A test was conducted to transform the sticky image on product pages into a sticky Add to Cart bar. Discover the impact on conversion rates and user interaction.
Transforming the Sticky Add to Cart into a Persistent Bottom Bar
Goal
Conversion rate
Result
+3.7% Conversion rate
Category
Product Page (PDP)
Outcome
Inconclusive
Before
After
If we convert the sticky image into a sticky Add to Cart bar once the user scrolls past the primary CTA, then the conversion rate will increase because users always have a clear and accessible path to purchase, reducing friction during deep PDP browsing.
What We Changed
- Converted sticky image to a sticky Add to Cart bar.
- Added product title, price, text input field, and ATC button to the sticky bar.
- Ensured smooth transition without jump or flicker.
- Kept the sticky bar fixed 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.
+23.1%
Change in revenue per visitor
21.50%
Revenue change
+18.1%
Average order value
Key Learnings
- Making the purchase option always accessible increased conversion opportunities.
- Reduced bounce rates suggest improved user engagement.
- A clear and constant CTA can enhance user focus and interaction.
- Smooth transitions maintain a seamless user experience.
- Although we saw an uplift on mobile, desktop performance declined—so the next step is to rerun the experiment as a mobile-only test.
Detailed results breakdown
Add-to-cart rate change
+0.1%
Average order value
+18.1%
Click-through rate change
+17.0%
Lift in conversion rate
+3.7%
Change in revenue per visitor
+23.1%
Free Trial
Start with 3 experiments.
Zero cost.
Get a taste of our service. We'll analyze your store, pinpoint low-hanging fruit, design, implement and test solutions to lift your conversion rate in 30 days.
Who qualifies?
30,000+ Monthly sessions.
Minimum traffic needed to run statistically significant tests.
Running on Shopify or Shopify Plus.
Our specialty - we don't work with other platforms.
Investing in paid traffic.
We work with stores committed to growth, not hobbyists.
Ready to invest in systematic CRO.
You understand testing takes time - no magic bullets.
Why free?
The best proof is results. Three real experiments show you exactly how we work and whether it drives revenue for your specific store. You keep everything - no strings attached.
Our bet
We're confident enough in our process to invest our time upfront. If the tests work, you'll see the value in continuing at $5,950/month. If not, you got free optimization work.
Limited spots
We take only 4 free trials monthly to maintain quality. Each trial gets our full attention and expertise. If you qualify, secure your spot before this month fills up.
Other experiments we've run
Product Page (PDP)
Boosting AOV with Collar and Sleeve Bundle Promotion on PDP
Adding a bundle promotion near the Add to Cart button aimed to boost average order value. See how this change impacted customer behavior and sales.
+0.6% Revenue per visitor (RPV)
Homepage
Redesigned Homepage With Extra "Educational" Content
Adding extra content to get ahead of customer objections, particularly around "how does the product work", saw the bounce rate drop and clickthrough rates increase. Read the full write-up.
+3.1% Revenue per visitor (RPV)
Product Page (PDP)
Restructured Product Page Accordion Layout
We updated the product page layout to show key details and moved reviews higher. Discover the impact on conversion and engagement.
+35.6% Revenue per visitor (RPV)