jcu.cz 62 C
🛡️ SEO 39 🤖 GEO 88 ⚡ Perf 33 🏗️ Arch 68

jcu.cz — Global SEODiff Score 62/100

jcu.cz
📊

jcu.cz shows strong AI visibility with an ACRI of 84/100, outperforming 98% of indexed domains. In the education sector, jcu.cz outperforms the average (57), suggesting strong competitive positioning in AI search. Server-side rendering keeps the ghost ratio near zero, giving AI systems direct access to all visible content. The token bloat ratio sits at a lean 4.0×, meaning the ratio of code to visible content is efficient — crawlers spend their token budget on actual information. 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.

62
C — Global SEODiff Score
Comprehensive search visibility assessment
Strong foundations, but Performance (33) is your bottleneck.
🎯 Top Fix: Add HSTS header → +2 pts
🔬 Automated SEODiff Assessment · Snapshot: Mar 21, 2026 · 📋 API
📈 ACRI Trend 11 snapshots
Feb 23 Mar 21
🔔 Recent AI Indexing Activity
📈 Mar 21 ACRI +1 (74→75)
🔄 Mar 20 Content change detected
🔄 Mar 19 Content change detected
📉 Mar 16 ACRI -1 (75→74)
📈 Mar 11 ACRI +1 (74→75)
Does your site score higher than jcu.cz?
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🧮 Score Transparency — How is this calculated?
🛡️ Traditional SEO (25% weight)39 × 0.25 = 9.8
🤖 AI Readiness / GEO (40% weight)88 × 0.40 = 35.2
⚡ Performance (20% weight)33 × 0.20 = 6.6
🏗️ Architecture & Trust (15% weight)68 × 0.15 = 10.2
Weighted sum = 9.8 + 35.2 + 6.6 + 10.2
Global SEODiff Score = 62 (C)
📊 ACRI Sub-Scores (AI Readiness Detail)
100
Bot Access
avg 92
100
Rendering
avg 93
84
Structure
avg 35
42
Schema
avg 9
60
Tech Stack
avg 63
🔀
Visibility Delta: Google vs AI
Google (Tranco)
Top 7%
Rank #65628
Aligned
Gap
AI (ACRI)
Top 2%
Score 84/100

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

Why jcu.cz ranks here

Tech stackJoomla
Industryeducation
RenderingSSR
Schema coverage1 blocks
Token bloat4.0×

Fastest improvements

  • You’re already in decent shape — the next moat is monitoring drift over time.
  • 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

39/100 25 % of Global Score 🟡 Medium Confidence

📝 Title Tag

57 chars
Good length

Optimal range: 30–60 characters for SERP display.

📋 Meta Description

0 chars
Missing

Optimal range: 120–160 characters for snippet control.

🔤 Heading Hierarchy

  • ✗ Exactly 1 <h1> tag — found 0
  • ✓ Has <h2> headings — found 6
  • ✗ <h2> not before <h1>

🔍 Indexability

  • ✗ Canonical tag present
  • ✓ No noindex directive
  • ✓ Meta viewport set
  • ✓ HTML lang attribute → cs-cz
  • ✅ Hreflang tags
  • ✓ Googlebot allowed by robots.txt

🌐 Social / OpenGraph

  • ✗ og:title
  • ✗ og:description
  • ✗ og:image
  • ✗ 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

88/100 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, rndirectors.com (ACRI: 85) 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 →
jcu.cz
75
Your ACRI Score
85
Industry Peer ACRI
AI models prioritize pages with strong semantic structure and schema coverage. rndirectors.com has schema coverage of 4 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 0%
0% — Safe 50% 100% — Risk
Status Server-Side Rendered (Safe)
Rendering Type SSR

📊 Structure & Information Density Docs

Structure Grade 84/100 — Excellent
Structured Elements 420 elements (420 lists, 0 rows, 0 headers)
Total Words1963
Raw Density21.4%

🏷️ Schema Health Docs

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

Schema Coverage Map

3/7 schema types detected
✅ Organization
❌ Product/Service
❌ Breadcrumb
❌ FAQ
✅ Article
✅ WebSite
💡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.

📐 AI Efficiency Metrics Docs

81
AI Extractability
Medium
Crawl Cost
None
Blocklist Risk
Extractability81/100 — 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

25%
🗑️ 75%
Useful Content (96.5 KB)Bloat (289.1 KB)
Token Bloat Ratio4.0× — Lean

Multimodal Readiness

Visual Context8% Optimized for Vision
Image Alt Coverage6 / 80 images have alt text

TDM Rights

TDM-Reservation HeaderNot set
X-Robots-Tag: noaiNot set
💡Only 8% of images have alt text. Add descriptive alt attributes so multimodal AI (ChatGPT Vision) can understand your images.

