rekenen.nl 68 C
🛡️ SEO 58 🤖 GEO 81 ⚡ Perf 53 🏗️ Arch 72

rekenen.nl — Global SEODiff Score 68/100

rekenen.nl
📊

The AI-Readiness profile for rekenen.nl is strong: an ACRI of 71/100 places it ahead of 70% of domains in the index. In the infrastructure sector, rekenen.nl outperforms the average (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. A 5.8× bloat ratio is typical for sites in this tech tier — not wasteful, but streamlining could further boost extractability. Only 1 schema block is present — adding Organization, WebSite, and Breadcrumb schemas would significantly improve structured data coverage. Robots.txt grants unrestricted access to the key AI user-agents, which is the strongest starting position for AI visibility.

68
C — Global SEODiff Score
Comprehensive search visibility assessment
Strong foundations, but Performance (53) is your bottleneck.
🎯 Top Fix: Add HSTS header → +2 pts
🔬 Automated SEODiff Assessment · Snapshot: Mar 21, 2026 · 📋 API
📈 ACRI Trend 4 snapshots
Feb 28 Mar 21
🔔 Recent AI Indexing Activity
No recent changes detected by adaptive crawler.
Does your site score higher than rekenen.nl?
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)58 × 0.25 = 14.5
🤖 AI Readiness / GEO (40% weight)81 × 0.40 = 32.4
⚡ Performance (20% weight)53 × 0.20 = 10.6
🏗️ Architecture & Trust (15% weight)72 × 0.15 = 10.8
Weighted sum = 14.5 + 32.4 + 10.6 + 10.8
Global SEODiff Score = 68 (C)
📊 ACRI Sub-Scores (AI Readiness Detail)
100
Bot Access
avg 92
99
Rendering
avg 93
54
Structure
avg 35
2
Schema
avg 9
50
Tech Stack
avg 63
🔀
Visibility Delta: Google vs AI
Google (Tranco)
Top 8%
Rank #84311
+22 pts
Gap
AI (ACRI)
Top 30%
Score 71/100

rekenen.nl punches above its weight in AI — AI visibility exceeds Google ranking. This is a competitive moat worth protecting. ACRI measures technical crawler readiness. Read the methodology →

Why rekenen.nl ranks here

Tech stackCustom / Proprietary
RenderingSSR
Schema coverage1 blocks
Token bloat5.8×

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

58/100 25 % of Global Score 🟢 High Confidence

📝 Title Tag

55 chars
Good length

Optimal range: 30–60 characters for SERP display.

📋 Meta Description

151 chars
Good length

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.rekenen.nl/
  • ✓ No noindex directive
  • ✓ Meta viewport set
  • ✓ HTML lang attribute → nl-NL
  • ✅ Hreflang tags
  • ✓ Googlebot allowed by robots.txt

🌐 Social / OpenGraph

  • ✓ og:title — Rekenen oefenen groep 3, 4, 5, 6, 7 en 8 bij Rekenen.nl
  • ✓ og:description — Onbeperkt tafels en breuken oefenen, plus- en minsommen maken en rekenspelletjes spelen op Rekenen.nl! Hier kan je rekenen oefenen voor de basisschool.
  • ✓ 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

81/100 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 infrastructure sector, safely.co.jp (ACRI: 90) 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 →
rekenen.nl
60
Your ACRI Score
90
Industry Peer ACRI
AI models prioritize pages with strong semantic structure and schema coverage. safely.co.jp has schema coverage of 3 blocks and uses WordPress. 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 5%
0% — Safe 50% 100% — Risk
Status Server-Side Rendered (Safe)
Rendering Type SSR

📊 Structure & Information Density Docs

Structure Grade 54/100 — Fair
Structured Elements 89 elements (89 lists, 0 rows, 0 headers)
Total Words1028
Raw Density8.7%

🏷️ Schema Health Docs

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

Schema Coverage Map

1/7 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.
💡WebSite schema missing. Add WebSite + SearchAction so Google can generate a Sitelinks Search Box for your brand in AI results.

📐 AI Efficiency Metrics Docs

59
AI Extractability
Low
Crawl Cost
None
Blocklist Risk
Extractability59/100 — AI models can partially extract answers from this page
Crawl CostLow (30/100) — efficient for AI crawlers to process
Blocklist RiskNone — 0 of 5 AI crawlers blocked

Token Bloat Research

17%
🗑️ 83%
Useful Content (15.3 KB)Bloat (74.1 KB)
Token Bloat Ratio5.8× — Normal

Multimodal Readiness

Visual Context33% Optimized for Vision
Image Alt Coverage16 / 49 images have alt text

TDM Rights

TDM-Reservation HeaderNot set
X-Robots-Tag: noaiNot set
💡Only 33% of images have alt text. Add descriptive alt attributes so multimodal AI (ChatGPT Vision) can understand your images.

