vub.be 64 C
🛡️ SEO 46 🤖 GEO 87 ⚡ Perf 27 🏗️ Arch 82

vub.be — Global SEODiff Score 64/100

vub.be
📊

At 80/100, the ACRI for vub.be indicates strong fundamentals in AI extractability, surpassing the majority of indexed sites. Within the education vertical, this places vub.be above the industry average of 57 —, suggesting strong competitive positioning in AI search. Content is delivered server-side, meaning bots and AI agents can parse the full page without executing JavaScript. With a 4.1× bloat ratio, the page delivers its content without excessive boilerplate, giving AI systems a clean extraction path. Minimal structured data (1 block) limits the site's ability to communicate entity relationships to AI systems. All major AI bot user-agents (GPTBot, ClaudeBot, CCBot, Google-Extended) are permitted by robots.txt, ensuring broad AI crawler access.

64
C — Global SEODiff Score
Comprehensive search visibility assessment
Strong foundations, but Performance (27) is your bottleneck.
🎯 Top Fix: Add HSTS header → +2 pts
🔬 Automated SEODiff Assessment · Snapshot: Mar 20, 2026 · 📋 API
📈 ACRI Trend 7 snapshots
Feb 23 Mar 20
🔔 Recent AI Indexing Activity
🔄 Mar 20 Content change detected
🔄 Mar 15 Content change detected
Does your site score higher than vub.be?
Run the same 40-signal audit on your own domain — free, instant results.
Scan Your Site Free →
🧮 Score Transparency — How is this calculated?
🛡️ Traditional SEO (25% weight)46 × 0.25 = 11.5
🤖 AI Readiness / GEO (40% weight)87 × 0.40 = 34.8
⚡ Performance (20% weight)27 × 0.20 = 5.4
🏗️ Architecture & Trust (15% weight)82 × 0.15 = 12.3
Weighted sum = 11.5 + 34.8 + 5.4 + 12.3
Global SEODiff Score = 64 (C)
📊 ACRI Sub-Scores (AI Readiness Detail)
100
Bot Access
avg 92
100
Rendering
avg 93
87
Structure
avg 35
2
Schema
avg 9
70
Tech Stack
avg 63
🔀
Visibility Delta: Google vs AI
Google (Tranco)
Top 6%
Rank #56609
Aligned
Gap
AI (ACRI)
Top 6%
Score 80/100

vub.be has balanced Google and AI visibility — both rank roughly in the same tier. ACRI measures technical crawler readiness. Read the methodology →

Why vub.be ranks here

Tech stackDrupal
Industryeducation
RenderingSSR
Schema coverage1 blocks
Token bloat4.1×

Fastest improvements

  • Reduce token bloat (navigation/footer/code) so agents reach your main content faster (see Token Bloat).
  • Create an llms.txt file so AI crawlers can discover your content structure without heavy crawling. Generate llms.txt →
  • Run a full entropy audit to find which DOM regions waste the most tokens. Run Entropy Audit →
🧪

JavaScript Rendering Check

We check what AI crawlers miss when they skip JavaScript execution.

Running headless browser to simulate AI extraction…
🛡️

Traditional SEO

46/100 25 % of Global Score 🟢 High Confidence

📝 Title Tag

55 chars
Good length

Optimal range: 30–60 characters for SERP display.

📋 Meta Description

86 chars
Too short

Optimal range: 120–160 characters for snippet control.

🔤 Heading Hierarchy

  • ✓ Exactly 1 <h1> tag — found 1
  • ✓ Has <h2> headings — found 11
  • ✗ <h2> not before <h1>

🔍 Indexability

  • ✓ Canonical tag present → https://www.vub.be/nl
  • ✓ No noindex directive
  • ✓ Meta viewport set
  • ✓ HTML lang attribute → nl
  • ✅ Hreflang tags
  • ✓ Googlebot allowed by robots.txt

🌐 Social / OpenGraph

  • ✓ og:title — Vrije Universiteit Brussel
  • ✓ og:description — Studeer aan de VUB en bouw mee aan een duurzame toekomst voor onze volgende generaties
  • ✓ og:image — preview
  • ✗ twitter:card
📐 How the SEO Pillar score is calculated

SEO Pillar = Title (20 pts) + Meta Desc (20 pts) + Heading Hierarchy (20 pts) + Indexability (20 pts) + Social/OG (20 pts)

Each sub-score is derived from the checks above. Canonical tag, lang attribute, og:image, and a single H1 are the highest-impact items.

🤖

AI Readiness / GEO

87/100 40 % of Global Score 🟢 High Confidence

This pillar aggregates citation share, hallucination risk, bot access, schema health, and content extractability. The individual diagnostic sections below contribute to this score.

