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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.

7 experiments
Winners, losers & inconclusive
Full statistical details
loser

Product: CTA Button Optimization

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

CTAE-commerce
loser

Does Adding a Shopping CTA to the Main Navigation Drive Plan Views?

A CTA's click rate is not its conversion contribution. This test surfaced one of the most consistently underweighted patterns in CRO: behavioral diagnostics almost always tell a more honest story than the topline. The aggregate result looked like a tiny non-significant lift (+1%); the diagnostic revealed that of every 100 button clicks, only 6 reached the next funnel step. Two failure modes converged: (1) copy intent mismatch — the chosen label read as 'create account' rather than 'shop,' so a large share of clicks came from users trying to log in / manage their account from support and customer pages; (2) extra modal step before the destination page added friction without value. The aggregate lift was partially cannibalization from higher-converting paths. The transferable pattern: when introducing a global navigation element, validate the click→conversion ratio per source page, not just the topline. High clicks from low-intent pages creates a false signal of engagement that can mask poor performance.

CTAEnergy & Utilities
loser

General: Potentially Confounded Button Color A/B Test

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

CTAE-commerce
loser-13.5%

General: Ghost / Outline Buttons Lose to Filled Buttons

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

CTACross-Industry
loser

Listing: Listing Page — Ghost Buttons

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

CTATravel
loser

Home landing: CTA Button Optimization

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

CTASaaS
loser-3.1%

Landing Page: Get Started CTA

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

CTAEnergy & Utilitiesn=20,244

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