🔥 Structural Entropy Check Research

0 Entropy
Poor Token Bloat: High
Noise Ratio: 82.8% · SNR: 0.21 · Signal: 3927 / Noise: 18959 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 rekenen.nl 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
Redactiesommen are story-based math problems designed to practice arithmetic and reading comprehension, particularly for elementary school students.
Target Audience
Students in grades 4-7, educators, parents seeking to supplement math learning.
Pricing Model
⚠ SEMANTIC VOID
🏆 Competitive Moat
Unique blend of math practice and narrative storytelling, fostering engagement and deeper understanding of problem-solving.
📊 Content Depth
6/10
🔄 Programmatic SEO Signals
Redactiesommenverhaaltjessommenstory problems
⚡ Key Pain Points
• Lack of engaging math practice materials
• Limited integration with broader learning platforms
Analyzed by SEODiff AI · 2026-03-04

🔧 Tech Stack

AI-Readiness Score50/100
Server
CDN
HTTP Status200
Load Time1003 ms
Raw HTML Size89.4 KB
Visible Text Size15.3 KB

Performance & Speed

53/100 20 % of Global Score 🟢 High Confidence

⏱️ Time to First Byte

1003 ms
Slow — bots may time out or deprioritise

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

📦 Page Weight

881
DOM nodes
89 KB
HTML payload
Lean page — fast for bots and users

🗄️ Cache & CDN

  • ✗ Cache-Control header
  • ✗ CDN cache status
  • ✗ CDN detected

🔬 Tracker Tax

1
tracker scripts
1
third-party domains
0.0%
token overhead
Minimal tracker load — clean signal for bots
googlesyndication.com
📐 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

72/100 15 % of Global Score 🟢 High Confidence

🗺️ Sitemap & Robots

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

🔗 Linking

141
internal links
12
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-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 60/100. Reach 80+ to unlock the green "AI-Verified" badge. Fix the issues below to improve your score.

AI-Verified badge for rekenen.nl
Pending Audit — score below 80 threshold
<a href="https://seodiff.io/radar/domains/rekenen.nl" rel="noopener"><img src="https://seodiff.io/api/v1/badge?domain=rekenen.nl" 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 53 pages · Deep-10

Homepage ACRI
60
Single-page score
-22
Severe hidden bloat
Δ delta
Site-Wide ACRI
38
Avg across 53 pages · Range 0–72
🔍
Hidden Bloat Detected

Homepage scores 60, but internal pages average only 38 — a -22-point gap. Blogs, docs, and legacy content are dragging down AI readability site-wide.

