studysapuri.jp 55 D
🛡️ SEO 38 🤖 GEO 55 ⚡ Perf 62 🏗️ Arch 74

studysapuri.jp — Global SEODiff Score 55/100

studysapuri.jp
📊

studysapuri.jp shows strong AI visibility with an ACRI of 76/100, outperforming 83% of indexed domains. In the infrastructure sector, studysapuri.jp outperforms the average (57), suggesting strong competitive positioning in AI search. The low ghost ratio (5%) confirms that what crawlers see matches what users see — a hallmark of strong SSR implementation. The bloated 26.3× token ratio highlights an urgent need to clean up non-content markup, scripts, and navigation clutter. The complete absence of JSON-LD schema is a missed opportunity: even basic Organization markup would improve how AI crawlers understand this domain. Partial bot access means the domain is visible to some AI systems but not accessible to others — ClaudeBot remain blocked.

55
D — Global SEODiff Score
Comprehensive search visibility assessment
Below average — Traditional SEO (38) has the most room for improvement.
🎯 Top Fix: Reduce token bloat (26×) → +5–10 pts
🔬 Automated SEODiff Assessment · Snapshot: Mar 21, 2026 · 📋 API
📈 ACRI Trend 7 snapshots
Feb 23 Mar 21
🔔 Recent AI Indexing Activity
No recent changes detected by adaptive crawler.
Does your site score higher than studysapuri.jp?
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)38 × 0.25 = 9.5
🤖 AI Readiness / GEO (40% weight)55 × 0.40 = 22.0
⚡ Performance (20% weight)62 × 0.20 = 12.4
🏗️ Architecture & Trust (15% weight)74 × 0.15 = 11.1
Weighted sum = 9.5 + 22.0 + 12.4 + 11.1
Global SEODiff Score = 55 (D)
📊 ACRI Sub-Scores (AI Readiness Detail)
80
Bot Access
avg 92
99
Rendering
avg 93
100
Structure
avg 35
0
Schema
avg 9
70
Tech Stack
avg 63
🔀
Visibility Delta: Google vs AI
Google (Tranco)
Top 7%
Rank #68407
+11 pts
Gap
AI (ACRI)
Top 17%
Score 76/100

studysapuri.jp shows stronger AI visibility than traditional SEO ranking. Great AI foundation to build on. ACRI measures technical crawler readiness. Read the methodology →

Why studysapuri.jp ranks here

Tech stackNext.js
RenderingSSR
Schema coverage0 blocks
Token bloat26.3×

Fastest improvements

  • Allow ClaudeBot (many assistants rely on it) — blocking it often correlates with “AI invisibility.”
  • Add basic Organization and WebSite JSON-LD to fix “0 schema blocks” (see Schema Coverage).
  • 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

38/100 25 % of Global Score 🟢 High Confidence

📝 Title Tag

75 chars
Too long

Optimal range: 30–60 characters for SERP display.

📋 Meta Description

292 chars
Too long

Optimal range: 120–160 characters for snippet control.

🔤 Heading Hierarchy

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

🔍 Indexability

  • ✓ Canonical tag present → https://studysapuri.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 — 【公式】スタディサプリ|大人の英語も、受験勉強も。
  • ✓ og:description — 小中高校生向けに、4万本以上のプロ講師の授業動画が見放題!分かりやすいと評判の「神授業」だから短時間でギュッと効率的に成績アップが目指せる!塾や予備校・通信教育を圧倒的に下回る料金でご提供します。
  • ✓ og:image — preview
  • ✓ twitter:card — summary_large_image
📐 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

55/100 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 →
studysapuri.jp
48
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)
Blocked
CCBot (Common Crawl)
Allowed
Google-Extended
Allowed
Googlebot
Allowed
💡ClaudeBot is blocked. To be cited by Claude, allow ClaudeBot in robots.txt.

👻 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 91 elements (91 lists, 0 rows, 0 headers)
Total Words212
Raw Density42.9%

🏷️ Schema Health Docs

Organization Schema ❌ Missing
Product / Service Schema ⚠️ Not Found
Total Schema Blocks0 — No JSON-LD detected

Schema Coverage Map

0/7 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.
💡FAQ schema missing. Adding FAQPage schema lets AI models directly extract Q&A pairs for Featured Snippets and chatbot answers.
💡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
Medium
Crawl Cost
Low
Blocklist Risk
Extractability59/100 — AI models can partially extract answers from this page
Crawl CostMedium (50/100) — moderate for AI crawlers to process
Blocklist RiskLow — 1 of 5 AI crawlers blocked

Token Bloat Research

3%
🗑️ 97%
Useful Content (5.3 KB)Bloat (135.2 KB)
Token Bloat Ratio26.3× — Heavy

Multimodal Readiness

Visual Context68% Optimized for Vision
Image Alt Coverage15 / 22 images have alt text

TDM Rights

TDM-Reservation HeaderNot set
X-Robots-Tag: noaiNot set
💡Your HTML is 140.5 KB, but only 5.3 KB is text. 3% useful / 97% bloat. AI crawlers have limited context windows (e.g. 128k tokens). This level of bloat (26.3×) risks context-window truncation by ChatGPT, Claude, and Gemini. Reduce inline scripts, CSS, hydration payloads, and tracking code.

