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CRO Audit

Most landing pages convert at 2-5%. The top 10% convert at 11%+, and the gap is rarely traffic quality — it's the headline, the CTA copy, the social proof placement, and seven other levers nobody pulled. The CRO Audit names the highest-impact fixes with quantified estimates, ordered by likely effect.

What this skill does

A CRO audit isn't a general website review. It has one job: name what's costing you conversions, in order of impact, with a specific fix for each. Most audits fail because they read like UX critiques — "the navigation could be cleaner" — instead of conversion engineering. The page is converting 2.1% because of three specific levers, not because the design isn't pretty enough.

This skill works through eight lenses, each tied to a specific psychological factor and a benchmark lift range. Message match — does the page deliver on the promise that brought the visitor here, or did they click "Free SEO Audit" and land on "Welcome to Our Agency"? Value proposition clarity — can a stranger understand what you offer in five seconds. Visual hierarchy. CTA copy, colour, size, frequency, and micro-copy. Social proof quality and placement. Friction — form fields, ambiguous pricing, navigation that lets the visitor wander off. Mobile experience at 375px. And page performance — LCP under 2.5s, CLS under 0.1, INP under 200ms — because a slow page bleeds conversion no copy fix can recover.

Every recommendation lands with the same shape: the issue, which lens, severity, estimated lift, the current state, the exact replacement, the behavioural principle, and a test suggestion. "Improve the headline" isn't a recommendation. "Replace H1 'Enterprise-Grade Platform' with 'Cut Invoicing From 3 Hours to 15 Minutes' — outcome-specific, matches the ad-copy promise" is.

Output is separated into Quick Wins (under 30 minutes, no design work), Medium-Term (this week), and Strategic Tests (A/B before full rollout). The skill is also honest about the maths. Stacking five 20% lifts doesn't yield 100% — it doesn't even yield 60%. Lifts compound multiplicatively and conversion has a ceiling. A page converting at 2% can plausibly reach 5-7% with a strong audit applied; promising 15% would be selling a number that doesn't exist.

When this triggers

  • ·You're paying for traffic that lands and bounces
  • ·Your page converts but you suspect it's leaving 30-50% on the table
  • ·You've redesigned and conversion didn't move — you need to know why
  • ·You want a prioritised fix list with impact estimates, not 'maybe try a video'
  • ·You're handing this to a client and need a defensible report with A/B test suggestions

Example

Trigger

User pastes a SaaS pricing page. Converts 2.1% from paid search. Says: 'Why isn't this converting?'

Output

Current performance: below average for SaaS pricing pages (benchmark 3-5%). Top 3 highest-impact changes: 1. Message-match failure — ad copy promises "free 14-day trial," hero leads with "Enterprise-Grade Platform." Expected lift: 20-40%. 2. CTA copy — "Submit" on a $99/mo signup. Outcome-oriented beats action by 30%. Replace with "Start My Free Trial." Expected lift: 10-25%. 3. No social proof above the fold. Logo bar of 6 known clients near the pricing table. Expected lift: 10-20%. [+ 14 more prioritised findings across all 8 lenses, with quick wins, medium-term, and strategic tests separated] Honesty note: stacking these doesn't multiply. Expect 35-55% total lift from Priority 1, not 70%.

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What you get

  • 170-line SKILL.md, ready to drop into ~/.claude/skills/
  • Tested through 3 Karpathy-loop iterations (versions v1.0.0 → v1.3.0)
  • Triggers automatically when relevant — no command to remember
  • Lifetime updates as the skill is refined further

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