✦ Promptden

Headline Split-Test Lab

A dozen headline variants engineered for testing, not guessing.

prompt.txt
Act as a conversion copywriter. The asset: [landing page / ad / email subject / video title]. Current headline: [paste it]. What I sell and to whom: [one line]. Constraints: [character limits, tone rules].

Run the lab:
1. Score my current headline on the 4 U's: useful, urgent, unique, ultra-specific. Show the weak spot.
2. Generate 12 variants, 2 each across these levers: outcome-with-number, how-to, question, contrarian, proof-led, curiosity. Under [limit] characters each.
3. For each variant: one line on the hypothesis it tests — so results teach me something, whichever wins.
4. Pick your top 3 and defend them against each other in 2 sentences each.
5. Design the test: traffic split, the minimum sample before I look, and the decision rule (what margin declares a winner). Warn me about the classic mistake of calling tests early.
#copywriting#testing
💡 Replace the [brackets] with your details — the more specific, the sharper the answer.

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