js88.com 70 B
🛡️ SEO 59 🤖 GEO 87 ⚡ Perf 40 🏗️ Arch 83

js88.com — Global SEODiff Score 70/100

js88.com
📊

js88.com demonstrates elite AI-Readiness, achieving an ACRI of 86/100 — placing it in the top 99% of all indexed domains. In the infrastructure sector, js88.com 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 tight 4.7× token bloat ratio reflects disciplined markup: minimal noise between the crawler and the content it needs. The site includes 2 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.

70
B — Global SEODiff Score
Comprehensive search visibility assessment
Strong foundations, but Performance (40) is your bottleneck.
🎯 Top Fix: Add HSTS header → +2 pts
🔬 Automated SEODiff Assessment · Snapshot: Feb 26, 2026 · 📋 API
Does your site score higher than js88.com?
Run the same 40-signal audit on your own domain — free, instant results.
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🧮 Score Transparency — How is this calculated?
🛡️ Traditional SEO (25% weight)59 × 0.25 = 14.8
🤖 AI Readiness / GEO (40% weight)87 × 0.40 = 34.8
⚡ Performance (20% weight)40 × 0.20 = 8.0
🏗️ Architecture & Trust (15% weight)83 × 0.15 = 12.4
Weighted sum = 14.8 + 34.8 + 8.0 + 12.4
Global SEODiff Score = 70 (B)
📊 ACRI Sub-Scores (AI Readiness Detail)
100
Bot Access
avg 92
99
Rendering
avg 93
100
Structure
avg 35
44
Schema
avg 10
50
Tech Stack
avg 64
🔀
Visibility Delta: Google vs AI
Google (Tranco)
Top 5%
Rank #52810
Aligned
Gap
AI (ACRI)
Top 1%
Score 86/100

js88.com has balanced Google and AI visibility — both rank roughly in the same tier. ACRI measures technical crawler readiness. Read the methodology →

Why js88.com ranks here

Tech stackCustom / Proprietary
RenderingSSR
Schema coverage2 blocks
Token bloat4.7×

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

59/100 25 % of Global Score 🟢 High Confidence

📝 Title Tag

62 chars
Too long

Optimal range: 30–60 characters for SERP display.

📋 Meta Description

431 chars
Too long

Optimal range: 120–160 characters for snippet control.

🔤 Heading Hierarchy

  • ✓ Exactly 1 <h1> tag — found 1
  • ✓ Has <h2> headings — found 2
  • ✓ <h2> not before <h1>

🔍 Indexability

  • ✓ Canonical tag present → https://school.js88.com
  • ✓ No noindex directive
  • ✓ Meta viewport set
  • ✓ HTML lang attribute → ja
  • ✗ Hreflang tags
  • ✓ Googlebot allowed by robots.txt

🌐 Social / OpenGraph

  • ✗ og:title
  • ✗ og:description
  • ✓ 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 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 →
js88.com
73
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 100/100 — Excellent
Structured Elements 364 elements (364 lists, 0 rows, 0 headers)
Total Words493
Raw Density73.8%

🏷️ Schema Health Docs

Organization Schema ✅ Present
Product / Service Schema ⚠️ Not Found
Total Schema Blocks2 block(s) — Basic (low value for AI)

Schema Coverage Map

2/7 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

86
AI Extractability
Low
Crawl Cost
None
Blocklist Risk
Extractability86/100 — AI models can easily 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

21%
🗑️ 79%
Useful Content (17.2 KB)Bloat (64.1 KB)
Token Bloat Ratio4.7× — Lean

Multimodal Readiness

Visual Context100% Optimized for Vision
Image Alt Coverage17 / 17 images have alt text

TDM Rights

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

🔥 Structural Entropy Check Research

8 Entropy
Poor Token Bloat: High
Noise Ratio: 78.9% · SNR: 0.27 · Signal: 4394 / Noise: 16402 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…

🔧 Tech Stack

AI-Readiness Score50/100
Servernginx
CDN
HTTP Status200
Load Time2062 ms
Raw HTML Size81.2 KB
Visible Text Size17.2 KB

