The AI-Readiness profile for railf.jp is strong: an ACRI of 79/100 places it ahead of 91% of domains in the index. Compared to other infrastructure sites (avg score: 57), railf.jp performs above the benchmark, suggesting strong competitive positioning in AI search. The rendering approach is hybrid, with a moderate ghost ratio of 15% — most content is accessible without JS, though some elements are client-rendered. Token bloat registers at 9.0× — acceptable, but reducing inline scripts and redundant markup could yield measurable gains. The site includes 3 schema blocks, providing adequate structured data for basic entity recognition. The site maintains an open-door policy for AI crawlers — GPTBot, ClaudeBot, and other major agents are all allowed.
🧮 Score Transparency — How is this calculated?
📊 ACRI Sub-Scores (AI Readiness Detail)
railf.jp has balanced Google and AI visibility — both rank roughly in the same tier. ACRI measures technical crawler readiness. Read the methodology →
Why railf.jp ranks here
Fastest improvements
- Reduce token bloat (navigation/footer/code) so agents reach your main content faster (see Token Bloat).
- 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
58/100 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 2
- ✓ Has <h2> headings — found 17
- ✓ <h2> not before <h1>
🔍 Indexability
- ✓ Canonical tag present →
http://railf.jp - ✓ No noindex directive
- ✓ Meta viewport set
- ✓ HTML lang attribute →
ja - ➖ Hreflang tags — N/A (single language site)
- ✓ Googlebot allowed by robots.txt
🌐 Social / OpenGraph
- ✓ og:title — 鉄道ファン・railf.jp
- ✓ og:description — 月刊『鉄道ファン』公式サイト
- ✓ 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
76/100 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
👻 Rendering (Ghost Ratio) Docs
📊 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-VERIFIEDSEODiff AI analyzed the extracted content of railf.jp 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
68/100 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
- ✗ 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
70/100 15 % of Global Score 🟡 Medium Confidence🗺️ Sitemap & Robots
- ✗ Sitemap declared in robots.txt
- ✓ 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 → ja
- ✓ 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 63/100. Reach 80+ to unlock the green "AI-Verified" badge. Fix the issues below to improve your score.
<a href="https://seodiff.io/radar/domains/railf.jp" rel="noopener"><img src="https://seodiff.io/api/v1/badge?domain=railf.jp" 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 47 pages · Deep-10
Homepage scores 63, but internal pages average only 45 — a -19-point gap. Blogs, docs, and legacy content are dragging down AI readability site-wide.
Poorly formatted tables or pricing grids on 1 page will be split incorrectly during RAG chunking, causing AI models to hallucinate prices and features.
| Page | Type | ACRI | Token Bloat | Words | Status |
|---|---|---|---|---|---|
| pricing | 65 | 41.2× | 256 | 💰 Pricing | |
| pricing | 65 | 45.2× | 233 | 💰 Pricing | |
| pricing | 65 | 44.3× | 238 | 💰 Pricing | |
| pricing | 65 | 41.4× | 268 | 💰 Pricing | |
| pricing | 65 | 46.9× | 240 | 💰 Pricing | |
| pricing | 65 | 44.9× | 240 | 💰 Pricing | |
| pricing | 62 | 46.8× | 227 | 💰 Pricing | |
| pricing | 62 | 48.2× | 214 | 💰 Pricing | |
| pricing | 60 | 44.0× | 239 | 💰 Pricing | |
| pricing | 60 | 43.1× | 261 | ⚠️ RAG Fracture | |
| pricing | 60 | 43.2× | 245 | 💰 Pricing | |
| other | 55 | 93.5× | 86 | ✓ | |
| other | 55 | 93.6× | 86 | ✓ | |
| other | 55 | 96.1× | 84 | ✓ | |
| other | 55 | 96.9× | 86 | ✓ | |
| pricing | 55 | 74.7× | 116 | 💰 Pricing | |
| pricing | 55 | 73.5× | 121 | 💰 Pricing | |
| pricing | 55 | 82.4× | 102 | 💰 Pricing | |
| pricing | 55 | 62.4× | 145 | 💰 Pricing | |
| pricing | 55 | 80.4× | 103 | 💰 Pricing |
| Path | Pages | Avg ACRI | Ghost % | Bloat | Top Issue |
|---|---|---|---|---|---|
| /news/ | 25 | 54 | 0% | 84.3× | High JS Bloat |
| /event/ | 11 | 63 | 0% | 44.5× | High JS Bloat |
| /integrations/ | 1 | 0 | 0% | 0.0× | Low AI Readiness |
| /case-studies/ | 1 | 0 | 0% | 0.0× | Low AI Readiness |
| /contact/ | 1 | 0 | 0% | 0.0× | Low AI Readiness |
| /blog/ | 1 | 0 | 0% | 0.0× | Low AI Readiness |
| /japan_railfan_magazine/ | 1 | 50 | 0% | 81.7× | High JS Bloat |
| /products/ | 1 | 0 | 0% | 0.0× | Low AI Readiness |
| /about/ | 1 | 0 | 0% | 0.0× | Low AI Readiness |
| /features/ | 1 | 0 | 0% | 0.0× | Low AI Readiness |
| /faq/ | 1 | 0 | 0% | 0.0× | Low AI Readiness |
| /docs/ | 1 | 0 | 0% | 0.0× | Low AI Readiness |
| /pricing/ | 1 | 0 | 0% | 0.0× | Low AI Readiness |
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/railf.jpGet your free API key — 100 requests/month included.
🔗 Similar infrastructure Sites
Domains with a similar tech stack, industry, and AI readiness profile to railf.jp. Compare side-by-side.
| Domain | ACRI | AI Score | Tech Stack | Token Bloat | Schema | |
|---|---|---|---|---|---|---|
| railf.jp (this site) | 63 | 79 | Custom / Proprietary | 9.0× | 3 | — |
| educationdirectory.com.au | 86 | 87 | Custom / Proprietary | 5.1× | 4 | Compare → |
| melbourneschool.com | 86 | 87 | Custom / Proprietary | 5.0× | 4 | Compare → |
| pubsandclubs.com.au | 86 | 87 | Custom / Proprietary | 4.9× | 4 | Compare → |
| insuranceyet.com | 86 | 87 | Custom / Proprietary | 4.9× | 4 | Compare → |
| kondela.hu | 86 | 93 | Custom / Proprietary | 3.1× | 4 | Compare → |
📊 Semantic Share of Voice
How often would an AI cite railf.jp 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-PASTEAuto-generated code fixes tailored to railf.jp. 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": "Railf",
"url": "https://railf.jp",
"logo": "https://railf.jp/logo.png",
"sameAs": []
}
</script>
Projected Impact
ROI EST.If you apply the patches above, here's the estimated improvement for railf.jp:
*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 →