diamond.jp 49 D
🛡️ SEO 20 🤖 GEO 66 ⚡ Perf 34 🏗️ Arch 73

diamond.jp — Global SEODiff Score 49/100

diamond.jp
📊

At 62/100, diamond.jp falls in the moderate bracket of AI-Readiness, suggesting its content is partially accessible to AI systems but not fully optimized. Within the infrastructure vertical, this places diamond.jp above the industry average of 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. The 5.3× token bloat ratio falls within the normal range, though there is room to trim navigation, footer, and script overhead. Zero schema blocks puts this site at a disadvantage in knowledge graph and AI-answer pipelines that rely on explicit structured data. The site maintains an open-door policy for AI crawlers — GPTBot, ClaudeBot, and other major agents are all allowed.

49
D — Global SEODiff Score
Comprehensive search visibility assessment
Below average — Traditional SEO (20) has the most room for improvement.
🎯 Top Fix: Add Organization + WebSite JSON-LD → +5–8 pts
🔬 Automated SEODiff Assessment · Snapshot: Mar 29, 2026 · 📋 API
📈 ACRI Trend 3 snapshots
Mar 4 Mar 15
🔔 Recent AI Indexing Activity
🔄 Mar 7 Content change detected
🔄 Mar 4 Content change detected
Does your site score higher than diamond.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)20 × 0.25 = 5.0
🤖 AI Readiness / GEO (40% weight)66 × 0.40 = 26.4
⚡ Performance (20% weight)34 × 0.20 = 6.8
🏗️ Architecture & Trust (15% weight)73 × 0.15 = 10.9
Weighted sum = 5.0 + 26.4 + 6.8 + 10.9
Global SEODiff Score = 49 (D)
📊 ACRI Sub-Scores (AI Readiness Detail)
100
Bot Access
avg 92
99
Rendering
avg 93
0
Structure
avg 35
0
Schema
avg 9
70
Tech Stack
avg 63
🔀
Visibility Delta: Google vs AI
Google (Tranco)
Top 0.7%
Rank #6670
+49 pts
Gap
AI (ACRI)
Top 49%
Score 62/100

diamond.jp 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 diamond.jp ranks here

Tech stackNext.js
RenderingSSR
Schema coverage0 blocks
Token bloat5.3×

Fastest improvements

  • 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

20/100 25 % of Global Score 🟢 High Confidence

📝 Title Tag

36 chars
Good length

Optimal range: 30–60 characters for SERP display.

📋 Meta Description

258 chars
Too long

Optimal range: 120–160 characters for snippet control.

🔤 Heading Hierarchy

  • ✗ Exactly 1 <h1> tag — found 0
  • ✓ Has <h2> headings — found 33
  • ✗ <h2> not before <h1>

🔍 Indexability

  • ✓ Canonical tag present → https://diamond.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 — ダイヤモンド・オンライン
  • ✓ og:description — ダイヤモンド社のビジネスパーソン向け情報サイト。業界を深掘りした独自特集、経営・経済・マネー情報やスキルアップ記事を提供し、ビジネスリーダーの意思決定や課題解決に応えます。
  • ✓ 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

66/100 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 →
diamond.jp
32
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 0/100 — Poor
Structured Elements 0 elements (0 lists, 0 rows, 0 headers)
Total Words403
Raw Density0.0%
💡Low structure score (0/100). Your content appears as a wall of text with few structured HTML elements. You have 0 list items, 0 table rows, 0 table headers. Convert features into <ul> lists and data into <table> elements to help AI models extract structured information.

🏷️ 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

44
AI Extractability
Medium
Crawl Cost
None
Blocklist Risk
Extractability44/100 — AI models can partially 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

18%
🗑️ 82%
Useful Content (38.1 KB)Bloat (163.9 KB)
Token Bloat Ratio5.3× — Normal

Multimodal Readiness

Visual Context90% Optimized for Vision
Image Alt Coverage83 / 92 images have alt text

TDM Rights

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

🔥 Structural Entropy Check Research

0 Entropy
Poor Token Bloat: High
Noise Ratio: 81.1% · SNR: 0.23 · Signal: 9746 / Noise: 41954 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

FrameworkNext.js
AI-Readiness Score70/100
Server
CDN
HTTP Status200
Load Time3425 ms
Raw HTML Size202.0 KB
Visible Text Size38.1 KB

Performance & Speed

34/100 20 % of Global Score 🟢 High Confidence

⏱️ Time to First Byte

3425 ms
Slow — bots may time out or deprioritise

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

📦 Page Weight

1089
DOM nodes
202 KB
HTML payload
Moderate weight — acceptable for most scenarios

🗄️ Cache & CDN

  • ✓ Cache-Control header → max-age=0, private, must-revalidate
  • ✗ CDN cache status
  • ✗ CDN detected

