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Marketing, Business & Creative

Free CRO & Testing Prompts for ChatGPT

A focused, hand-built library of CRO prompts for ecommerce and SaaS teams. Each one is structured for an LLM - role, task, constraints, output - so you can paste it into ChatGPT or Claude and get a usable experiment on the first try. Use them as written, or treat them as starting points to fork for your own playbook.

CRO promptscro & testing AI promptsChatGPT prompts for CROconversion optimizer AI prompts

Senior-grade Experiment

Produce a senior-level experiment ready to ship.

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Act as a senior conversion optimizer with 10+ years specializing in CRO for ecommerce and SaaS teams. I will give you the brief; you will deliver a ship-ready experiment.

Brief: [PASTE BRIEF HERE].
Constraints: must be specific, measurable, and grounded in CRO best practice. Avoid generic advice and obvious tips.

Deliver:
1. The full experiment (the actual artifact, not a description of it).
2. Three sharpening notes - what you would test or improve first.
3. One contrarian angle most conversion optimizers miss.

Ask one clarifying question only if a hard blocker remains; otherwise proceed with stated assumptions. Use plain language, no fluff, no filler. Quote evidence when citing sources.
CROseniordeliverable
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Critique my Experiment

Tear down an existing experiment and rebuild it stronger.

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You are a brutal but constructive conversion optimizer reviewing my experiment. Your job is to make it 2x better, not to be polite.

My experiment: [PASTE HERE].
Target conversion rate: [STATE TARGET].
Audience: ecommerce and SaaS teams.

Return:
- 5 specific weaknesses, each tied to conversion rate.
- A rewritten experiment that fixes them.
- A diff-style explanation of what changed and why.

Be blunt. Ask one clarifying question only if a hard blocker remains; otherwise proceed with stated assumptions. Use plain language, no fluff, no filler. Quote evidence when citing sources.
CROcritiquereview
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10 variants of a Experiment

Spin 10 distinct angles for the same brief.

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Generate 10 meaningfully different experiments from the same brief. Each variant must hit a different angle - not paraphrases.

Brief: [PASTE].
Audience: ecommerce and SaaS teams.

For each variant provide:
- Angle name (1-3 words).
- Hook / opening line.
- Full experiment.
- The single psychological lever it pulls (loss aversion, status, novelty, etc.).

End with your top pick and a one-line reason. Ask one clarifying question only if a hard blocker remains; otherwise proceed with stated assumptions. Use plain language, no fluff, no filler. Quote evidence when citing sources.
CROvariantsideation
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Apply a proven CRO framework

Run a named CRO framework end-to-end on my situation.

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Pick the single best-known CRO framework for this situation, name it, then walk me through applying it to my brief step by step.

My situation: [PASTE].
Goal: conversion rate.

Output:
1. Framework name + 1-line origin (so I can verify).
2. Each step labelled, with my inputs filled in.
3. The resulting experiment.
4. Where the framework breaks down - and what to swap in.

Ask one clarifying question only if a hard blocker remains; otherwise proceed with stated assumptions. Use plain language, no fluff, no filler. Quote evidence when citing sources.
CROframework
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Rewrite for a different audience

Translate the same experiment for three different audiences.

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Take my existing experiment and rewrite it cleanly for three distinct audiences. Keep the core promise; change the vocabulary, references, and emotional register.

My experiment: [PASTE].

Audiences:
A) ecommerce and SaaS teams (current).
B) A skeptic who has been burned before.
C) An expert peer who could spot fluff in two seconds.

For each: full rewrite + 2-line note on what shifted. Ask one clarifying question only if a hard blocker remains; otherwise proceed with stated assumptions. Use plain language, no fluff, no filler. Quote evidence when citing sources.
CROtranslationaudience
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Experiment in 50 words

Strip a experiment to its essential 50 words.

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Compress the strongest possible experiment into exactly 50 words. Every word must earn its place.

Brief: [PASTE].
Audience: ecommerce and SaaS teams.

Deliver:
- The 50-word experiment.
- The 3 words you would protect if forced to cut to 30.
- The cheap word you almost used and why you killed it.

