# Two-image product cards: +20% mobile CR, -12% on desktop

- Outcome: Won
- Page type: Collection page (Ecommerce)
- Elements: Product cards & quick add, Product images & gallery
- Test run by: [Blend Commerce](https://liftarchive.com/practitioners/blend-commerce/)
- Commentary by: LiftArchive (our analysis, not theirs)
- Original source: https://blendcommerce.com/blogs/ab-tests-shopify/increase-mobile-conversion-multi-image-product-cards
- Page: https://liftarchive.com/test/stone-creek-coffee-multi-image-product-cards/

Adding a two-image gallery to each product card on Stone Creek Coffee's collection pages lifted mobile conversion rate by 20% but cut desktop conversion by 12%. Blend Commerce ran this test for the coffee roaster. The change shipped on mobile only, and desktop kept its existing hover image.

## Result

**+20% mobile CR, -12% on desktop**

- Mobile conversion rate: +20%, with revenue per visitor +11% and add-to-cart rate +11%.
- Mobile estimate: about 89 extra orders a month, per Blend.
- Desktop conversion rate: -12% and revenue per visitor -7%, a clear loss.
- Desktop subscription revenue per visitor fell 49%, the largest negative in the test.

## Control

Collection product cards showed one image. Desktop users could hover to see a second, but mobile users had no way to.

## Variant

Each card showed a two-image gallery, with pagination dots on mobile and hover controls on desktop.

## Why it likely won (our reading)

- On mobile, a second image let shoppers judge a product without opening its page.
- Desktop already had a hover image, so the new controls added clutter rather than information.
- Results split by device show why one layout does not always suit both.

## Caveats

Results were opposite by device, so the change shipped on mobile only. The source does not share sample size, duration or confidence.

## How to run this test

- Hypothesis: If we show a two-image gallery on mobile product cards, then more mobile shoppers will buy, because they can see more of the product without leaving the collection page.
- Primary metric: Mobile conversion rate
- Guardrail: Desktop conversion rate
- Guardrail: Subscription revenue per visitor
- Guardrail: Product page view rate
- Who should test it: Stores where product cards show a single image on mobile and the second image adds real detail, such as packaging or product in use. Test devices separately; if desktop already has hover images, leave desktop alone.

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Credit: Blend Commerce ran this test and owns the result. Summary and commentary by LiftArchive (https://liftarchive.com/test/stone-creek-coffee-multi-image-product-cards/).
Usage: Free to use, quote and build on, with credit and a link: name the practitioner or organization that ran the test and link to its LiftArchive page. The results belong to the practitioners who ran and shared them; the summaries and commentary are LiftArchive's.