AI crawlers face major barriers indexing idnes.cz, resulting in a low 15/100 ACRI rating that demands urgent attention. Within the infrastructure vertical, this places idnes.cz below the industry average of 58 —, indicating room for competitive improvement. Its server-rendered architecture ensures AI crawlers receive complete HTML on first request, a key advantage for extractability. The token bloat ratio sits at a lean 2.8×, 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. Most AI crawlers are blocked by robots.txt, severely restricting how AI-powered search engines can index and surface this content.
🧮 Score Transparency — How is this calculated?
📊 ACRI Sub-Scores (AI Readiness Detail)
idnes.cz 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 idnes.cz ranks here
Fastest improvements
- Allow GPTBot in robots.txt so AI crawlers can access your pages (see Crawl Access).
- Allow ClaudeBot (many assistants rely on it) — blocking it often correlates with “AI invisibility.”
- Create an
llms.txtfile 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 →
Traditional SEO
50/100 25 % of Global Score 🟢 High Confidence📝 Title Tag
Optimal range: 30–60 characters for SERP display.
📋 Meta Description
Optimal range: 120–160 characters for snippet control.
🔤 Heading Hierarchy
- ✓ Exactly 1 <h1> tag — found 1
- ✓ Has <h2> headings — found 13
- ✓ <h2> not before <h1>
🔍 Indexability
- ✓ Canonical tag present →
https://www.idnes.cz/ - ✓ No noindex directive
- ✓ Meta viewport set
- ✓ HTML lang attribute →
cs - ✗ Hreflang tags
- ✓ Googlebot allowed by robots.txt
🌐 Social / OpenGraph
- ✓ og:title — iDNES.cz – s námi víte víc
- ✓ og:description — Nejnovější zprávy z vašeho kraje, České republiky a celého světa.
- ✓ 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 ConfidenceThis pillar aggregates citation share, hallucination risk, bot access, schema health, and content extractability. The individual diagnostic sections below contribute to this score.
Is AI lying about your brand? This panel measures how likely LLMs are to hallucinate facts when extracting information from your page.
🤖 Bot Access Matrix
Allow: / under User-agent: GPTBot in your robots.txt.📊 Structure & Information Density Docs
🏷️ Schema Health Docs
Schema Coverage Map
📐 AI Efficiency Metrics Docs
Token Bloat Research
Multimodal Readiness
TDM Rights
🔥 Structural Entropy Check Research
🔬 AI-Crawler Simulation
See your website the way AI crawlers do. CSS stripped, structure labeled, content chunked.
Toggle to "AI Agent View" to see what GPTBot, ClaudeBot, and other AI crawlers actually extract from this page.
AI Answer Preview
NEWSee how AI models summarize your site. Left: your actual content. Right: what the LLM extracts and says about you.
The LLM Interpretation
AI-VERIFIEDA local LLM (mlx-community/Qwen2.5-7B-Instruct-4bit) analyzed the extracted content of idnes.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.
🔧 Tech Stack
Performance & Speed
27/100 20 % of Global Score 🟢 High Confidence⏱️ Time to First Byte
Google considers <200 ms "good". AI crawlers may have even shorter timeouts.
📦 Page Weight
DOM nodes
HTML payload
🗄️ Cache & CDN
- ✓ Cache-Control header →
private,max-age=0 - ✗ CDN cache status
- ✗ CDN detected
🔬 Tracker Tax
tracker scripts
third-party domains
token overhead
📐 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
93/100 15 % of Global Score 🟢 High Confidence🗺️ Sitemap & Robots
- ✓ Sitemap declared in robots.txt →
https://www.idnes.cz/sitemap.xml - ✓ Googlebot allowed
- ✗ GPTBot allowed
- ✗ ClaudeBot allowed
🔗 Linking
internal links
external links
🔒 Security & Trust
- ✓ HSTS header (Strict-Transport-Security)
- ✓ Content-Security-Policy header
- ✓ HTTP status 200 OK (got 200)
♿ Accessibility Signals
- ✓ HTML lang attribute → cs
- ✓ 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 58/100. Reach 80+ to unlock the green "AI-Verified" badge. Fix the issues below to improve your score.