Ask one clarifying question only if a hard blocker remains; otherwise proceed with stated assumptions. Use plain language, no fluff, no filler. Quote evidence when citing sources.
CROconstrainttight
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Experiment optimized for discovery

Make a experiment that ranks and gets shared.

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Produce a experiment that is optimized to be found and shared in the CRO space, not just to read well.

Topic: [PASTE].
Audience: ecommerce and SaaS teams.
Primary keyword/phrase: [PASTE].

Deliver:
- The experiment, with the primary phrase used naturally in title, opener, and one mid-point anchor.
- 5 semantic keywords you wove in (and where).
- 3 share-bait one-liners I could pull as social hooks.

Ask one clarifying question only if a hard blocker remains; otherwise proceed with stated assumptions. Use plain language, no fluff, no filler. Quote evidence when citing sources.
CROseodistribution
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Compare-and-rank matrix

Score options against the criteria that matter.

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Build a comparison matrix that ranks options for my CRO decision honestly.

Options: [LIST 3-6].
My priority: conversion rate.
Constraints: [PASTE].

Deliver:
1. A table - options × criteria - scored 1-5 with a one-line justification per cell.
2. The weighted winner.
3. The "wrong but obvious" pick most conversion optimizers would default to, and why it loses.

Ask one clarifying question only if a hard blocker remains; otherwise proceed with stated assumptions. Use plain language, no fluff, no filler. Quote evidence when citing sources.
CROcomparisondecision
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Speak as the customer persona

Hear the experiment through the audience's head.

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Embody a precise ecommerce and SaaS teams persona and react to my experiment as they would, out loud.

The persona: [PASTE 3-5 traits - role, fear, current solution, last frustration].
My experiment: [PASTE].

Deliver:
- 3 internal-monologue paragraphs as the persona reading the experiment.
- The exact line where they would close the tab - and why.
- 2 edits that would make them keep reading.

Ask one clarifying question only if a hard blocker remains; otherwise proceed with stated assumptions. Use plain language, no fluff, no filler. Quote evidence when citing sources.
CROpersonaempathy
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Edge-case enumeration

List the failure modes for a experiment before they bite.

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Enumerate the edge cases and failure modes that could break my experiment in production / in market / in front of ecommerce and SaaS teams.

My experiment: [PASTE].
Context: CRO.

Deliver:
- 12 edge cases, ranked by likelihood × damage.
- For each: the trigger, the symptom, and the cheapest mitigation.
- The single edge case I should design around first.

Ask one clarifying question only if a hard blocker remains; otherwise proceed with stated assumptions. Use plain language, no fluff, no filler. Quote evidence when citing sources.
CROedge-casesrisk
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Risks & mitigations

Pressure-test a plan before committing.

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Stress-test my CRO plan and surface what could go wrong, with mitigations.

Plan: [PASTE].
Stakes: conversion rate.

Deliver:
1. 7 risks across execution, market, technical, legal, reputational.
2. For each - probability (L/M/H), impact (L/M/H), and a mitigation that costs less than the worst case.
3. The 1 risk worth accepting and the 1 risk worth killing the plan over.

Ask one clarifying question only if a hard blocker remains; otherwise proceed with stated assumptions. Use plain language, no fluff, no filler. Quote evidence when citing sources.
CROriskplanning
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Reusable experiment template

Turn a one-off into a fill-in-the-blank template.

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Convert a great experiment into a reusable template I can fill in repeatedly.

Reference experiment: [PASTE].
What stays fixed: the structure and rhythm.
What varies: the inputs.

Deliver:
- The template with clearly marked [VARIABLES].
- A one-line description of each variable and example values.
- 2 worked examples using different inputs.
- The 1 line I should never let a junior change.

Ask one clarifying question only if a hard blocker remains; otherwise proceed with stated assumptions. Use plain language, no fluff, no filler. Quote evidence when citing sources.
CROtemplatereuse
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30-day ramp plan

Go from zero to shipping in 30 days.

