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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.

594 experiments
Winners, losers & inconclusive
Full statistical details
inconclusive

General: Source Personalized Testimonial

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

Social ProofCross-Industry
inconclusive

General: Source Personalized Headline

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

Copy & MessagingCross-Industry
inconclusive

General: Personalized Greeting Headline

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

Copy & MessagingCross-Industry
inconclusive

Listing: Infinite Scrolling Or Pagination

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.

NavigationCross-Industry
winner

Checkout: Filled Or Ghost Buttons

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

CTACross-Industry
inconclusive

Checkout: Tags, Badges And Structured Information

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

FormCross-Industry
inconclusive

Product: Product Highlights

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

LayoutCross-Industry
inconclusive

Product: Persistent Filters

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

NavigationCross-Industry
inconclusive

General: Localized Greeting Headline

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

Copy & MessagingCross-Industry
inconclusive

Product: Onboarding Callouts

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

LayoutCross-Industry
inconclusive

Product: Progressive Fields

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

FormCross-Industry
inconclusive

General: Where Should We Send Your Code

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

Product: Benefit 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: 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

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