Transitioning the sticky product image to a sticky Add to Cart bar aimed to improve conversion rates by keeping purchase options visible during scrolling.
Sticky Product Customization Below The Fold


If we add a sticky Customization bar once the user scrolls past the first fold, then the conversion rate will increase because users will have a clear and accessible path to purchase, reducing friction during deep PDP browsing.
What We Changed
- Added sticky customization bar
- Ensured smooth transition to sticky customization bar.
- Positioned the sticky bar at the bottom of the screen.
The Results
We dig through every data source to map what's actually broken. By the end, there's no confusion.
Click-through rate change
Change in amount of clicks
visitors
Key Learnings
- The sticky bar improved visibility but did not translate to higher conversions.
- Increased click-through rates suggest more interaction but may not lead to purchases.
- Reduced bounce rate indicates higher engagement but not necessarily higher sales.
- Keeping purchase options visible was not enough to overcome other barriers to conversion.
Detailed results breakdown
Add-to-cart rate change
-10.2%
Average order value
-2.9%
Click-through rate change
+13.8%
Lift in conversion rate
-14.4%
Change in revenue per visitor
-17.1%
Start with 3 experiments.
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Who qualifies?
30,000+ Monthly sessions.
Minimum traffic needed to run statistically significant tests.
Running on Shopify or Shopify Plus.
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Investing in paid traffic.
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Ready to invest in systematic CRO.
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Our bet
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Other experiments we've run

Landing Page
Simplified Science Content
The science page was simplified to improve readability, resulting in increased conversions and reduced bounce rates. Learn how these changes impacted user behavior.
+19.6% Revenue per visitor (RPV)

Product Page (PDP)
Redesigned Customizer Boosts Engagement
A redesigned customizer aimed to improve user engagement and conversion rates for customized products. Discover how this change impacted key performance metrics.
+6.8% Conversion rate

Product Page (PDP)
Sticky Top Add to Cart Bar with Size Selector
Introducing a sticky Add to Cart bar increased engagement and conversion rates by keeping purchase options always visible. Read on to discover the impact.
+2.2% Add-to-cart rate