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Design a 30-day plan to take me from where I am now to shipping a credible experiment in CRO.

Starting point: [PASTE].
Time available per day: [PASTE].
End state: conversion rate.

Deliver:
- Week 1-4 milestones (1 sentence each).
- Daily 30-minute focus for every day, grouped by week.
- The 3 things I should NOT do during these 30 days.
- The checkpoint that proves I'm on track at day 14.

Ask one clarifying question only if a hard blocker remains; otherwise proceed with stated assumptions. Use plain language, no fluff, no filler. Quote evidence when citing sources.
CROplanonboarding
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Diagnose from symptoms

Root-cause a CRO problem from the symptoms I see.

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I am seeing symptoms in my CRO work. Diagnose the most likely root causes and propose tests to confirm.

Symptoms: [LIST 3-6].
What I have already ruled out: [PASTE].
Tools available: [PASTE].

Deliver:
1. 3 candidate root causes, ranked by likelihood with a 1-line reason.
2. The fastest test to disprove each.
3. The order to run those tests, and stop conditions.

Ask one clarifying question only if a hard blocker remains; otherwise proceed with stated assumptions. Use plain language, no fluff, no filler. Quote evidence when citing sources.
CROdiagnosisroot-cause
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End-to-end workflow design

Design the experiment workflow conversion optimizers actually run.

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Design the end-to-end workflow a conversion optimizer would run to produce a high-quality experiment repeatedly.

Volume target: [PASTE].
Team size: [PASTE].
Quality bar: conversion rate.

Deliver:
- The workflow as a numbered sequence of steps.
- For each step: input, output, owner, tool, and time-box.
- Where to insert review gates without slowing the pipeline.
- The bottleneck step and how to relieve it.

Ask one clarifying question only if a hard blocker remains; otherwise proceed with stated assumptions. Use plain language, no fluff, no filler. Quote evidence when citing sources.
CROworkflowops
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Measurement plan & dashboard

Decide what to measure for conversion rate.

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Design a measurement plan for conversion rate in this CRO context.

Goal: conversion rate.
Audience for the dashboard: [PASTE].
Available data sources: [PASTE].

Deliver:
- The 1 north-star metric - defined precisely.
- 3 input metrics that move it, with formulas.
- 3 guardrail metrics so we don't optimize the wrong thing.
- Dashboard layout sketch (sections, charts, refresh cadence).
- The 1 vanity metric I am tempted to track and should not.

Ask one clarifying question only if a hard blocker remains; otherwise proceed with stated assumptions. Use plain language, no fluff, no filler. Quote evidence when citing sources.
CROmeasurementkpi
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Objection handling script

Pre-empt and counter the toughest objections.

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Build an objection-handling script for my experiment aimed at ecommerce and SaaS teams.

My offer / position: [PASTE].
The 3 most common objections I hear: [PASTE].

Deliver:
- For each objection: validate, reframe, evidence, ask.
- 2 objections I am probably not hearing but should expect.
- The single phrase to never say in response, and why.

Ask one clarifying question only if a hard blocker remains; otherwise proceed with stated assumptions. Use plain language, no fluff, no filler. Quote evidence when citing sources.
CROobjectionspersuasion
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A/B test design

Design a clean experiment with one hypothesis.

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Design an A/B test for my experiment with one clear hypothesis.

Current experiment: [PASTE].
Hypothesis (or what I'm curious about): [PASTE].
Traffic / sample size available: [PASTE].

Deliver:
- The hypothesis sharpened to one sentence.
- Variant A vs Variant B - only one variable changed.
- Primary metric and minimum detectable effect.
- Test duration and stop conditions.
- The decision rule before I peek at results.

Ask one clarifying question only if a hard blocker remains; otherwise proceed with stated assumptions. Use plain language, no fluff, no filler. Quote evidence when citing sources.
CROexperimentab-test
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Narrative storyboard

Tell the experiment as a story, beat by beat.

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Storyboard my experiment as a 7-beat narrative arc.

Subject: [PASTE].
Audience: ecommerce and SaaS teams.
Emotional outcome I want: [PASTE].

