Conversion Rate Optimization (CRO) combines cognitive psychology with data-driven UI engineering to remove friction from user journeys.
1. High-Conversion UX Heuristics
- Visual Contrast & Action Triggers: Primary Call to Action (CTA) buttons must maintain ≥ 4.5:1 contrast and follow Fitts's Law for finger-touch target size (≥ 44px).
- Form Velocity & Inline Validation: Replacing multi-column forms with clean single-column inputs and real-time field validation increases completion rates by 27%.
- Friction Reduction: Eliminating unnecessary form fields and replacing password requirements with magic link authentication.