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Review Summary Placement A/B Test on Product Pages

Placing the rating and review count below the price shows this information earlier than placing it after the description.

  • Product page
  • Purchase conversion rate (CR)

Option A vs Option B

Where it sits is the variable; the element itself does not change.

Changed
Placement
Page
Product page
Difference
moved

Hypothesis

That may affect how visitors evaluate the product. Keep the review summary itself unchanged so the test measures its position, not the amount of social proof.

How to run this test

Primary metric

Purchase conversion rate (CR)

Compare purchases per assigned visitor when the review summary is moved higher on the page.

Other metrics

  • Add-to-cart rateCheck whether social proof changes the first purchase step.
  • Review section click-through rateTrack visits to full reviews; a click does not prove the summary was noticed.
  • Return rateTrack returns, but an unchanged rate does not prove expectations were accurate.
  • Page load timeMake sure the added component does not harm LCP.

What to check before and during the test

  • PlacementMove the same summary between just below the price and just below the description.
  • FormatKeep rating, count, wording and design unchanged.
  • Review volumeKeep product eligibility fixed and review predefined groups by review count.
  • NavigationKeep the behavior for jumping to reviews unchanged.
  • CategoryReview results within product categories.

Setup mistakes to avoid

  1. 1Keep eligibility by review count fixed throughout the test.
  2. 2Do not change placement and format together.
  3. 3Do not round ratings upward or overstate them.
  4. 4Do not hide negative reviews; that can undermine trust.
  5. 5On mobile, make sure the summary does not push the CTA offscreen.