
- Add-to-cart rate
- Revenue per visitor
- Who should test it
- Brands that hold a recognisable certification, for example in supplements, skincare or food, and currently show it low on the page. It will not help if the mark is unknown to your buyers.
Questions
Do certification badges increase conversions?
Slightly, in this test. Adding one near the price and add-to-cart button lifted conversion by 2.67%, though the range was wide.
Where should a certification badge go on a product page?
Dave Diederen recommends near the price or next to the add-to-cart button, where shoppers hesitate. That is the placement that was tested here.
Does a trust badge change average order value?
Not here. AOV stayed flat at about $114, so the gain came from more orders.
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