CRO – Conversion Rate Optimization
A systematic process to improve conversion rates: data analysis, A/B tests, UX improvements, and marketing psychology. Improving CR is equivalent to doubling your ad budget.
In practice
A 0.5% CR improvement on 10,000 monthly visits equals 50 additional sales without spending another dollar. It's the highest-leverage work available.
Common misconception
'CRO means changing button colors.' CRO is a scientific process. 40% of A/B tests reveal that the assumed 'improvement' actually lowers conversions. Changes without evidence are directionless work.
How to fix it
CRO not paying off? (1) Sample size — an A/B test with 100 visits isn't significant, you need 1,000+ per variant, (2) test one thing at a time, (3) require statistical significance above 95%.
Example
A sofa store: CR was 0.8%. A heatmap showed customers weren't scrolling to reviews. An A/B test moving reviews above the fold raised CR to 1.3% — a 62% lift with zero added ad spend.
Priority
Start CRO after 500+ daily visits — before that, there isn't enough data. Cycle: Hotjar → identify issues → A/B test → implement.
Related terms
Keep learning. Metrics that touch the same area:
- A/B TestingUXComparing two versions with equal-sized groups. Version A is the existing one, version B is the change. Every major store change is worth testing before full rollout.
- Funnel AnalysisAnalyticsAnalysis showing how many visitors move through the stages of the purchase process — and where they drop off. In GA4: Explore → Funnel Exploration. Displays the drop-off rate at each stage.
- Customer JourneyUXMapping every touchpoint with a brand — from the first ad seen to post-purchase support. Stages: awareness, consideration, purchase, usage, loyalty.
- Social ProofUXA psychological phenomenon: people choose based on what others do. In a store: reviews, ratings, purchase counts, UGC, media logos. Boosts conversions by 15-270%.
- Trust SignalsUXElements that establish credibility: SSL (lock icon), payment badges, phone number, return policy, physical address, reviews, media mentions.
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