Performance & Speed

40/100 20 % of Global Score 🟢 High Confidence

⏱️ Time to First Byte

2062 ms
Slow — bots may time out or deprioritise

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

📦 Page Weight

1288
DOM nodes
81 KB
HTML payload
Lean page — fast for bots and users

🗄️ Cache & CDN

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

🔬 Tracker Tax

5
tracker scripts
2
third-party domains
0.0%
token overhead
Moderate trackers — consider lazy-loading non-essential scripts
googletagmanager.comgooglesyndication.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

83/100 15 % of Global Score 🟢 High Confidence

🗺️ Sitemap & Robots

  • ✓ Sitemap declared in robots.txt → https://school.js88.com/sitemap_image.xml
  • ✓ Googlebot allowed
  • ✓ GPTBot allowed
  • ✓ ClaudeBot allowed

🔗 Linking

358
internal links
5
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 → 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 73/100. Reach 80+ to unlock the green "AI-Verified" badge. Fix the issues below to improve your score.

AI-Verified badge for js88.com
Pending Audit — score below 80 threshold
<a href="https://seodiff.io/radar/domains/js88.com" rel="noopener"><img src="https://seodiff.io/api/v1/badge?domain=js88.com" 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 10 pages · Deep-10

Homepage ACRI
73
Single-page score
-16
Moderate hidden bloat
Δ delta
Site-Wide ACRI
57
Avg across 10 pages · Range 57–57
🔍
Hidden Bloat Detected

Homepage scores 73, but internal pages average only 57 — a -16-point gap. Blogs, docs, and legacy content are dragging down AI readability site-wide.

Total Words
3830
Avg Bloat
43.4×
Ext. Citations
8
Page Type ACRI Token Bloat Words Status
https://js88.com/pricing
JS日本の学校|日本最大規模の学校情報サイト
pricing 57 43.4× 383
https://js88.com/about
JS日本の学校|日本最大規模の学校情報サイト
about 57 43.4× 383
https://js88.com/products
JS日本の学校|日本最大規模の学校情報サイト
product 57 43.4× 383
https://js88.com/features
JS日本の学校|日本最大規模の学校情報サイト
product 57 43.4× 383
https://js88.com/docs
JS日本の学校|日本最大規模の学校情報サイト
docs 57 43.4× 383
https://js88.com/blog
JS日本の学校|日本最大規模の学校情報サイト
blog 57 43.4× 383
https://js88.com/case-studies
JS日本の学校|日本最大規模の学校情報サイト
social-proof 57 43.4× 383
https://js88.com/integrations
JS日本の学校|日本最大規模の学校情報サイト
integrations 57 43.4× 383
https://js88.com/faq
JS日本の学校|日本最大規模の学校情報サイト
support 57 43.4× 383
https://js88.com/contact
JS日本の学校|日本最大規模の学校情報サイト
support 57 43.4× 383
🔗
Outbound External Citations
8 unique external domains cited across 10 pages
school.js88.com ×10
job.js88.com ×10
koushi2.js88.com ×10
eigo.js88.com ×10
privacymark.jp ×10
koushi1.js88.com ×10
js-corp.co.jp ×10
jyuku.js88.com ×10
🔄 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/js88.com

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

🔗 Similar infrastructure Sites

Domains with a similar tech stack, industry, and AI readiness profile to js88.com. Compare side-by-side.

Domain ACRI AI Score Tech Stack Token Bloat Schema
js88.com (this site) 73 86 Custom / Proprietary 4.7× 2
pianokafe.com 73 81 Custom / Proprietary 4.7× 2 Compare →
uhaul.com 73 83 Custom / Proprietary 4.7× 2 Compare →
fiestayregalos.cl 73 76 Custom / Proprietary 4.8× 2 Compare →
grafical.dk 73 77 Custom / Proprietary 4.5× 2 Compare →
paragonpurchasing.com 73 82 Custom / Proprietary 4.5× 2 Compare →
Compare All 5 Similar Sites →
🩹

Remediation Patches

COPY-PASTE

Auto-generated code fixes tailored to js88.com. 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 Js88?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Add your answer here — describe what Js88 does in 1-2 sentences."
      }
    },
    {
      "@type": "Question",
      "name": "How does Js88 work?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Explain the key features and how users interact with Js88."
      }
    }
  ]
}
</script>
📈

Projected Impact

ROI EST.

If you apply the patches above, here's the estimated improvement for js88.com:

Current Score
86
Projected Score
92
Improvement
+6 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