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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.

64 experiments
Winners, losers & inconclusive
Full statistical details
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
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
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
inconclusive

Checkout: Complementary Upsell

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

PricingCross-Industryn=6,079
inconclusive

Checkout: Auto Suggest

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

PersonalizationCross-Industryn=4,735
inconclusive

Checkout: Testimonials

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

Social ProofCross-Industryn=3,333
inconclusive

Checkout: Layout Optimization

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

LayoutEnergy & Utilitiesn=3,144
inconclusive

Checkout: Fewer Form Fields

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

FormCross-Industryn=2,286
inconclusive

Checkout: Single Or Double Column Form Fields

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

FormCross-Industryn=2,143
inconclusive

Checkout: Floating Labels

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

FormCross-Industryn=2,073
inconclusive

Checkout: Headline & Copy Test

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

PricingCross-Industryn=2,052
inconclusive

Checkout: Currency & Taxes

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

PricingCross-Industryn=1,702
inconclusive+0.9%

Checkout: Step 4 - Authorization Clarity and Prominence

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

CTAEnergy & Utilitiesn=1,174

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