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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.

275 experiments
Winners, losers & inconclusive
Full statistical details
inconclusive

General: Temporary Sign In

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

LayoutCross-Industry
inconclusive

Checkout: No Commitment Default

Context: Friction during the checkout process causes users to abandon right when they're closest to converting.

CTACross-Industry
inconclusive

Product: Action Button

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

CTACross-Industry
inconclusive

General: Consistent System Fonts

Context: Visual emphasis on the general may not be drawing attention to the right elements — size, color, and contrast guide the eye.

LayoutCross-Industry
inconclusive

Listing: Out Of Stock Or In Stock Products

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

LayoutCross-Industry
inconclusive

Signup: Forced Action

Context: The registration experience on the signup asks too much too soon, causing potential users to drop off.

LayoutCross-Industry
inconclusive

Listing: Already Viewed Label

Context: Form input design on the listing affects completion rates — label placement, validation timing, and field clarity all matter.

FormCross-Industry
inconclusive

Product: Conversational Filters on Product Page

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

NavigationCross-Industryn=3,080,311
inconclusive

Listing: Already Viewed Label

Context: Form input design on the listing affects completion rates — label placement, validation timing, and field clarity all matter.

Copy & MessagingCross-Industryn=2,452,026
inconclusive

Listing: Single Or Alternative Buttons

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

CTACross-Industryn=1,416,128
inconclusive

Product: Testimonials on Product Page

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

Social ProofCross-Industryn=1,317,945
inconclusive

Listing: Sticky Call To Action

Context: Key actions on the listing disappear as users scroll, creating a gap between intent and the ability to act.

CTACross-Industryn=1,057,325
inconclusive

Product: What It's Worth on Product Page

Context: How prices are displayed on the product directly influences perceived value and willingness to buy.

PricingCross-Industryn=1,052,531
inconclusive

Product: Sticky Call To Action on Product Page

Context: Key actions on the product disappear as users scroll, creating a gap between intent and the ability to act.

CTACross-Industryn=805,623
inconclusive

Listing: Confirmed Selection

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

NavigationCross-Industryn=801,039
inconclusive

Listing: Search Keyword Highlighting

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

PersonalizationCross-Industryn=738,295
inconclusive

Product: Money Back Guarantee on Product Page

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

TrustCross-Industryn=488,288
inconclusive

Product: Benefit Bar on Product Page

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

TrustCross-Industryn=481,189
inconclusive

Listing: Persistent Filters

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

LayoutCross-Industryn=441,738
inconclusive

Product: Fewer Or More Results on Product Page

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

NavigationCross-Industryn=428,454

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