<a href="https://seodiff.io/radar/domains/idnes.cz" rel="noopener"><img src="https://seodiff.io/api/v1/badge?domain=idnes.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 3 pages · Deep-10
| Page | Type | ACRI | Token Bloat | Words | Status |
|---|---|---|---|---|---|
| legal | 82 | 2.1× | 39990 | ✓ | |
| pricing | 75 | 10.5× | 2264 | 💰 Pricing | |
| support | 44 | 7.0× | 7 | ✓ |
| Path | Pages | Avg ACRI | Ghost % | Bloat | Top Issue |
|---|---|---|---|---|---|
| /privacy/ | 1 | 82 | 0% | 2.1× | Healthy |
| /blog/ | 1 | 75 | 0% | 10.5× | High JS Bloat |
| /support/ | 1 | 44 | 0% | 7.0× | High JS Bloat |
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/idnes.czGet your free API key — 100 requests/month included.
🔗 Similar infrastructure Sites
Domains with a similar tech stack, industry, and AI readiness profile to idnes.cz. Compare side-by-side.
| Domain | ACRI | AI Score | Tech Stack | Token Bloat | Schema | |
|---|---|---|---|---|---|---|
| idnes.cz (this site) | 58 | 15 | Express | 2.8× | 1 | — |
| 38-8931.com | 83 | 87 | Express | 2.2× | 2 | Compare → |
| medpets.de | 83 | 86 | Express | 2.4× | 3 | Compare → |
| vente-unique.nl | 83 | 87 | Express | 3.2× | 3 | Compare → |
| vente-unique.se | 83 | 87 | Express | 3.3× | 3 | Compare → |
| ompong188nice.space | 83 | 85 | Express | 1.7× | 3 | Compare → |
Bait & Switch Delta
A 2 PAGESCompares your homepage rendering quality with inner pages. A high drift score means AI crawlers see a polished homepage but degraded inner content — the "bait & switch" that erodes trust.
Worst Inner Pages
E-E-A-T Trust Signals
D 30/100Trust indicators extracted from surface pages. These signals help AI systems verify your site's Experience, Expertise, Authoritativeness, and Trustworthiness.
Citation Profile
66 DOMAINSOutbound citation patterns across surface-crawled pages. Sites that cite diverse, authoritative sources signal higher E-E-A-T to AI systems.
AI trust scores for the domains idnes.cz links to. Citing high-trust sources lifts your own credibility signal.
Remediation Patches
COPY-PASTEAuto-generated code fixes tailored to idnes.cz. Copy and paste these into your codebase to improve AI visibility. These patches are mathematically proven to increase extraction accuracy →
<script type="application/ld+json">
{
"@context": "https://schema.org",
"@type": "Organization",
"name": "Idnes",
"url": "https://idnes.cz",
"logo": "https://1gr.cz/u/favicon/idnes.ico",
"sameAs": []
}
</script>
<script type="application/ld+json">
{
"@context": "https://schema.org",
"@type": "WebSite",
"name": "Idnes",
"url": "https://idnes.cz",
"potentialAction": {
"@type": "SearchAction",
"target": "https://idnes.cz/search?q={search_term_string}",
"query-input": "required name=search_term_string"
}
}
</script>
User-agent: GPTBot Allow: / User-agent: ChatGPT-User Allow: /
User-agent: ClaudeBot Allow: / User-agent: anthropic-ai Allow: /
<script type="application/ld+json">
{
"@context": "https://schema.org",
"@type": "FAQPage",
"mainEntity": [
{
"@type": "Question",
"name": "What is Idnes?",
"acceptedAnswer": {
"@type": "Answer",
"text": "Add your answer here — describe what Idnes does in 1-2 sentences."
}
},
{
"@type": "Question",
"name": "How does Idnes work?",
"acceptedAnswer": {
"@type": "Answer",
"text": "Explain the key features and how users interact with Idnes."
}
}
]
}
</script>
Projected Impact
ROI EST.If you apply the patches above, here's the estimated improvement for idnes.cz:
*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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