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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.

260 experiments
Winners, losers & inconclusive
Full statistical details
inconclusive

Checkout: Progress Bar

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

LayoutCross-Industry
inconclusive

Signup: Postponed Registration

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

FormCross-Industry
inconclusive

Listing: Search Keyword Highlighting

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

NavigationCross-Industry
inconclusive

Listing: Expanded Or Condensed Layout

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

LayoutCross-Industry
inconclusive

Checkout: Money Back Guarantee

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

TrustCross-Industry
inconclusive

Product: Carousel Vs Static Grid Images

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

ImageryCross-Industry
inconclusive

Product: Lead Magnets

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

Copy & MessagingCross-Industry
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-Industry
inconclusive

Product: Contrast Links & Buttons

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

Checkout: Frequently Asked Questions

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

LayoutCross-Industry
inconclusive

Product: Required Field Labels

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

FormCross-Industry
inconclusive

Signup: Optional Field Labels

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

FormCross-Industry
inconclusive

Checkout: Field Explanations

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

FormCross-Industry
inconclusive

Product: Lower Price Frames

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

PricingCross-Industry
inconclusive

Product: More Or Fewer Plans

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

PricingCross-Industry
inconclusive

Checkout: Less Or More Visible Prices

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

PricingCross-Industry
inconclusive

Checkout: Pricing Comparison Table

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

PricingCross-Industry
inconclusive

Listing: Links Or 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-Industry
inconclusive

Pricing Page: Company Logos

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

Social ProofCross-Industry
winner

Does Pinning a Mobile Checkout CTA Improve Conversion?

Sticky mobile CTAs can compress time-on-page meaningfully (~15% faster) without sacrificing engagement signals — users converted at a directionally higher rate AND moved through the page faster, suggesting reduced hesitation rather than rushed clicks. The result was shipped via 90/10 holdout monitoring rather than traditional 50/50 A/B inference — the high baseline (~85%) and limited mobile traffic made full A/B underpowered, so the team chose a holdout-validated rollout as the deliberate methodology. Bayesian P(variant > control) was ~0.90, supporting the directional ship call. Worth noting: external research flags sticky CTAs as context-dependent — they help when the primary action is buried below the fold, but can hurt on shorter pages where the original CTA is already visible.

CTAEnergy & Utilities

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