CRO Website Audit: Turn More Visitors Into Customers

What Is a CRO Audit

A CRO (Conversion Rate Optimisation) audit systematically evaluates your website's ability to convert visitors into desired outcomes — purchases, sign-ups, enquiries, or downloads. While most audits focus on getting traffic to your site, a CRO audit focuses on what happens after they arrive.

The maths is simple: doubling your conversion rate has the same revenue impact as doubling your traffic — but it's typically faster and cheaper to achieve. A 1% increase in conversion rate on a site doing £100K/month in revenue is an extra £1,000/month without spending a penny more on marketing.

CRO vs UX Audit

CRO and UX audits overlap but have different priorities:

CRO audit: Revenue-focused. Analyses conversion funnels, landing pages, CTAs, and checkout flows specifically to increase conversion rates. Decisions are driven by data (analytics, heatmaps, A/B tests).
UX audit: Experience-focused. Evaluates the overall quality of user interaction including navigation, accessibility, design consistency, and emotional response.

A CRO audit always starts with data. Before suggesting changes, you need to know where users drop off, which pages have the worst conversion rates, and what traffic sources convert best.

Analytics Deep Dive

Before looking at the website itself, analyse your data:

Conversion rate by page: Which pages have the highest and lowest conversion rates? Pages with high traffic but low conversions are your biggest opportunities.
Funnel drop-off points: Set up funnel visualisation in GA4 to see where users abandon the conversion process. A 70% drop-off between "Add to Cart" and "Checkout" tells you exactly where to focus.
Device segmentation: Compare mobile vs desktop conversion rates. If mobile converts at 1% and desktop at 4%, your mobile experience has serious problems.
Traffic source quality: Some traffic sources convert better than others. Organic search typically converts 2-3x better than social. If a traffic source has high volume but zero conversions, stop investing in it.
Bounce rate by landing page: Pages with bounce rates above 80% are failing to engage visitors. Either the traffic is wrong (targeting issue) or the page is wrong (content/design issue).
Exit pages: Where do converting users leave? Where do non-converting users leave? The difference reveals which pages are helping vs hurting conversion.

Landing Page Analysis

Above-the-fold content: Does the visitor immediately understand what you offer and why they should care? The headline, subheadline, and hero section must communicate your value proposition in under 5 seconds.
Headline clarity: Your headline should pass the "grunt test" — if a caveman saw it, would they understand what you offer, how it helps, and what to do next?
CTA visibility: Your primary call-to-action should be visually prominent, above the fold, and use action-oriented language ("Get Your Free Audit" not "Submit").
Visual hierarchy: Do users' eyes flow naturally from headline to key benefits to CTA? Use heatmaps to verify attention patterns match your intended hierarchy.
Page length: Long pages aren't inherently bad — but every section must earn its place. If scroll depth data shows users stop reading at 40% of the page, your bottom content needs to be moved up or removed.
Social proof placement: Testimonials, logos, review scores, and case studies should appear near the CTA, where users are making their decision.

Conversion Funnel Review

Number of steps: Every step in your conversion funnel loses users. Count the clicks from landing page to conversion. Can any steps be eliminated or combined?
Form length: Each additional form field reduces conversions by approximately 4%. Ask yourself: do you really need the phone number? The company name? The job title?
Guest checkout: For e-commerce, forcing account creation before purchase can reduce conversions by 35%. Always offer guest checkout.
Progress indicators: Multi-step processes should show progress. Users are more likely to complete a "Step 2 of 3" form than an open-ended one.
Cart abandonment: If your cart abandonment rate is above 70%, audit the checkout flow for surprises (unexpected shipping costs are the #1 abandonment cause), complexity, trust concerns, and technical issues.
Payment options: Offer multiple payment methods. In 2026, not accepting Apple Pay, Google Pay, or buy-now-pay-later options is leaving money on the table.

Trust and Credibility Signals

Social proof: Testimonials with names and photos convert better than anonymous quotes. Case studies with specific numbers are most persuasive.
Trust badges: Security badges, payment provider logos, and industry certifications reduce purchase anxiety. Place them near the CTA and checkout.
Guarantees: Money-back guarantees, free trial periods, and "no credit card required" messaging lower the perceived risk of converting.
Contact information: Visible phone numbers, physical addresses, and live chat options signal legitimacy. Sites without contact details feel untrustworthy.
Professional design: Users judge credibility based on design quality within 50 milliseconds. An outdated or amateurish design undermines everything else on the page.

A/B Testing Strategy

A CRO audit identifies problems; A/B testing validates solutions:

Prioritise tests by impact: Use the PIE framework — Potential (how much room for improvement), Importance (how valuable is the page), and Ease (how easy is the test to implement).
Test one variable at a time: Changing the headline, CTA, and layout simultaneously means you won't know which change drove the result.
Run tests to statistical significance: Don't call a winner after 2 days. Most tests need 2-4 weeks and at least 1,000 conversions per variation to be reliable.
Document everything: Record every test hypothesis, what you changed, the result, and what you learned. Build a testing knowledge base over time.

CRO Audit Checklist

Conversion rate tracked for all key actions
Funnel visualisation set up in analytics
Mobile vs desktop conversion rates compared
Top exit pages identified
Value proposition clear above the fold
Primary CTA visible and action-oriented
Form fields minimised
Social proof near CTAs
Trust badges at checkout
Guest checkout available
No surprise costs in checkout flow
A/B testing plan for top 3 opportunities