Audit your website across expert cognitive and behavioural science dimensions.
Bluefern works at a pre-conscious level to answer what determines conversion on a website. Our proprietary Cognitive Score is built on a radical premise — every pixel, word and interaction on a website produces a measurable cognitive and emotional response. We built the very first audit dashboard that scores websites the way the brain actually processes them.
In addition to peer-reviewed research across cognitive science and behavioural economics, we also map performance metrics, accessibility standards, compliance and UX research into a single AI-driven audit — giving you an actionable score and prioritised fix list in minutes.
Everything that affects your site's success
Each dimension is scored independently with an A–F grade, a detailed breakdown, and a prioritised list of issues to fix.
Core Web Vitals
LCP, CLS, TBT, TTFB — Google's performance metrics that directly affect rankings.
Accessibility (WCAG)
WCAG 2.1 AA compliance — contrast ratios, ARIA roles, keyboard navigation, alt text.
Nielsen Heuristics
10 usability principles — error prevention, visibility, consistency, and user control.
Gestalt Principles
Visual grouping, proximity, and figure-ground — how users perceive your layout.
Fogg Behavior Model
Motivation, ability, and trigger analysis to identify and reduce conversion friction.
Cialdini Persuasion
Social proof, scarcity, authority, and reciprocity signals that drive conversions.
Content Quality
Readability scores, heading structure, and keyword density for clarity and SEO.
CTA Analysis
Button placement, above-fold presence, action verb usage, and contrast ratios.
Kahneman System 1/2
Instant visual clarity (System 1) vs. analytical decision load (System 2).
Thaler Nudge Theory
EAST framework — Easy, Attractive, Social, Timely nudge signals.
Fitts's Law
Touch target size, spacing, and placement for reliable mobile interactions.
Hick's Law
Navigation complexity, CTA competition, and form fields — reducing decision time.
Cognitive Load
Working memory demand, chunk density, and information architecture complexity.
AEO / GEO
AI Engine & Geographic Optimization — schema markup, structured data, AI share of voice.
Machine Customisation
API discoverability, price markup, NAP consistency, and structured product signals.
Visual Attention
AI saliency heatmap — where eyes land first, CTA prominence, and reading flow alignment.
Visual Design
Color harmony, typography hierarchy, white space, grid alignment, and content density.
Design System
Token adherence, component consistency, atomic structure, and brand drift detection.
Analytics
Tracking coverage, funnel signals, session recording setup, and attribution quality.
Social Proof
Testimonials, ratings, trust badges, UGC widgets, and social platform integration.
Compliance
GDPR cookie consent, privacy policy, dark pattern detection, and regulatory readiness.
More than just scores
Every audit comes with tools that turn findings into action — not just a report to file away.
AI Playbook
After every audit, Gemini generates a prioritised action plan — quick wins, high-impact fixes, and long-term roadmap items — all ranked by effort and conversion impact.
Visual Attention Heatmap
An AI saliency model predicts where real users look first. Compare the heatmap against your screenshot to see whether CTAs and key messages sit in high-attention zones.
Multi-Page Audits
Crawl and score an entire site — not just one URL. Bluefern discovers all pages automatically and produces per-page scores alongside an aggregate site-wide grade.
Industry Benchmarks
See how your scores compare against your vertical — SaaS, e-commerce, fintech, and more. Know exactly where you're ahead and where you're losing to competitors.
How it works
Enter a URL
Paste any public URL — a landing page, product page, or full site. Choose single-page or multi-page audit mode.
AI runs the audit
Bluefern crawls the page, runs 21 analysis engines concurrently, and synthesises findings with Gemini AI.
Get your action plan
Review your overall score, per-dimension grades, a prioritised issue list, and an AI-generated UX playbook.
Ready to improve your site?
Run your first audit in under two minutes. No credit card required.
Start for Free