Decluttered mobile-first mini cart: +7.5% conversion rate, unproven
Test run byClean CommitCRO agency
Commentary byLiftArchiveOur analysis, not theirsRebuilding the mini cart mobile-first with less clutter lifted conversion rate by 7.5% and revenue per visitor by 9.9%, but we treat it as inconclusive.
Clean Commit ran this test for an anonymized Shopify store and published it in its A/B test library.
Across 35,480 visitors the result did not reach significance, and several layout changes shipped together.
- Conversion rate: +7.5%, with an 86.2% probability of beating the original. Not significant, so inconclusive.
- Revenue per visitor: +9.9%, and average order value +1.4%.
- Desktop conversion rose 14.1% and mobile 4.7%. Mobile revenue per visitor rose 12.0%.
- Add-to-cart rate: -2.0%, a small negative, possibly because cross-sells got less prominent.
The change
Smaller header and shipping area, no promo banner, cross-sells reworked.
Simplified mockup drawn by LiftArchive from the shared screenshots.
Control
The mini cart had a large header, a big free-shipping area and a promo banner.
Variant
A smaller header and shipping area, cross-sells moved and spaced out, the promo banner hidden, and subtotal, shipping and checkout kept in view.
Why it likely came out this way
Our reading of the result, not the practitioner's claim.
- Less header and promo space puts the subtotal and checkout button in view sooner.
- Spacing out cross-sell controls may have cut accidental taps on mobile.
- Toning down cross-sells may explain the small add-to-cart dip.
Caveats: Bundled test: five layout changes shipped together, so the result can't be credited to one element. It did not reach significance, and test duration was not shared.
Who ran it
Clean Commit ran this test for a Shopify store (anonymized) and published the results (Clean Commit A/B test library). The numbers are theirs; the summary and commentary on this page are ours.
Read the original case study on Clean Commit →
How to run this test on your store
- Hypothesis
- If we shrink the mini cart header and promo areas and keep checkout in view, then conversion rate will rise because shoppers face fewer distractions on mobile.
- Primary metric
- Conversion rate
- Guardrails
- Add-to-cart rate
- Average order value
- Who should test it
- Stores whose mini cart is crowded with banners, shipping bars and cross-sells. If yours is already simple, gains will likely be small.
Questions
Does a simpler mini cart increase conversions?
It may. Here a decluttered mini cart showed a 7.5% conversion lift, but it was not statistically significant.
Should cross-sells go in the mini cart?
They can raise order value, but they compete with checkout.
In this test, making them less prominent came with a small add-to-cart dip.
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