A/B Copy Variant Generator
Generate two properly structured A/B variants with single-variable testing — free, no sign-up.
The golden rule of A/B testing copy
Most marketers run invalid A/B tests without knowing it. If Variant A and Variant B differ in three ways, you'll never know which change caused the result. The single-variable principle is non-negotiable: change one thing, measure one thing.
Test one variable
Change only the headline angle, CTA, or value prop — not all three at once.
Keep everything else identical
Same offer, same layout, same audience, same traffic source.
Set a hypothesis first
"If Variant B wins, it means our audience responds more to urgency than curiosity."
Wait for significance
100+ conversions per variant minimum. Don't call a winner at 12 clicks.
Test your highest-traffic element first
Headlines and CTAs move the needle most. That's where to start.
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