Methodology
Not a black box.
Every score has a source. Every fix recovers a conversion.
We measure the experience. The result is conversion. Corexi gives you the score, the research it comes from, the evidence behind it, and the code to fix the friction costing you users.
01 / The score
One number. Five dimensions. Tied to conversion.
Your UX Score is a weighted composite of five UX dimensions, derived from 11 evaluation categories. Each dimension maps to conversion impact: behavioral health captures drop-off, visual quality captures first impressions, accessibility captures the users you never reach. The formula is public, not hidden.
Multi-viewport: desktop carries 60%, mobile 40%. Each scan accumulates product context, so scores get sharper over time.
02 / What we measure
11 core categories
Every page scan is evaluated across these categories. Each has measurable criteria rooted in 200+ peer-reviewed sources, and each maps to the friction that quietly costs conversions. Every accessibility finding is cross-checked against axe-core.
Visual Hierarchy
Is the most important element the first to catch attention? Are headings differentiated? Is the visual flow logical?
CTA Visibility
Can you find the primary action in under 2 seconds? Is contrast above WCAG AA 4.5:1? Is sizing appropriate?
Form Design
Are labels present and readable? Are error states designed? Are inputs sized for touch and keyboard?
Spacing & Layout
Is white space consistent? Is a grid system present? Are there cramped or scattered areas?
Typography
Are fonts readable at 16px+ body? Is line length 45-75 characters? Does weight create hierarchy?
Color & Contrast
Does text pass WCAG AA? Is the palette consistent? Is color ever the sole information carrier?
Mobile Responsiveness
Are touch targets 44x44px+? Is there horizontal scroll? Is text readable on a phone?
Cognitive Load
Can a first-time user understand what to do? Is navigation clear? Is there decision paralysis?
Accessibility
Alt text, form labels, keyboard nav, ARIA, focus indicators. Every claim axe-core verified.
03 / Beyond standard UX
+5 neurodiversity dimensions
WCAG covers compliance. It does not cover whether a neurodivergent user can actually complete a conversion. 15–20% of users think differently, and every one of them is a conversion. Corexi evaluates five neurodiversity dimensions within the broader UX Score: ADHD friendliness, dyslexia readability, autism predictability, sensory sensitivity, and color vision deficiency. No other automated tool does this.
ADHD Friendliness
Visual clutter, animation control, content chunking, clear next-step CTAs. Measured within the broader UX Score.
Dyslexia Readability
Line length, letter spacing, justified text, ALL CAPS blocks, contrast below 7:1. Measured within the broader UX Score.
Autism Predictability
Consistent navigation, predictable layouts, clear labeling, minimal unexpected changes. Measured within the broader UX Score.
Sensory Sensitivity
Animation intensity, auto-playing media, contrast extremes, visual overwhelm indicators. Measured within the broader UX Score.
Color Vision Deficiency
Red/green combinations, color as sole info carrier, problematic color pairs. Measured within the broader UX Score.
04 / Real user data
Your analytics + our snippet. One confidence score.
Visual analysis tells you what looks wrong. Behavioral data tells you what actually costs conversions. Connect your existing analytics or drop our one-line Corexi Snippet for instant signals. Rage clicks, form abandonment, drop-off: these are the exact moments users give up. The more sources you connect, the sharper the diagnosis.
| Provider | Window | Signal |
|---|---|---|
| GA4 | 7 days | Sessions, bounce rate, engagement |
| Clarity | 72 hours | Rage clicks, dead clicks, quick-backs |
| Mixpanel | 7 days | Event volume, active days |
| Amplitude | 7 days | Active users, event cadence |
| PostHog | 7 days | Events, active users (deduped) |
| Firebase | Auth | Mobile app analytics |
| Hotjar | Auth | Survey and feedback data |
| Corexi Snippet | 1 hour | Scroll depth, rage clicks, dead clicks, time on page |
~40%
Visual AI only
~65%
+1 provider
85-95%
+2-3 providers
05 / Verification
Verified, not guessed.
Every accessibility finding is cross-checked against axe-core at runtime. Verified findings carry a badge. LLM-only findings stay flagged. You always know which is which.
Verified finding
AI detected an issue AND axe-core confirmed it against WCAG 2.2 rules. 27 rule IDs checked. This is the standard for compliance claims.
AI-only finding
AI detected a potential issue but no deterministic rule confirmed it. Flagged for human review. Transparent about confidence level.
06 / The layers
Three layers. One score.
Every scan flows through three analysis layers. Each layer adds a different kind of evidence. Together, they produce findings that no single layer could generate alone.
Visual layer
Multi-viewport screenshots analyzed by AI vision across all 11 categories. Deterministic checks (contrast ratios, touch targets, spacing) run alongside AI interpretation. This is what you see.
Behavioral layer
Real user signals from your connected analytics and the Corexi Snippet: bounce rates, rage clicks, scroll depth, form abandonment. These are the exact moments users give up on converting.
Reasoning engine
Cross-validates visual findings with behavioral data. A contrast issue that correlates with high bounce rate scores higher than one with no behavioral signal. The engine ties every finding to conversion impact and gets sharper with every scan.
Visual-only scans work from day one. Adding behavioral sources increases confidence from ~40% to 85%+. The engine never requires all layers; it adapts to what you connect.
07 / Data principles
Privacy-first. Always.
Minimal, opt-in tracking
The Corexi Snippet is optional and cookieless. It collects anonymous behavioral signals only: no PII, no session replay, 24h data retention. Your users see nothing.
Read-only analytics
We connect to your existing providers via read-only API. We pull aggregated metrics only.
No PII, ever
Bounce rates, session depth, engagement patterns. Never individual identities, emails, or browsing histories.
EU-based, GDPR compliant
All processing on EU infrastructure. Credentials encrypted at rest (AES-256). Disconnect and delete any time.
See what your UX is costing you.
Book a demo and see how the engine finds the friction costing you conversions.