Reviews & star ratings on carts: A/B tests

4 A/B tests with real results, plus 9 ideas, shared by the practitioners who ran them.

A
→
B
+23% revenue
Distraction-free mobile cart redesign
CartLayout, fonts & visual designVWO
A
→
B
+9.5% click-through
Customer reviews inside the shopping cart
CartReviews & star ratingsBunzl Retail & Industry
A
→
B
+11.36% conversion
Reviews, Easy Returns and Free Shipping in cart
CartReviews & star ratingsConvertPolo
A
→
B
+11.0% conversion, lower revenue
Trust signals on the cart page
CartTrust badges & security sealsClean Commit
A
→
B
Idea, no result yet
Add a review and icon-text USPs inside the side cart
CartReviews & star ratings@DaveDiederen
A
→
B
Idea, no result yet
Add a Trustpilot badge below the side cart checkout button
CartReviews & star ratings@DaveDiederen
A
→
B
Idea, no result yet
Add reviews, USPs and upsells to the cart and checkout
CartReviews & star ratings@DaveDiederen
A
→
B
Idea, no result yet
Show customer photos and reviews in cart/checkout
CartReviews & star ratings@kasper_dolk
A
→
B
Idea, no result yet
Cart page: strip menu distractions, add photo review and 'Reserved for X' timer
CartReviews & star ratings@kasper_dolk
A
→
B
Idea, no result yet
Cart page: '15 min reserved' timer, free shipping shown, reviews, discount code
CartReviews & star ratings@kasper_dolk
A
→
B
Idea, no result yet
Build the cart around visible progress, clear math and reassurance
CartReviews & star ratings@DaveDiederen
A
→
B
Idea, no result yet
Use the cart to push to checkout with urgency, reviews and returns info
CartReviews & star ratings@kasper_dolk
A
→
B
Idea, no result yet
Switched to a drawer cart and added reviews under the checkout button
CartReviews & star ratings@joshtCRO