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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.

76 experiments
Winners, losers & inconclusive
Full statistical details
winner+5.3%

Checkout: Multiple Steps

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

LayoutCross-Industry
inconclusive

Checkout: Centered Forms & Buttons

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

FormCross-Industry
inconclusive

Checkout: Bulleted Reassurances

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

TrustCross-Industry
inconclusive

Checkout: Checkout Flow Simplification

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

NavigationCross-Industryn=206,500
inconclusive

Checkout: Standard Or Superscript Price Format

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

PricingCross-Industryn=175,677
inconclusive

Checkout: Optional or Confident Recommendation

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

PricingCross-Industryn=58,597
inconclusive

Checkout: Urgent Next Day Delivery

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

Copy & MessagingCross-Industryn=40,999
inconclusive

Checkout: Progress Bar

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

NavigationCross-Industryn=37,683
inconclusive

Checkout: Add More For Extra Incentive

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

FormCross-Industryn=36,284
winner+5.3%

Checkout: Grid Page Progress Bar

Problem: The first screen of the checkout must immediately communicate value — if it doesn't, users bounce before scrolling.

FormEnergy & Utilitiesn=33,413
inconclusive

Checkout: Field Explanations

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

FormCross-Industryn=26,534
inconclusive

Checkout: Pricing Comparison Table

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

PricingCross-Industryn=23,336
inconclusive

Checkout: Back Buttons

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

CTACross-Industryn=22,852
inconclusive

Checkout: Frequently Asked Questions

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

Social ProofCross-Industryn=18,871
inconclusive-2.8%

Checkout: Address Modal Mandatory

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

LayoutEnergy & Utilitiesn=17,487
inconclusive-3.2%

Checkout: Grid page/checkout

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

LayoutEnergy & Utilitiesn=15,941
inconclusive

Checkout: Easiest Fields First

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

FormCross-Industryn=9,626
winner+5.7%

Checkout: Mobile Checkout

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

CTAEnergy & Utilitiesn=8,994
inconclusive

Checkout: Trust Seals

Context: Visual elements on the checkout aren't doing enough to communicate value, build trust, or guide users toward the next step.

Social ProofCross-Industryn=7,986
inconclusive

Checkout: Autodiscounting

Context: Coupon and promo code fields on checkouts can distract users — they leave to hunt for codes, reducing completion rates.

FormCross-Industryn=6,121

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