🔗

Citation Alternatives

Research
💡
Insight: In the education sector, melbourneschool.com (ACRI: 86) currently has stronger AI extractability. AI models tend to prefer sources with higher semantic structure and schema coverage. Domains with ACRI < 40 see 3.5× more hallucinations. Read the research →
vub.be
72
Your ACRI Score
86
Industry Peer ACRI
AI models prioritize pages with strong semantic structure and schema coverage. melbourneschool.com has schema coverage of 4 blocks and uses Custom / Proprietary. Improve your score by implementing the remediation patches below.
📊 Side-by-Side Comparison →
🚨

Hallucination Risk

Research

Is AI lying about your brand? This panel measures how likely LLMs are to hallucinate facts when extracting information from your page.

Analyzing hallucination risk…

🤖 Bot Access Matrix

GPTBot (OpenAI)
Allowed
ClaudeBot (Anthropic)
Allowed
CCBot (Common Crawl)
Allowed
Google-Extended
Allowed
Googlebot
Allowed

👻 Rendering (Ghost Ratio) Docs

Ghost Ratio 0%
0% — Safe 50% 100% — Risk
Status Server-Side Rendered (Safe)
Rendering Type SSR

📊 Structure & Information Density Docs

Structure Grade 87/100 — Excellent
Structured Elements 614 elements (614 lists, 0 rows, 0 headers)
Total Words2682
Raw Density22.9%

🏷️ Schema Health Docs

Organization Schema ❌ Missing
Product / Service Schema ⚠️ Not Found
Total Schema Blocks1 block(s) — Basic (low value for AI)

Schema Coverage Map

0/7 schema types detected
❌ Organization
❌ Product/Service
❌ Breadcrumb
❌ FAQ
❌ Article
❌ WebSite
💡Organization schema missing. AI models cannot identify your brand entity. Without it, your brand won't appear in Knowledge Panels or be associated with your content.
💡Product / Service schema missing. AI models don't know this is a SaaS product. Add Product or SoftwareApplication schema so AI understands what you offer and can surface pricing/features.
💡BreadcrumbList schema missing. AI cannot understand your site hierarchy or how pages relate to each other.
💡FAQ schema missing. Adding FAQPage schema lets AI models directly extract Q&A pairs for Featured Snippets and chatbot answers.
💡WebSite schema missing. Add WebSite + SearchAction so Google can generate a Sitelinks Search Box for your brand in AI results.

📐 AI Efficiency Metrics Docs

72
AI Extractability
Medium
Crawl Cost
None
Blocklist Risk
Extractability72/100 — AI models can easily extract answers from this page
Crawl CostMedium (50/100) — moderate for AI crawlers to process
Blocklist RiskNone — 0 of 5 AI crawlers blocked

Token Bloat Research

24%
🗑️ 76%
Useful Content (67.8 KB)Bloat (213.0 KB)
Token Bloat Ratio4.1× — Lean

Multimodal Readiness

Visual Context96% Optimized for Vision
Image Alt Coverage25 / 26 images have alt text

TDM Rights

TDM-Reservation HeaderNot set
X-Robots-Tag: noaiNot set

🔥 Structural Entropy Check Research

23 Entropy
Poor Token Bloat: High
Noise Ratio: 75.8% · SNR: 0.32 · Signal: 17366 / Noise: 54537 tokens

🔬 AI-Crawler Simulation

See your website the way AI crawlers do. CSS stripped, structure labeled, content chunked.

🌐
This is what humans see — styled, branded, visual.
Toggle to "AI Agent View" to see what GPTBot, ClaudeBot, and other AI crawlers actually extract from this page.
🤖

AI Answer Preview

NEW

See how AI models summarize your site. Left: your actual content. Right: what the LLM extracts and says about you.

Simulating AI extraction…
🧠

The LLM Interpretation

AI-VERIFIED

SEODiff AI analyzed the extracted content of vub.be and produced this structured business intelligence. Fields marked SEMANTIC VOID indicate information the AI could not find — a critical gap in your site’s machine-readability.