Beats: Hook → Stakes → Conflict → Attempt → Setback → Insight → Resolution.

For each beat: 1 sentence of action + 1 sentence of feeling. End with the single image the audience walks away with. Ask one clarifying question only if a hard blocker remains; otherwise proceed with stated assumptions. Use plain language, no fluff, no filler. Quote evidence when citing sources.
CROstorynarrative
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Experiment glossary

Define the 20 terms anyone serious about CRO must know.

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Build a glossary of the 20 most important terms in CRO as it relates to experiments and ecommerce and SaaS teams.

For each term:
- The term.
- A precise 1-sentence definition (no jargon recursion).
- 1 concrete example.
- The most common misuse I should watch out for.

End with the 1 term that is overused and meaningless. Ask one clarifying question only if a hard blocker remains; otherwise proceed with stated assumptions. Use plain language, no fluff, no filler. Quote evidence when citing sources.
CROglossaryreference
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One-page cheat sheet

Compress everything I need into one printable page.

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Produce a one-page cheat sheet for shipping a experiment in CRO.

Audience: ecommerce and SaaS teams.
Bias toward action, not theory.

Sections:
1. The 5-step quick path.
2. 3 hard rules (never break).
3. 3 soft rules (break with a reason).
4. Top mistake at each step.
5. The single check before publishing / shipping / sending.

Plain text, dense, under 400 words. Ask one clarifying question only if a hard blocker remains; otherwise proceed with stated assumptions. Use plain language, no fluff, no filler. Quote evidence when citing sources.
CROcheat-sheetreference
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Anti-patterns to avoid

What NOT to do - with examples.

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List the most damaging anti-patterns in CRO when producing a experiment.

Deliver:
- 8 anti-patterns.
- For each: a named label, a 1-line description, a real-sounding example of the failure, and the corrective principle.
- The anti-pattern that looks like best practice from the outside.

Ask one clarifying question only if a hard blocker remains; otherwise proceed with stated assumptions. Use plain language, no fluff, no filler. Quote evidence when citing sources.
CROanti-patternspitfalls
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Recovery / damage-control plan

Stabilize after a CRO mistake.

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My experiment or CRO effort went wrong. Build me a recovery plan.

What happened: [PASTE].
Who noticed: [PASTE].
Reversibility (1=easy, 5=baked-in): [PASTE].

Deliver:
- The first 24 hours: communications and operational steps.
- The next 7 days: trust-rebuild moves.
- The 30-day move that turns this into a credibility gain.
- The 1 thing I must NOT do in the first 24 hours.

Ask one clarifying question only if a hard blocker remains; otherwise proceed with stated assumptions. Use plain language, no fluff, no filler. Quote evidence when citing sources.
CROrecoverycrisis
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90-day roadmap

Map out a quarter of focused CRO work.

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Build a 90-day roadmap for serious progress on conversion rate in CRO.

Current state: [PASTE].
End state: [PASTE].
Resources: [PASTE].

Deliver:
- Month 1 / Month 2 / Month 3 themes (1 line each).
- 3-5 outcomes per month - each measurable.
- Dependencies and the order they must clear.
- The single bet I should kill if month 1 underdelivers.

Ask one clarifying question only if a hard blocker remains; otherwise proceed with stated assumptions. Use plain language, no fluff, no filler. Quote evidence when citing sources.
CROroadmapstrategy
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Build a swipe file

Curate the best experiments I should be learning from.

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Build me a swipe file of exceptional experiments in CRO to study, not copy.

My focus: conversion rate.
Audience I serve: ecommerce and SaaS teams.

Deliver:
- 10 exemplary experiments (real or plausibly real) with 1-line context for each.
- For each - the one technique to steal and the one tic to avoid.
- 3 patterns that show up across most of them.
- The exemplary experiment that is overrated and why.

Ask one clarifying question only if a hard blocker remains; otherwise proceed with stated assumptions. Use plain language, no fluff, no filler. Quote evidence when citing sources.
CROswipestudy
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