Growth cro
Skill christopherlouet/claude-base/.claude/skills/growth-cro
Opinionated Claude Code foundation — Explore → TDD → Audit workflow, auto-detected stack presets (nextjs, fastapi, astro, ...), curl | bash install. MIT.
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Conversion rate optimization (CRO) and funnel analysis. Trigger when the user wants to optimize conversions, map/analyze a conversion funnel, improve a signup form, a checkout, a landing page, or an onboarding/activation flow.
SKILL.md
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Conversion Rate Optimization (CRO)
Goal
Identify and fix friction points in user journeys to maximize the conversion rate.
CRO Domains
┌──────────────────────────────────────────────────────────────────┐
│ CRO FRAMEWORK │
├──────────────────────────────────────────────────────────────────┤
│ │
│ PAGE CRO Optimize marketing/landing pages │
│ ═════════ │
│ │
│ SIGNUP FLOW CRO Improve signup and account creation │
│ ══════════════ │
│ │
│ ONBOARDING CRO Reduce time-to-value post-signup │
│ ═════════════ │
│ │
│ FORM CRO Optimize capture forms │
│ ════════ │
│ │
│ POPUP CRO Improve popups, modals, overlays │
│ ═════════ │
│ │
│ PAYWALL CRO Optimize paywalls and upsells │
│ ═══════════ │
│ │
└──────────────────────────────────────────────────────────────────┘
1. Page CRO
Landing page checklist
| # | Element | Best practices |
|---|---|---|
| 1 | Headline | Clear benefit in < 10 words, no jargon |
| 2 | Sub-headline | Explain the "how" in 1 sentence |
| 3 | Primary CTA | Specific action, visible above-the-fold |
| 4 | Social proof | Testimonials, customer logos, numbers |
| 5 | Objections | FAQ or sections answering doubts |
| 6 | Urgency/Scarcity | Timer, limited spots (if authentic) |
| 7 | Hero visual | Product screenshot or demo video |
| 8 | Navigation | Minimal (no full menu on landing) |
Conversion patterns
Hero section (benefit + CTA)
↓
Social proof (logos, testimonials)
↓
Features/Benefits (3-5 max)
↓
How it works (3 steps)
↓
Pricing (if applicable)
↓
FAQ (common objections)
↓
Final CTA (same action as the hero)
2. Signup Flow CRO
Golden rules
| # | Rule | Impact |
|---|---|---|
| 1 | Minimum fields (email only to start) | +20-30% signups |
| 2 | Social login (Google, GitHub) | +15-25% signups |
| 3 | No blocking email confirmation | -40% drop-off |
| 4 | Progress indicator if multi-step | +10% completion |
| 5 | Value proposition visible next to the form | +15% signups |
| 6 | Password strength indicator | +5% completion |
| 7 | Inline error, not at submit | +20% completion |
Anti-patterns to avoid
- Asking for too much info at signup (name, phone, address)
- CAPTCHA visible for all users
- Confirmation email before product access
- Redirect to login page after signup
- No feedback after form submission
3. Onboarding CRO
Time-to-Value framework
Signup → [Activation] → [Aha Moment] → [Habit Formation]
| | |
v v v
First setup First value Regular usage
(< 2 min) (< 5 min) (Day 7+)
Effective patterns
| Pattern | When | Example |
|---|---|---|
| Checklist | 3-5 activation steps | "Complete your profile: 3/5" |
| Wizard | Technical setup required | "Connect your GitHub repo" |
| Empty state | First visit, empty page | "Create your first project" |
| Template | Complex product | "Start from a template" |
| Tour guide | Complex interface | Discovery tooltips |
4. Form CRO
Form optimization
| # | Technique | Detail |
|---|---|---|
| 1 | One field per line | No multi-column layout on mobile |
| 2 | Labels above fields | No floating labels |
| 3 | Correct input type | email, tel, number for adapted keyboard |
| 4 | HTML autocomplete | autocomplete="email", "given-name" |
| 5 | Font size >= 16px | Avoids iOS zoom |
| 6 | Descriptive submit button | "Create account" not "Submit" |
| 7 | Immediate feedback | Validate on blur, not at submit |
| 8 | Easy error recovery | Message + focus on the field in error |
5. Popup/Modal CRO
Rules
| # | Rule | Detail |
|---|---|---|
| 1 | Timing: not before 30s or 50% scroll | Let users discover the content |
| 2 | Exit-intent > time-based | Less intrusive |
| 3 | Easy to close | Visible X, click outside, Escape |
| 4 | One popup at a time | No stack of modals |
| 5 | Limited frequency | Max 1x per session or 1x per week |
| 6 | Clear value proposition | Not just "Subscribe" |
| 7 | Mobile: bottom sheet > centered modal | Better mobile UX |
6. Paywall/Upgrade CRO
Strategies
| Strategy | Detail | When |
|---|---|---|
| Feature gate | Show the feature, block access | Premium feature requested |
| Usage limit | "3/5 projects used" | Free tier limit approached |
| Trial expiration | Countdown + demonstrated value | End of trial |
| Upgrade prompt | Contextual suggestion | Premium action attempted |
| Social proof | "Join 10,000+ teams" | Pricing page |
Pricing page patterns
[ Free ] [ Pro ★ ] [ Enterprise ]
$0 $29/mo Custom
3 projects Unlimited Unlimited
1 user 10 users Unlimited
Basic support Priority Dedicated
[Start trial]
- Highlight the recommended plan (badge, color)
- Monthly/annual toggle (show the savings)
- Feature comparison table below
- FAQ on billing
7. Funnel mapping & analysis
Before optimizing a single step, map and measure the whole funnel.
- Map the steps — events, pages, actions from entry to conversion.
- Measure — conversion per step and the global rate.
| Step | Users | Conv. | Drop-off | Trend |
|---|---|---|---|---|
| ... | ... | ... | ... | ... |
- Segment — device, source, country, cohort (drop-offs often hide in a segment).
- Diagnose drop-offs — friction (effort), anxiety (trust), clarity (confusion) — ask why, not just how much.
- Prioritize — score opportunities with ICE (Impact × Confidence × Ease); optimize one step at a time.
- Monitor — continuous tracking + alerts on step regressions.
Reliable tracking is a prerequisite — never analyze a funnel on unreliable data.
Metrics to track
| Metric | Formula | Target |
|---|---|---|
| Conversion rate | Conversions / Visitors | Depends on the domain |
| Drop-off rate | Drop-offs per funnel step | < 20% per step |
| Time to convert | Visit duration → conversion | Reduce |
| Bounce rate | Bounces / Sessions | < 40% landing pages |
| Activation rate | Activated users / Signups | > 40% |
| Trial-to-paid | Payments / Trials | > 15% |
Expected output
## CRO Audit: [Page/Flow]
### Current estimated conversion rate: X%
### Improvement potential: +Y%
### Quick wins (immediate impact)
1. [Action] - Estimated impact: +X%
2. [Action] - Estimated impact: +X%
### Structural improvements
1. [Action] - Detail and implementation
### Recommended A/B tests
1. [Hypothesis] - Variant A vs B
Rules
- Always base recommendations on data or proven best practices
- Propose quick wins AND structural changes
- Do not sacrifice UX for conversion (dark patterns forbidden)
- Suggest A/B tests to validate important changes