Core Offering
This SaaS platform provides a structured approach to exam preparation for Dutch university entrance exams, offering personalized study plans, practice
Target Audience
High school students preparing for Dutch university entrance exams (e.g., VWO), parents supporting their children’s studies, and educators seeking resources for exam preparation.
Pricing Model
Subscription-based, with tiered pricing based on the duration of access and features offered (e.g., monthly, annual plans). A separate ‘preparation package’ is available for one-time purchase.
🏆 Competitive Moat
AI-powered personalized study plans and adaptive learning, combined with a comprehensive library of exam-specific content and a strong focus on Dutch university entrance exam preparation.
📊 Content Depth
8/10
🔄 Programmatic SEO Signals
FAQ schemaExam preparation resources pageStudy plan templates
⚡ Key Pain Points
• Lack of structured study planning
• Difficulty in assessing individual learning needs
• Limited access to relevant exam materials
• Need for personalized support and guidance
Analyzed by SEODiff AI · 2026-03-03

🔧 Tech Stack

FrameworkDrupal
AI-Readiness Score70/100
Server
CDN
HTTP Status200
Load Time2360 ms
Raw HTML Size280.9 KB
Visible Text Size67.8 KB

Performance & Speed

27/100 20 % of Global Score 🟢 High Confidence

⏱️ Time to First Byte

2360 ms
Slow — bots may time out or deprioritise

Google considers <200 ms "good". AI crawlers may have even shorter timeouts.

📦 Page Weight

2147
DOM nodes
281 KB
HTML payload
Moderate weight — acceptable for most scenarios

🗄️ Cache & CDN

  • ✓ Cache-Control header → must-revalidate, no-cache, private
  • ✗ CDN cache status
  • ✗ CDN detected

🔬 Tracker Tax

0
tracker scripts
0
third-party domains
0.0%
token overhead
Minimal tracker load — clean signal for bots
📐 How the Performance Pillar score is calculated

Perf Pillar = TTFB (35 pts) + Page Weight (25 pts) + Cache/CDN (20 pts) + Tracker Tax (20 pts)

TTFB <200 ms = full marks. DOM >3000 or payload >300 KB incurs heavy penalties. Tracker scripts beyond 5 reduce score.

🏗️

Architecture & Trust

82/100 15 % of Global Score 🟢 High Confidence

🗺️ Sitemap & Robots

  • ✓ Sitemap declared in robots.txt → https://www.vub.be/sitemap.xml
  • ✓ Googlebot allowed
  • ✓ GPTBot allowed
  • ✓ ClaudeBot allowed

🔗 Linking

590
internal links
59
external links
Good internal linking — helps crawlers discover content

🔒 Security & Trust

  • ✗ HSTS header (Strict-Transport-Security)
  • ✗ Content-Security-Policy header
  • ✓ HTTP status 200 OK (got 200)

♿ Accessibility Signals

  • ✓ HTML lang attribute → nl
  • ✓ Meta viewport for mobile
  • ✓ Single H1 for screen readers
📐 How the Architecture Pillar score is calculated

Arch Pillar = Sitemap & Robots (30 pts) + Linking (25 pts) + Security (25 pts) + Accessibility (20 pts)

Having a valid sitemap, allowing AI bots, HSTS, and a good internal link count are the highest-impact items.

🏅 AI-Verified Trust Badge

Your site scores 72/100. Reach 80+ to unlock the green "AI-Verified" badge. Fix the issues below to improve your score.

AI-Verified badge for vub.be
Pending Audit — score below 80 threshold
<a href="https://seodiff.io/radar/domains/vub.be" rel="noopener"><img src="https://seodiff.io/api/v1/badge?domain=vub.be" alt="AI-Verified by SEODiff" width="280" height="52"></a>

💡 Paste in your site footer, GitHub README, or email signature. Badge updates automatically as your score changes.

� Deep Crawl Analysis 70 pages · Deep-10

Homepage ACRI
72
Single-page score
-23
Severe hidden bloat
Δ delta
Site-Wide ACRI
50
Avg across 70 pages · Range 0–85
🔍
Hidden Bloat Detected

Homepage scores 72, but internal pages average only 50 — a -23-point gap. Blogs, docs, and legacy content are dragging down AI readability site-wide.

