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The A/B Test Library

Real experiments. Real outcomes. Actionable patterns. Browse A/B tests with problem-to-solution framing, results, and recommendations for what to test next.

113 experiments
Winners, losers & inconclusive
Full statistical details
loser

Product: Product Page

Problem: The information hierarchy on the product may not match how users actually scan and process the content.

LayoutE-commerce
winner

Product: Product Page — A/B Tested Company Logos And A Smaller Add-To-Cart Button

Problem: The primary call-to-action on the product isn't converting at its potential — design, copy, or placement may be the bottleneck.

Social ProofE-commerce
winner

Product: Product Page

Problem: Visual elements on this product carry weight — they can build trust, communicate value, or add unnecessary noise.

ImageryE-commerce
winner+27.5%

Product Page: Urgency Countdown Clock

Problem: Without clear urgency signals, users delay their decision on the product page, leading to drop-offs and abandoned sessions.

Copy & MessagingE-commerce
winner+44.0%

Homepage: Social Proof Header (600K Facebook Fans)

Problem: Users on the homepage need validation from others before committing — without visible proof of success, they hesitate.

Social ProofE-commerce
winner+350.0%

Homepage: Visitor Segmentation by User Type

Problem: Users on the homepage need validation from others before committing — without visible proof of success, they hesitate.

PersonalizationE-commerce
winner+20.0%

Checkout: Marketplace Order Confirmation Upsell

Problem: Users can't quickly find relevant products or content on the checkout, leading to frustration and early exits.

LayoutE-commerce
winner+5.5%

Landing Page: Emotional Brand-Voice Copy in Subscription Funnel

Problem: Multi-step processes on the landing page can overwhelm users if they can't see how far along they are or how much is left.

Copy & MessagingE-commerce
winner+11.0%

Product Page: Product Debundling with Feature Bullet Lists

Problem: Users on the product page need validation from others before committing — without visible proof of success, they hesitate.

LayoutE-commerce
winner+4.0%

Product Page: Value Proposition Placement on Product Page

Problem: The headline on the product page may not resonate with what users actually care about or address their top objections.

Copy & MessagingE-commerce
inconclusive+30.0%

Cart: Express Checkout Button on Smart Cart

Context: The primary call-to-action on the cart isn't converting at its potential — design, copy, or placement may be the bottleneck.

FormE-commerce
inconclusive+17.5%

Product: Accordion Layout on Product Detail Page

Context: Each additional form field adds friction to the product, increasing the chance users abandon before completing their submission.

LayoutE-commerce
inconclusive+22.5%

Product: Subscription Copy Test on Product Detail Page

Context: The headline on the product may not resonate with what users actually care about or address their top objections.

LayoutE-commerce
inconclusive+125.0%

Multiple: Mobile Search Bar Visibility and Heatmap-Driven PDP Redesign

Context: Users arriving at the multiple can't efficiently find what they're looking for, increasing bounce rates.

Mobile UXE-commerce
inconclusive+14.0%

Multiple: Subscription Retention UX: Account Portal and PDP Optimization

Context: Each additional form field adds friction to the multiple, increasing the chance users abandon before completing their submission.

PricingE-commerce
inconclusive+20.0%

Multiple: Homepage and Search UX Overhaul with Smart Cart for Music Retailer

Context: Users arriving at the multiple can't efficiently find what they're looking for, increasing bounce rates.

LayoutE-commerce
inconclusive+80.0%

Multiple: Long-Term CRO Program with PDP Audit for Automotive Parts

Context: Users on the multiple don't feel confident enough to proceed — they need reassurance that their data and money are safe.

LayoutE-commerce
inconclusive+25.0%

Multiple: Mobile-First UX and Checkout Optimization for Candle Brand

Context: Users arriving at the multiple can't efficiently find what they're looking for, increasing bounce rates.

FormE-commerce
inconclusive+17.5%

Multiple: Product Page Redesign and Checkout Optimization for eBay

Context: Mobile users experience the multiple differently — smaller screens, touch targets, and limited attention require purpose-built design.

LayoutE-commerce
inconclusive+32.5%

Multiple: Mobile Conversion Parity Program for Women's Fashion Retailer

Context: Mobile users experience the multiple differently — smaller screens, touch targets, and limited attention require purpose-built design.

Mobile UXE-commerce

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