Talk to a humanOnce shoppers scrolled past the main add-to-cart button, the sticky product image turned into a sticky add-to-cart bar. See how sales moved on mobile and desktop.
A Sticky Add-to-Cart Bar After Scroll Shows a 3.7% Conversion Rate Lift
Goal
Conversion rate
Result
+3.7% Conversion rate
Category
Product Page (PDP)
Outcome
Positive signal
Before
After
If we turn the sticky image into a sticky add-to-cart bar once shoppers scroll past the main button, then conversion rate will increase because they always have a clear path to purchase.
What We Changed
- Kept the sticky product image in place while the main add-to-cart button is visible.
- Replaced it with a sticky add-to-cart bar once the main button scrolls out of view.
- Showed the product title, price and add-to-cart button in the bar, fixed to the bottom of the screen.
- Made the switch smooth, without a jump or flicker.
The Results
How the new version compared with the original, across all devices.
+3.7%
Conversion rate
+23.1%
Revenue per visitor
+18.1%
Average order value
Key Learnings
- Conversion rate rose 3.7%, with a 71.6% probability of beating the original: a signal worth acting on, not proof.
- Revenue per visitor rose 23.1% on an 18.1% rise in average order value.
- Mobile led, with conversion rate up 9.3% and bounce rate down 23.8%.
- On desktop, conversion rate fell 14.2%, so the bar may suit mobile layouts better.
Detailed results breakdown
Conversion rate
+3.7%
Revenue per visitor
+23.1%
Average order value
+18.1%
Click-through rate
+17.0%
Bounce rate
-21.9%
Free Trial
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30,000+ Monthly sessions.
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Running on Shopify or Shopify Plus.
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Other experiments we've run
Product Page (PDP)
Inconclusive
Sticky Bottom Add to Cart Bar
The mobile version of the website was adjusted to reduce the bounce rate. Learn how these changes impacted user engagement and conversion metrics.
+7.6% Add-to-Cart Rate
Homepage
Positive signal
A Redesigned Shop by Category Block Shows a 2.2% Add-to-Cart Rate Lift
The homepage "Shop by Category" block got a new layout, spacing and card styling on mobile and desktop. See how 38,490 visitors responded.
+2.2% Add-to-cart rate
Collection Page (PLP)
Inconclusive
Desktop Collection Hover Sizing Buttons
Adding clickable size buttons on desktop product cards enabled direct add-to-cart actions, streamlining the shopping experience.
+17.3% Add-to-Cart Rate