Adding clickable size buttons to product cards on desktop streamlined the shopping process, enhancing the add-to-cart rate.
Clickable size buttons on collection pages


If product cards show sizes on hover, then the add-to-cart rate will increase because customers can add items directly from the collection page.
What We Changed
- Made size buttons appear on hover on desktop product cards.
- Enabled direct add-to-cart from collection view.
- Displayed out-of-stock sizes as disabled.
The Results
We dig through every data source to map what's actually broken. By the end, there's no confusion.
Add-to-cart rate change
Add-to-cart rate change
Click-through rate change
Key Learnings
- Direct add-to-cart options increased user engagement and convenience.
- Displaying sizes on hover reduced bounce rates by keeping users on the page.
- The streamlined process improved the add-to-cart rate significantly.
- The easy access to add to cart, may have reduced the exploration, and in result AOV and RPV data
Detailed results breakdown
Add-to-cart rate change
+29.7%
Average order value
-10.4%
Click-through rate change
+11.0%
Lift in conversion rate
+0.0%
Change in revenue per visitor
-10.4%
Start with 3 experiments.
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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.
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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.
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Other experiments we've run
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Homepage
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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.
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Product Page (PDP)
Product Page AOV-Focused Redesign
A product page redesign focused on increasing average order value lifted AOV by 19.7% but decreased conversion rate by 9.9%.
+19.70% (AOV) AOV