🔬 Tracker Tax

1
tracker scripts
1
third-party domains
0.0%
token overhead
Minimal tracker load — clean signal for bots
doubleclick.net
📐 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

73/100 15 % of Global Score 🟢 High Confidence

🗺️ Sitemap & Robots

  • ✗ Sitemap declared in robots.txt
  • ✓ Googlebot allowed
  • ✓ GPTBot allowed
  • ✓ ClaudeBot allowed

🔗 Linking

280
internal links
17
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 32/100. Reach 80+ to unlock the green "AI-Verified" badge. Fix the issues below to improve your score.

AI-Verified badge for diamond.jp
Pending Audit — score below 80 threshold
<a href="https://seodiff.io/radar/domains/diamond.jp" rel="noopener"><img src="https://seodiff.io/api/v1/badge?domain=diamond.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 1010 pages · Deep-10

Homepage ACRI
32
Single-page score
+16
Subpages outperform homepage
Δ delta
Site-Wide ACRI
48
Avg across 1010 pages · Range 0–60
Total Words
112231
Avg Bloat
313.0×
Page Type ACRI Token Bloat Words Status
https://diamond.jp/articles/-/383928
あなたの違和感は正しい。「会議が盛り上がらない」の正体…雑談で埋める前に見るべきこと | 組織の違和感 結局、リーダーは何を変えればいいのか? | ダイヤモンド・オンライン
blog 60 112.3× 261
https://diamond.jp/articles/-/384303
仕事ができる人がこっそりやっている、AIで「仕事の質を高める」すごい使い方・ベスト1 | AIを使って考えるための全技術 | ダイヤモンド・オンライン
blog 60 80.4× 382
https://diamond.jp/articles/-/384313
スティーブ・ジョブズが「IBMやマイクロソフトにもなれたのに…」と絶賛した「幻の大発明」とは? | 1兆ドル思考 世界一流の成功をもたらす9原則 | ダイヤモンド・オンライン
blog 60 125.1× 229
https://diamond.jp/articles/-/384156
“優秀なのに部下を潰す上司”が口にしがちな「口癖・ワースト1」 | なぜ、あなたのチームは疲れているのか? | ダイヤモンド・オンライン
blog 60 144.5× 212
https://diamond.jp/articles/-/383377
なぜ、健康食品の広告には、体験談が多いのか? | 客単価アップ大事典 | ダイヤモンド・オンライン
blog 60 139.1× 208
https://diamond.jp/articles/-/384045
【くびれづくりのプロが伝授】がんばっても「くびれができない人」は見落としがち。やってほしい3ステップ | くびれヨガ | ダイヤモンド・オンライン
blog 60 114.5× 260
https://diamond.jp/articles/-/383736
「生産性が上がらない」本当の理由。問題は現場の効率ではない | 戦略のデザイン | ダイヤモンド・オンライン
blog 60 134.5× 217
https://diamond.jp/articles/-/381141
想像するだけで不幸になる…ショーペンハウアーが語る「人間だけが持つ呪い」 | 注目の1冊 | ダイヤモンド・オンライン
blog 60 122.2× 237
https://diamond.jp/articles/-/383574
【くびれづくりのプロが伝授】くびれができにくい人に不足しがちな1つの習慣 | くびれヨガ | ダイヤモンド・オンライン
blog 60 119.3× 246
https://diamond.jp/articles/-/383001
【誰も絶対に見ることができない】超安全な「量子暗号」は実用化の段階に来ていることを知っていましたか? | 教養としての量子コンピュータ | ダイヤモンド・オンライン
blog 60 142.2× 202
https://diamond.jp/articles/-/383154
「言わなくてもわかるでしょ」はマネジメントの怠慢【あなたの違和感は正しい】 | 組織の違和感 結局、リーダーは何を変えればいいのか? | ダイヤモンド・オンライン
blog 60 115.7× 248
https://diamond.jp/articles/-/382997
【あなたも誤解していませんか?】量子コンピュータとスーパーコンピュータは全く別のものだった | 教養としての量子コンピュータ | ダイヤモンド・オンライン
blog 60 131.7× 221
https://diamond.jp/articles/-/384004
チームをバラバラにするリーダーがやっている「間違った初手」 | 戦略のデザイン | ダイヤモンド・オンライン
blog 60 137.2× 212
https://diamond.jp/articles/-/382538
部下が「明らかに間違った資料」を作成してきたら、仕事ができる人はどう声をかける? | 仕事ができる人の頭のなか | ダイヤモンド・オンライン
blog 60 125.3× 230
https://diamond.jp/articles/-/383822
職場で「この人、合わないなぁ…」と思ったとき、仕事ができる人はどうする?【書籍オンライン編集部セレクション】 | 仕事ができる人の当たり前 | ダイヤモンド・オンライン
blog 60 116.8× 253
https://diamond.jp/articles/-/383897
【すしを食べるとき】普通の人は「ネタの良さ」で選ぶ。では、美食家は何を重視している? | 美食の教養 | ダイヤモンド・オンライン
blog 60 98.4× 299
https://diamond.jp/articles/-/382553
「3ヵ月で本社に戻す」と言われて3年半……家電量販店で働き続けた新卒が、広告代理店社長になれたワケ | スタートアップ芸人 | ダイヤモンド・オンライン
blog 60 116.2× 259
https://diamond.jp/articles/-/383379
なぜ「売上の一部を寄付します」と書いた自動販売機は売上が良いのか? | 客単価アップ大事典 | ダイヤモンド・オンライン
blog 60 138.8× 209
https://diamond.jp/articles/-/383927
【一生使える】「指示待ち状態」がなくなる部下への伝え方3ステップ | 組織の違和感 結局、リーダーは何を変えればいいのか? | ダイヤモンド・オンライン
blog 60 114.1× 256
https://diamond.jp/articles/-/383378
なぜ、アウトドア用品店では、テントや椅子を組み立てて展示しているのか? | 客単価アップ大事典 | ダイヤモンド・オンライン
blog 60 143.3× 203
Showing 20 of 100 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
/articles/ 500 50 0% 288.1× High JS Bloat
🔗
Outbound External Citations
0 unique external domains cited across 1010 pages
item.diamond.co.jp ×1000
dhbr.diamond.jp ×1000
x.com ×1000
zai.diamond.jp ×1000
facebook.com ×1000
promo.diamond.jp ×1000
diamond.co.jp ×1000
adinfo.diamond.jp ×1000
🔄 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/diamond.jp