🔥 Structural Entropy Check Research

0 Entropy
Poor Token Bloat: High
Noise Ratio: 96.2% · SNR: 0.04 · Signal: 1367 / Noise: 34599 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 studysapuri.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.

Core Offering
StudySapy provides online learning resources for English language acquisition and academic study support.
Target Audience
Students (elementary to university), parents, educators, and adult learners seeking English proficiency.
Pricing Model
Subscription-based with tiered pricing, offering a free trial and various course packages.
🏆 Competitive Moat
Comprehensive curriculum and personalized learning paths tailored to diverse educational needs.
📊 Content Depth
5/10
Analyzed by SEODiff AI · 2026-03-03

🔧 Tech Stack

FrameworkNext.js
AI-Readiness Score70/100
Servernginx
CDN
HTTP Status200
Load Time1258 ms
Raw HTML Size140.5 KB
Visible Text Size5.3 KB

Performance & Speed

62/100 20 % of Global Score 🟢 High Confidence

⏱️ Time to First Byte

1258 ms
Slow — bots may time out or deprioritise

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

📦 Page Weight

515
DOM nodes
140 KB
HTML payload
Moderate weight — acceptable for most scenarios

🗄️ Cache & CDN

  • ✗ Cache-Control header
  • ✗ 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

74/100 15 % of Global Score 🟢 High Confidence

🗺️ Sitemap & Robots

  • ✓ Sitemap declared in robots.txt → https://studysapuri.jp/sitemap.xml
  • ✓ Googlebot allowed
  • ✓ GPTBot allowed
  • ✗ ClaudeBot allowed

🔗 Linking

75
internal links
53
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 48/100. Reach 80+ to unlock the green "AI-Verified" badge. Fix the issues below to improve your score.

AI-Verified badge for studysapuri.jp
Pending Audit — score below 80 threshold
<a href="https://seodiff.io/radar/domains/studysapuri.jp" rel="noopener"><img src="https://seodiff.io/api/v1/badge?domain=studysapuri.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 59 pages · Deep-10

Homepage ACRI
48
Single-page score
-26
Severe hidden bloat
Δ delta
Site-Wide ACRI
23
Avg across 59 pages · Range 0–46
🔍
Hidden Bloat Detected

Homepage scores 48, but internal pages average only 23 — a -26-point gap. Blogs, docs, and legacy content are dragging down AI readability site-wide.