Topical Cohesion
10%
Topical Drift
TF-IDF cosine similarity
Total Words
13932
Avg Bloat
29.7×
Page Type ACRI Token Bloat Words Status
https://www.rekenen.nl/redactiesommen/
Redactiesommen groep 4, 5, 6 en 7 oefenen bij Rekenen.nl
pricing 72 15.8× 657 💰 Pricing
https://www.rekenen.nl/groep-4/
Rekenen groep 4 oefenen bij Rekenen.nl
pricing 64 17.1× 516 💰 Pricing
https://www.rekenen.nl/groep-5/
Rekenen groep 5 oefenen bij Rekenen.nl
pricing 64 17.3× 556 💰 Pricing
https://www.rekenen.nl/groep-6/
Rekenen groep 6 oefenen bij Rekenen.nl
pricing 64 18.1× 518 💰 Pricing
https://www.rekenen.nl/groep-3/
Rekenen groep 3 oefenen bij Rekenen.nl
pricing 54 17.1× 434 💰 Pricing
https://www.rekenen.nl/groep-7/
Rekenen groep 7 oefenen bij Rekenen.nl
pricing 54 19.9× 341 💰 Pricing
https://www.rekenen.nl/gemengde-oefeningen/
Gemengde oefeningen - Rekenen.nl
other 49 24.2× 290
https://www.rekenen.nl/keersommen/
Keersommen oefenen doe je op Rekenen.nl
pricing 49 28.3× 287 💰 Pricing
https://www.rekenen.nl/getallenlijn/
Getallenlijn oefenen bij Rekenen.nl
other 49 26.7× 261
https://www.rekenen.nl/klokkijken/
Klokkijken oefenen groep 3, 4, 5 en 6 bij Rekenen.nl
pricing 49 24.8× 408 💰 Pricing
https://www.rekenen.nl/rekenen-met-geld/
Rekenen met geld oefenen groep 3, 4, 5 en 6 op Rekenen.nl
other 49 22.6× 443
https://www.rekenen.nl/plussommen/
Plussommen oefenen op Rekenen.nl
pricing 46 32.4× 375 💰 Pricing
https://www.rekenen.nl/minsommen/
Minsommen oefenen op rekenen.nl
pricing 46 31.7× 377 💰 Pricing
https://www.rekenen.nl/breuken/
Breuken oefenen en breuken vermenigvuldigen op rekenen.nl
pricing 46 31.9× 357 💰 Pricing
https://www.rekenen.nl/delen/
Deelsommen en staartdelingen oefenen op Rekenen.nl
pricing 46 38.0× 270 💰 Pricing
https://www.rekenen.nl/tafels-oefenen/
Tafels oefenen doe je bij Rekenen.nl
pricing 46 33.3× 376 💰 Pricing
https://www.rekenen.nl/getallen/
Getallen en tellen voor de basisschool – Rekenen.nl
other 46 31.1× 302
https://www.rekenen.nl/plus-en-minsommen/
Plus- en minsommen oefenen op Rekenen.nl
other 46 40.5× 229
https://rekenen.nl/contact
Neem contact op met Rekenen.nl
pricing 44 18.2× 173 💰 Pricing
https://www.rekenen.nl/contact/
Neem contact op met Rekenen.nl
pricing 44 18.2× 173 💰 Pricing
Showing 20 of 53 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
/groep-4/ 13 44 1% 41.9× Bot Blocked
/groep-5/ 8 45 1% 39.9× Bot Blocked
/groep-3/ 5 44 1% 39.2× Bot Blocked
/contact/ 2 44 0% 18.2× High JS Bloat
/docs/ 1 0 0% 0.0× Low AI Readiness
/case-studies/ 1 0 0% 0.0× Low AI Readiness
/integrations/ 1 0 0% 0.0× Low AI Readiness
/keersommen/ 1 49 0% 28.3× High JS Bloat
/products/ 1 0 0% 0.0× Low AI Readiness
/features/ 1 0 0% 0.0× Low AI Readiness
/breuken/ 1 46 0% 31.9× High JS Bloat
/klokkijken/ 1 49 0% 24.9× High JS Bloat
/delen/ 1 46 0% 38.0× High JS Bloat
/faq/ 1 0 0% 0.0× Low AI Readiness
/redactiesommen/ 1 72 0% 15.8× High JS Bloat
🔄 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/rekenen.nl

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

🔗 Similar infrastructure Sites

Domains with a similar tech stack, industry, and AI readiness profile to rekenen.nl. Compare side-by-side.

Domain ACRI AI Score Tech Stack Token Bloat Schema
rekenen.nl (this site) 60 71 Custom / Proprietary 5.8× 1
haoshunjia.com 85 86 Custom / Proprietary 1.3× 1 Compare →
lobbes.nl 85 86 Custom / Proprietary 1.5× 2 Compare →
gurapan.jp 85 80 Custom / Proprietary 1.5× 2 Compare →
qtponline.com 85 86 Custom / Proprietary 1.3× 2 Compare →
paradigit.nl 85 95 Custom / Proprietary 4.0× 15 Compare →
Compare All 5 Similar Sites →

📊 Semantic Share of Voice

How often would an AI cite rekenen.nl 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 rekenen.nl. 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": "Rekenen",
  "url": "https://rekenen.nl",
  "logo": "https://cdn-r-1.bvkstatic.com/nl/static/images/favicon/apple-touch-icon-57x57.png",
  "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": "Rekenen",
  "url": "https://rekenen.nl",
  "potentialAction": {
    "@type": "SearchAction",
    "target": "https://rekenen.nl/search?q={search_term_string}",
    "query-input": "required name=search_term_string"
  }
}
</script>
📈

Projected Impact

ROI EST.

If you apply the patches above, here's the estimated improvement for rekenen.nl:

Current Score
71
Projected Score
84
Improvement
+13 pts
Add Organization schema +6 pts
Add WebSite schema +4 pts
Reduce token bloat +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).

Is this your company?

Monitor your AI visibility score weekly and get alerted when changes happen.

Start Free →

🧭 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.
Free Deep Audit → GSC Error Guide →