🔥 Structural Entropy Check Research

25 Entropy
Poor Token Bloat: High
Noise Ratio: 75.0% · SNR: 0.33 · Signal: 24700 / Noise: 74015 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 jcu.cz 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
Jihočeská univerzita provides information about its programs and services to prospective students.
Target Audience
Prospective students, parents
Pricing Model
⚠ SEMANTIC VOID
🏆 Competitive Moat
SEMANTIC VOID
📊 Content Depth
2/10
Analyzed by SEODiff AI · 2026-02-28

🔧 Tech Stack

FrameworkJoomla
AI-Readiness Score60/100
Servernginx/1.26.3
CDN
HTTP Status200
Load Time1889 ms
Raw HTML Size385.6 KB
Visible Text Size96.5 KB

Performance & Speed

33/100 20 % of Global Score 🟢 High Confidence

⏱️ Time to First Byte

1889 ms
Slow — bots may time out or deprioritise

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

📦 Page Weight

3663
DOM nodes
386 KB
HTML payload
Heavy page — consider reducing DOM complexity

🗄️ Cache & CDN

  • ✓ Cache-Control header → no-store, no-cache, must-revalidate, post-check=0, pre-check=0
  • ✗ 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

68/100 15 % of Global Score 🟢 High Confidence

🗺️ Sitemap & Robots

  • ✓ Sitemap declared in robots.txt → https://www.jcu.cz/index.php?option=com_jmap&view=sitemap&format=xml&lang=cz
  • ✓ Googlebot allowed
  • ✓ GPTBot allowed
  • ✓ ClaudeBot allowed

🔗 Linking

508
internal links
8
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 → cs-cz
  • ✓ 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 75/100. Reach 80+ to unlock the green "AI-Verified" badge. Fix the issues below to improve your score.

AI-Verified badge for jcu.cz
Pending Audit — score below 80 threshold
<a href="https://seodiff.io/radar/domains/jcu.cz" rel="noopener"><img src="https://seodiff.io/api/v1/badge?domain=jcu.cz" 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 73 pages · Deep-10

Homepage ACRI
75
Single-page score
-25
Severe hidden bloat
Δ delta
Site-Wide ACRI
51
Avg across 73 pages · Range 0–75
🔍
Hidden Bloat Detected

Homepage scores 75, but internal pages average only 51 — a -25-point gap. Blogs, docs, and legacy content are dragging down AI readability site-wide.

Topical Cohesion
7%
Topical Drift
TF-IDF cosine similarity
Total Words
68543
Avg Bloat
56.4×
RAG Fractures [?]
2
⚠️
2 RAG-Chunking Fractures Detected

Poorly formatted tables or pricing grids on 2 pages will be split incorrectly during RAG chunking, causing AI models to hallucinate prices and features.

