# Image thumbnails on mobile product pages: +6.14% conversion

- Outcome: Won
- Page type: Product page (Ecommerce)
- Elements: 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/mobile-pdp-image-thumbnails-improve-conversion
- Page: https://liftarchive.com/test/little-bible-stories-mobile-pdp-thumbnails/

Adding visible image thumbnails below the main product photo on mobile lifted conversion rate by 6.14% for children's book brand Little Bible Stories. Blend Commerce ran this mobile-only A/B test. Revenue per visitor rose 7.09%.

## Result

**+6.14% conversion**

- Conversion rate: +6.14%.
- Revenue per visitor: +7.09%.
- Abandoned checkout rate: -4.46%, a good sign.
- Add-to-cart rate and order value stayed flat.
- New visitors: conversion +8% and revenue per visitor +10%.

## Control

The mobile product gallery used small circles to move between images, so shoppers could not see what each image showed before tapping.

## Variant

A row of image thumbnails appeared below the main product image on mobile, showing all available pictures at once.

## Why it likely won (our reading)

- Heatmaps showed shoppers tapping the circles a lot, so they wanted to see more images.
- Thumbnails show what each image holds, so shoppers spend less effort exploring.
- First-time visitors who don't know the brand need visual reassurance, which fits the bigger lift for new visitors.

## Caveats

Mobile only, where 92% of the brand's traffic came from. Sample size, duration and significance were not shared.

## How to run this test

- Hypothesis: If we show image thumbnails under the main product image on mobile, then conversion will rise because shoppers can see all product views at a glance.
- Primary metric: Conversion rate
- Guardrail: Add-to-cart rate
- Guardrail: Page load time
- Guardrail: Revenue per visitor
- Who should test it: Mobile-heavy stores whose galleries rely on dots or swipes, especially where the inside or detail of a product matters. If you only have one or two images, thumbnails add little.

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Credit: Blend Commerce ran this test and owns the result. Summary and commentary by LiftArchive (https://liftarchive.com/test/little-bible-stories-mobile-pdp-thumbnails/).
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.