Topical Cohesion
3%
Topical Drift
TF-IDF cosine similarity
Total Words
2608
Avg Bloat
301.3×
Page Type ACRI Token Bloat Words Status
https://studysapuri.jp/course/elementary/pricing/
料金(塾・通信教育との比較)|スタディサプリ小学講座
pricing 46 134.3× 207 💰 Pricing
https://studysapuri.jp/course/junior/pricing/
料金|スタディサプリ中学講座
pricing 36 140.6× 191 💰 Pricing
https://studysapuri.jp/course/high/pricing/
料金(塾・予備校との比較)|スタディサプリ高校講座
pricing 36 228.0× 158 💰 Pricing
https://studysapuri.jp/course/entrance-exam/pricing/
料金(塾・予備校との比較)|スタディサプリ大学受験講座
pricing 36 229.1× 158 💰 Pricing
https://studysapuri.jp/about
【公式】スタディサプリ|大人の英語も、受験勉強も。
pricing 33 436.0× 64 💰 Pricing
https://studysapuri.jp/course/guide/movielist/high/index.html
高校生・大学受験生の授業動画「通年講座一覧」 | スタディサプリ
blog 32 129.0× 30
https://studysapuri.jp/course/guide/movielist/high/english/index.html
高校英語のわかりやすい動画解説 | スタディサプリ
blog 32 99.4× 42
https://studysapuri.jp/course/guide/movielist/high/social_studies/index.html
高校社会のわかりやすい動画解説 | スタディサプリ
blog 32 99.4× 42
https://studysapuri.jp/course/guide/movielist/high/math/index.html
高校数学のわかりやすい動画解説 | スタディサプリ
blog 32 99.3× 42
https://studysapuri.jp/course/guide/movielist/high/japanese/index.html
高校国語のわかりやすい動画解説 | スタディサプリ
blog 32 99.4× 42
https://studysapuri.jp/course/guide/movielist/high/science/index.html
高校理科のわかりやすい動画解説 | スタディサプリ
blog 32 99.4× 42
https://studysapuri.jp/course/junior/faq/
よくある質問|スタディサプリ中学講座
pricing 26 465.4× 39 💰 Pricing
https://studysapuri.jp/course/guide/movielist/high/english/EKZB320000/index.html
[新版] 高1・高2 スタンダードレベル英語<文法・読解編>のテスト対策・問題|スタディサプリ
blog 22 352.3× 37
https://studysapuri.jp/course/guide/movielist/high/english/KZ375000/index.html
高1・高2 ハイレベル英語<文法編>のテスト対策・問題|スタディサプリ
blog 22 361.4× 36
https://studysapuri.jp/course/guide/movielist/high/english/MKZA49000/index.html
【英語音声付き】高1・高2 ハイレベル英語<読解編>のテスト対策・問題|スタディサプリ
blog 22 361.9× 36
https://studysapuri.jp/course/guide/movielist/high/english/KZA35000/index.html
高1・高2 トップレベル英語<文法編>のテスト対策・問題|スタディサプリ
blog 22 361.4× 36
https://studysapuri.jp/course/guide/movielist/high/english/MKZA47000/index.html
【英語音声付き】高1・高2 トップレベル英語<読解編>のテスト対策・問題|スタディサプリ
blog 22 362.0× 36
https://studysapuri.jp/course/guide/movielist/high/english/KZ110000/index.html
高1・高2 英語<英単語入門編>のテスト対策・問題|スタディサプリ
blog 22 361.2× 36
https://studysapuri.jp/course/guide/movielist/high/english/KZ288000/index.html
ベーシックレベル英語のテスト対策・問題|スタディサプリ
blog 22 371.3× 35
https://studysapuri.jp/course/guide/movielist/high/math/KZA43000/index.html
高1・高2 スタンダードレベル数学IAIIBのテスト対策・問題|スタディサプリ
blog 22 361.4× 36
Showing 20 of 59 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
/course/ 54 24 1% 321.1× Bot Blocked
/docs/ 1 0 0% 0.0× Low AI Readiness
/case-studies/ 1 0 0% 0.0× Low AI Readiness
/about/ 1 33 1% 436.0× Bot Blocked
/products/ 1 0 0% 0.0× Low AI Readiness
/blog/ 1 0 0% 0.0× Low AI Readiness
🔗
Outbound External Citations
0 unique external domains cited across 59 pages
recruit.co.jp ×55
cdn.p.recruit.co.jp ×55
apps.apple.com ×55
play.google.com ×55
twitter.com ×55
youtube.com ×55
itunes.apple.com ×55
manage.studysapuri.jp ×54
🔄 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/studysapuri.jp

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

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📊 Semantic Share of Voice

How often would an AI cite studysapuri.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-PASTE

Auto-generated code fixes tailored to studysapuri.jp. 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": "Studysapuri",
  "url": "https://studysapuri.jp",
  "logo": "https://studysapuri.jp/favicon.ico?94d3be3cf083300e",
  "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": "Studysapuri",
  "url": "https://studysapuri.jp",
  "potentialAction": {
    "@type": "SearchAction",
    "target": "https://studysapuri.jp/search?q={search_term_string}",
    "query-input": "required name=search_term_string"
  }
}
</script>
Allow ClaudeBot in robots.txt
Medium Impact ⏱ 2 min
ClaudeBot is restricted — Claude may not be able to cite your content. Many AI assistants rely on it.
text
User-agent: ClaudeBot
Allow: /

User-agent: anthropic-ai
Allow: /
Reduce Token Bloat
Medium Impact ⏱ 1–2 hrs
Only 3% of your HTML is useful content. AI crawlers waste context window tokens on bloat.
html
<!-- Move inline CSS to external stylesheets -->
<link rel="stylesheet" href="/css/main.css">

<!-- Move inline scripts to external files with defer -->
<script src="/js/app.js" defer></script>

<!-- Remove duplicate navigation blocks -->
<!-- Keep only ONE <nav> in the <header> -->

<!-- Ensure <main> wraps your primary content -->
<main>
  <!-- Your content here — this is what AI sees first -->
</main>
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 Studysapuri?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Add your answer here — describe what Studysapuri does in 1-2 sentences."
      }
    },
    {
      "@type": "Question",
      "name": "How does Studysapuri work?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Explain the key features and how users interact with Studysapuri."
      }
    }
  ]
}
</script>
📈

Projected Impact

ROI EST.

If you apply the patches above, here's the estimated improvement for studysapuri.jp:

Current Score
76
Projected Score
99
Improvement
+23 pts
Allow ClaudeBot +5 pts
Add Organization schema +6 pts
Add WebSite schema +4 pts
Reduce token bloat +5 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
🔍 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 →