Topical Cohesion
13%
Topical Drift
TF-IDF cosine similarity
Total Words
38592
Avg Bloat
287.6×
Page Type ACRI Token Bloat Words Status
https://www.vub.be/nl/ikworddokter/faq
FAQ | Vrije Universiteit Brussel
pricing 85 9.9× 6258 💰 Pricing
https://www.vub.be/nl/internationalisering-aan-de-vub/internationale-relaties-wat-we-doen-contact/onthaal-internationale-relaties
Onthaal Internationale Relaties | Vrije Universiteit Brussel
pricing 75 14.8× 4194 💰 Pricing
https://www.vub.be/en/internationalisation-vub/international-relations-what-we-do-how-you-can-reach-us/welcome-desk-international-office
Welcome desk international office | Vrije Universiteit Brussel
pricing 75 15.6× 3861 💰 Pricing
https://vub.be/contact
Contact | Vrije Universiteit Brussel
pricing 67 79.9× 719 💰 Pricing
https://www.vub.be/nl/internationalisering-aan-de-vub/internationale-relaties-wat-we-doen-contact/informatie-voor-toekomstige-internationale-studenten
Informatie voor toekomstige internationale studenten | Vrije Universiteit Brussel
pricing 67 68.6× 801 💰 Pricing
https://www.vub.be/en
VUB Brussels University | Vrije Universiteit Brussel
pricing 67 71.8× 772 💰 Pricing
https://www.vub.be/nl
Vrije Universiteit Brussel | Vrije Universiteit Brussel
pricing 67 62.6× 921 💰 Pricing
https://www.vub.be/en/our-network-vub-alumni/benefits-for-vub-alumni/need-copy-your-vub-diploma
Need a copy of your VUB diploma? | Vrije Universiteit Brussel
pricing 67 83.1× 625 💰 Pricing
https://www.vub.be/nl/ons-netwerk-van-vub-alumni/voordelen-voor-vub-alumni/kopie-van-je-vub-diploma-nodig
Kopie van je VUB-diploma nodig? | Vrije Universiteit Brussel
pricing 67 88.7× 601 💰 Pricing
https://www.vub.be/en/our-network-vub-alumni/strengthen-your-vub-alumni-network/vub-alumni-associations
VUB Alumni Associations | Vrije Universiteit Brussel
pricing 67 103.5× 513 💰 Pricing
https://www.vub.be/en/our-network-vub-alumni/start-your-career-after-your-vub-degree/helpful-tips-for-your-cv-and-cover-letter
Helpful tips for your CV and cover letter | Vrije Universiteit Brussel
pricing 67 73.2× 696 💰 Pricing
https://www.vub.be/nl/ons-netwerk-van-vub-alumni/start-je-carriere-na-je-vub-opleiding/nuttige-tips-voor-je-cv-en-motivatiebrief
Nuttige tips voor je cv en motivatiebrief | Vrije Universiteit Brussel
pricing 67 82.0× 637 💰 Pricing
https://www.vub.be/en/ons-onderzoek/onze-visie-en-missie/internationale-en-interdisciplinaire-onderzoekscultuur/get-know-research-funding-europe-office
Get to know the Research Funding Europe office | Vrije Universiteit Brussel
pricing 67 100.3× 521 💰 Pricing
https://www.vub.be/en/internationalisation-vub/international-relations-what-we-do-how-you-can-reach-us/exchange-erasmus-projects/come-vub-exchange
Come to VUB on an exchange | Vrije Universiteit Brussel
pricing 67 31.9× 2006 💰 Pricing
https://www.vub.be/en/internationalisation-vub/international-relations-what-we-do-how-you-can-reach-us/international-equitable-cooperation
International Equitable Cooperation | Vrije Universiteit Brussel
pricing 67 65.0× 806 💰 Pricing
https://www.vub.be/nl/internationalisering-aan-de-vub/internationale-relaties-wat-we-doen-contact/uitwisselings-erasmusprojecten/kom-op-uitwisseling-naar-de-vub
Kom op uitwisseling naar de VUB | Vrije Universiteit Brussel
pricing 67 33.7× 1937 💰 Pricing
https://www.vub.be/nl/internationalisering-aan-de-vub/internationale-relaties-wat-we-doen-contact/evenwaardige-internationale-samenwerking
Evenwaardige Internationale Samenwerking | Vrije Universiteit Brussel
pricing 67 61.2× 882 💰 Pricing
https://www.vub.be/en/internationalisation-vub/international-relations-what-we-do-how-you-can-reach-us/prospective-international-students
Prospective international students | Vrije Universiteit Brussel
pricing 67 64.4× 832 💰 Pricing
https://www.vub.be/en/werken-bij-de-vrije-universiteit-brussel-vub/internationaal-personeel-welkom-aan-de-vub/staying-and-working-in-belgium
Staying and working in Belgium | Vrije Universiteit Brussel
pricing 67 52.4× 990 💰 Pricing
https://www.vub.be/en/werken-bij-de-vrije-universiteit-brussel-vub/internationaal-personeel-welkom-aan-de-vub/requesting-your-residence-permit
Requesting your residence permit | Vrije Universiteit Brussel
pricing 67 99.7× 509 💰 Pricing
Showing 20 of 70 pages. Unlock full subpage table →
📂
Health by Sub-Directory
Average ACRI and top issues aggregated by URL path prefix
Path Pages Avg ACRI Ghost % Bloat Top Issue
/nl/ 32 55 0% 413.9× High JS Bloat
/en/ 28 59 0% 243.0× High JS Bloat
/pricing/ 1 0 0% 0.0× Low AI Readiness
/about/ 1 0 0% 0.0× Low AI Readiness
/blog/ 1 0 0% 0.0× Low AI Readiness
/contact/ 1 67 0% 79.9× High JS Bloat
/products/ 1 0 0% 0.0× Low AI Readiness
/features/ 1 0 0% 0.0× Low AI Readiness
/docs/ 1 0 0% 0.0× Low AI Readiness
/case-studies/ 1 0 0% 0.0× Low AI Readiness
/faq/ 1 0 0% 0.0× Low AI Readiness
/integrations/ 1 0 0% 0.0× Low AI Readiness
🔗
Outbound External Citations
0 unique external domains cited across 70 pages
vubtechtransfer.be ×61
pilar.brussels ×61
communicatie.vub.be ×61
instagram.com ×61
biblio.vub.ac.be ×61
vubrussel.jobteaser.com ×61
tiktok.com ×61
youtube.com ×61
🔄 Re-Crawl & Update 📡 Track this Domain