Page Type ACRI Token Bloat Words Status
https://www.jcu.cz/cz/mezinarodni-spoluprace/partnerske-univerzity
Jihočeská univerzita v Českých Budějovicích - Partnerské univerzity
pricing 75 15.8× 4859 💰 Pricing
https://www.jcu.cz/cz/univerzita/organy/akademicky-senat-ju
Jihočeská univerzita v Českých Budějovicích - Akademický senát JU
other 75 11.3× 6629
https://www.jcu.cz/cz/veda-a-vyzkum/grantova-agentura-ju
Jihočeská univerzita v Českých Budějovicích - Grantová agentura JU
pricing 72 18.9× 3989 💰 Pricing
https://www.jcu.cz/cz/univerzita/o-univerzite
Jihočeská univerzita v Českých Budějovicích - O univerzitě
other 67 43.2× 1606
https://www.jcu.cz/cz/prijimaci-zkousky/prijimaci-rizeni
Jihočeská univerzita v Českých Budějovicích - Přijímací řízení
other 67 43.2× 1556
https://www.jcu.cz/cz/veda-a-vyzkum/cestne-doktoraty
Jihočeská univerzita v Českých Budějovicích - Čestné doktoráty
other 67 33.5× 2204
https://www.jcu.cz/cz/univerzita/ostatni-pracoviste/centrum-informacnich-technologii
Jihočeská univerzita v Českých Budějovicích - Centrum informačních technologií
other 67 36.6× 1761
https://www.jcu.cz/cz/univerzita/ostatni-pracoviste/predskolni-zarizeni-ju-detska-skupina-kvitek
Jihočeská univerzita v Českých Budějovicích - Předškolní zařízení JU - Dětská skupina Kvítek
other 67 43.7× 1518
https://www.jcu.cz/cz/univerzita/uredni-deska/aktualni-informace
Jihočeská univerzita v Českých Budějovicích - Aktuální informace
other 67 37.8× 1737
https://www.jcu.cz/cz/veda-a-vyzkum/habilitacni-a-jmenovaci-rizeni
Jihočeská univerzita v Českých Budějovicích - Habilitační a jmenovací řízení
pricing 67 20.2× 4226 ⚠️ RAG Fracture
https://www.jcu.cz/cz/studium/organizace-studia
Jihočeská univerzita v Českých Budějovicích - Organizace studia
other 64 89.7× 691
https://www.jcu.cz/cz/veda-a-vyzkum/op-jak-navraty
Jihočeská univerzita v Českých Budějovicích - OP JAK Návraty
other 64 93.0× 662
https://www.jcu.cz/cz/univerzita/aula-ju/2-patro
Jihočeská univerzita v Českých Budějovicích - Aula JU 2.patro
other 64 86.1× 738
https://www.jcu.cz/cz/univerzita/aula-ju/1-patro
Jihočeská univerzita v Českých Budějovicích - Aula JU 1.patro
other 64 62.8× 1024
https://www.jcu.cz/cz/univerzita/aula-ju/prizemi
Jihočeská univerzita v Českých Budějovicích - Aula JU přízemí
other 64 87.9× 730
https://www.jcu.cz/cz/univerzita/aula-ju
Jihočeská univerzita v Českých Budějovicích - Aula JU
pricing 64 60.5× 1080 💰 Pricing
https://www.jcu.cz/cz/studium/harmonogram-akademickeho-roku
Jihočeská univerzita v Českých Budějovicích - Harmonogram akademického roku
other 64 89.9× 687
https://www.jcu.cz/cz/univerzita/kreativeucz
Jihočeská univerzita v Českých Budějovicích - KreativEU
other 64 59.7× 1078
https://www.jcu.cz/cz/mezinarodni-spoluprace/metodiky-a-prirucky-pro-koordinatory
Jihočeská univerzita v Českých Budějovicích - Metodiky a příručky pro koordinátory
pricing 64 92.2× 672 💰 Pricing
https://www.jcu.cz/cz/univerzita/dokumenty/kolektivni-smlouva/dohoda-o-jinem-postupu-zamestnavatele-pri-sjednavani-a-opakovani-pracovniho-pomeru-na-dobu-urcitou
Jihočeská univerzita v Českých Budějovicích - Dohoda o jiném postupu zaměstnavatele při sjednávání a opakování pracovního poměru na dobu určitou
other 64 89.1× 697
Showing 20 of 73 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
/cz/ 57 65 0% 72.3× High JS Bloat
/solutions/ 1 0 0% 0.0× Low AI Readiness
/blog/ 1 0 0% 0.0× Low AI Readiness
/faq/ 1 0 0% 0.0× Low AI Readiness
/pricing/ 1 0 0% 0.0× Low AI Readiness
/careers/ 1 0 0% 0.0× Low AI Readiness
/help/ 1 0 0% 0.0× Low AI Readiness
/features/ 1 0 0% 0.0× Low AI Readiness
/privacy/ 1 0 0% 0.0× Low AI Readiness
/about/ 1 0 0% 0.0× Low AI Readiness
/terms/ 1 0 0% 0.0× Low AI Readiness
/integrations/ 1 0 0% 0.0× Low AI Readiness
/products/ 1 0 0% 0.0× Low AI Readiness
/docs/ 1 0 0% 0.0× Low AI Readiness
/contact/ 1 0 0% 0.0× Low AI Readiness
🔗
Outbound External Citations
0 unique external domains cited across 73 pages
frov.jcu.cz ×57
tf.jcu.cz ×57
wstag.jcu.cz ×57
lib.jcu.cz ×57
wiki.jcu.cz ×57
eshop.jcu.cz ×57
pf.jcu.cz ×57
zsf.jcu.cz ×57
🔄 Re-Crawl & Update 📡 Track this Domain

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🔌 API Access

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

curl https://seodiff.io/api/v1/deep10/domain/jcu.cz

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

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📊 Semantic Share of Voice

How often would an AI cite jcu.cz 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 jcu.cz. Copy and paste these into your codebase to improve AI visibility. These patches are mathematically proven to increase extraction accuracy →

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 Jcu?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Add your answer here — describe what Jcu does in 1-2 sentences."
      }
    },
    {
      "@type": "Question",
      "name": "How does Jcu work?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Explain the key features and how users interact with Jcu."
      }
    }
  ]
}
</script>
📈

Projected Impact

ROI EST.

If you apply the patches above, here's the estimated improvement for jcu.cz:

Current Score
84
Projected Score
87
Improvement
+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
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