A/B tests on call-to-action buttons, links, and conversion triggers. See which CTA patterns drive more clicks and conversions.
Across 30 cta experiments, 33% resulted in a statistically significant win. Meanwhile, 5 tests underperformed the control.
15 experiments were inconclusive, meaning the difference between control and variant was not statistically significant. Inconclusive results are still valuable — they tell you what doesn't move the needle, so you can focus testing effort elsewhere.
These results come from real A/B tests with sample sizes ranging from hundreds to millions of visitors. Use them to inform your own cta testing strategy and avoid repeating experiments that have already been run.
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.
Context: The primary call-to-action on the listing isn't converting at its potential — design, copy, or placement may be the bottleneck.
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.
Context: The primary call-to-action on the product isn't converting at its potential — design, copy, or placement may be the bottleneck.
Context: The first screen of the checkout must immediately communicate value — if it doesn't, users bounce before scrolling.
Context: The primary call-to-action on the product isn't converting at its potential — design, copy, or placement may be the bottleneck.
Context: The primary call-to-action on the product isn't converting at its potential — design, copy, or placement may be the bottleneck.
Context: The primary call-to-action on the listing isn't converting at its potential — design, copy, or placement may be the bottleneck.
Context: The primary call-to-action on the product isn't converting at its potential — design, copy, or placement may be the bottleneck.
Context: The primary call-to-action on the product isn't converting at its potential — design, copy, or placement may be the bottleneck.
Problem: The primary call-to-action on the checkout isn't converting at its potential — design, copy, or placement may be the bottleneck.
Context: The primary call-to-action on the product isn't converting at its potential — design, copy, or placement may be the bottleneck.
Context: Friction during the checkout process causes users to abandon right when they're closest to converting.
Context: The primary call-to-action on the product isn't converting at its potential — design, copy, or placement may be the bottleneck.
Context: The primary call-to-action on the checkout isn't converting at its potential — design, copy, or placement may be the bottleneck.
Context: The primary call-to-action on the product isn't converting at its potential — design, copy, or placement may be the bottleneck.
Context: The primary call-to-action on the listing isn't converting at its potential — design, copy, or placement may be the bottleneck.
Context: The primary call-to-action on the product isn't converting at its potential — design, copy, or placement may be the bottleneck.
Problem: The primary call-to-action on the product isn't converting at its potential — design, copy, or placement may be the bottleneck.
Problem: The primary call-to-action on the general isn't converting at its potential — design, copy, or placement may be the bottleneck.
Problem: The primary call-to-action on the general isn't converting at its potential — design, copy, or placement may be the bottleneck.
Problem: The primary call-to-action on the product isn't converting at its potential — design, copy, or placement may be the bottleneck.
Problem: Each additional form field adds friction to the product, increasing the chance users abandon before completing their submission.
Problem: The primary call-to-action on the product isn't converting at its potential — design, copy, or placement may be the bottleneck.
Problem: The primary call-to-action on the product isn't converting at its potential — design, copy, or placement may be the bottleneck.
Problem: The primary call-to-action on the product isn't converting at its potential — design, copy, or placement may be the bottleneck.
Problem: The primary call-to-action on the listing isn't converting at its potential — design, copy, or placement may be the bottleneck.
Problem: The primary call-to-action on the home landing isn't converting at its potential — design, copy, or placement may be the bottleneck.
Problem: The primary call-to-action on the product isn't converting at its potential — design, copy, or placement may be the bottleneck.
Problem: The primary call-to-action on the signup isn't converting at its potential — design, copy, or placement may be the bottleneck.
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