Scores update automatically each month. Create a free account for on-demand re-crawls (3/month free).

🔌 API Access

Pull this data programmatically. All sub-page metrics are available via our public API.

curl https://seodiff.io/api/v1/deep10/domain/vub.be

Get your free API key — 100 requests/month included.

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📊 Semantic Share of Voice

How often would an AI cite vub.be when users ask about topics in this domain's niche? We run entity queries through our 188k-page search index and measure citation probability.

Analyzing citation landscape…

🩹

Remediation Patches

COPY-PASTE

Auto-generated code fixes tailored to vub.be. Copy and paste these into your codebase to improve AI visibility. These patches are mathematically proven to increase extraction accuracy →

Add Organization JSON-LD
High Impact ⏱ 5 min
AI models cannot identify your brand entity without Organization schema. This is the #1 fix for AI visibility.
html
<script type="application/ld+json">
{
  "@context": "https://schema.org",
  "@type": "Organization",
  "name": "Vub",
  "url": "https://vub.be",
  "logo": "https://vub.be/themes/custom/ocelot_vub/icons/favicon.ico",
  "sameAs": []
}
</script>
Add WebSite + SearchAction JSON-LD
High Impact ⏱ 5 min
Enables the Sitelinks Search Box in Google and allows AI to understand your site structure.
html
<script type="application/ld+json">
{
  "@context": "https://schema.org",
  "@type": "WebSite",
  "name": "Vub",
  "url": "https://vub.be",
  "potentialAction": {
    "@type": "SearchAction",
    "target": "https://vub.be/search?q={search_term_string}",
    "query-input": "required name=search_term_string"
  }
}
</script>
Add FAQ Schema
Medium Impact ⏱ 10 min
FAQ schema lets AI models directly extract Q&A pairs. This is the easiest way to get featured in AI responses.
html
<script type="application/ld+json">
{
  "@context": "https://schema.org",
  "@type": "FAQPage",
  "mainEntity": [
    {
      "@type": "Question",
      "name": "What is Vub?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Add your answer here — describe what Vub does in 1-2 sentences."
      }
    },
    {
      "@type": "Question",
      "name": "How does Vub work?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Explain the key features and how users interact with Vub."
      }
    }
  ]
}
</script>
📈

Projected Impact

ROI EST.

If you apply the patches above, here's the estimated improvement for vub.be:

Current Score
80
Projected Score
96
Improvement
+16 pts
Add Organization schema +6 pts
Add WebSite schema +4 pts
Reduce token bloat +3 pts
Add FAQ schema +3 pts

*Estimates based on SEODiff's scoring model. Actual results depend on implementation quality.

📋 Data Export

Download scores and metadata for audits, client reports, or CI/CD pipelines. Exports contain computed metrics only (no copyrighted content).

All data is generated automatically and updated with each crawl. JSON exports contain scores and metadata only (no copyrighted content).

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🧭 Self-Diffing (Private Layer)

For owned domains, combine this world snapshot with private drift + regression history.
Template Drift
Track in My Site
Drift → Traffic Impact
In development coming soon
Regression Incidents
Track in My Site
Internal Linking
Deep Audit graph
Semantic Structure
GEO view in Deep Audit
Content Quality
Thin/duplicate tracking

🕒 History

Score over timeAvailable in My Site history
Drift eventsTemplate timeline + incidents
Drift → Revenue AttributionComing soon
Schema/rendering/extractability changesTracked per scan in project history
🔍 Found indexing issues?
Run a free deep audit to diagnose crawled-not-indexed, soft 404s, redirect errors, and more.
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