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

🔗 Similar infrastructure Sites

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

Domain ACRI AI Score Tech Stack Token Bloat Schema
diamond.jp (this site) 32 62 Next.js 5.3× 0
lefty.io 57 76 Next.js 16.9× 2 Compare →
lolaslashes.co.uk 57 76 Next.js 45.2× 3 Compare →
open.163.com 57 74 Custom / Proprietary 4.8× 0 Compare →
bytevirt.com 57 80 Custom / Proprietary 4.0× 0 Compare →
malommozi.hu 57 74 Custom / Proprietary 3.9× 0 Compare →
Compare All 5 Similar Sites →

📊 Semantic Share of Voice

How often would an AI cite diamond.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…

🎭

Bait & Switch Delta

A 15 PAGES

Compares 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.

44
Homepage ACRI
46
Inner Avg ACRI
-2
ACRI Delta
40%
Homepage Ghost
24%
Inner Avg Ghost
0
Drift Score [?]
Worst Inner Pages
44 40% blog https://diamond.jp/articles/-/382479
44 40% blog https://diamond.jp/articles/-/382419
44 40% pricing https://diamond.jp/articles/-/384083
🛡️

E-E-A-T Trust Signals

F 10/100

Trust indicators extracted from surface pages. These signals help AI systems verify your site's Experience, Expertise, Authoritativeness, and Trustworthiness.

Physical Address
Phone Number
Email Contact
About Page
Contact Page
Privacy Policy
Terms of Service
Named Leadership
Named leadership: CAR and DRIVER, 松村真宏, たーちゃん
🔗

Citation Profile

19 DOMAINS

Outbound citation patterns across surface-crawled pages. Sites that cite diverse, authoritative sources signal higher E-E-A-T to AI systems.

167
Total Links
19
Unique Domains
11.1
Avg/Page
11%
Diversity
diamond.co.jp promo.diamond.jp item.diamond.co.jp diamond-fudosan.jp facebook.com dhbr.diamond.jp x.com adinfo.diamond.jp zai.diamond.jp kinokuniya.co.jp
🏘️ Outbound Neighborhood Trust Avg Trust: 25.4

AI trust scores for the domains diamond.jp links to. Citing high-trust sources lifts your own credibility signal.

🩹

Remediation Patches

COPY-PASTE

Auto-generated code fixes tailored to diamond.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": "Diamond",
  "url": "https://diamond.jp",
  "logo": "https://dol.ismcdn.jp/common/images/favicon.ico",
  "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": "Diamond",
  "url": "https://diamond.jp",
  "potentialAction": {
    "@type": "SearchAction",
    "target": "https://diamond.jp/search?q={search_term_string}",
    "query-input": "required name=search_term_string"
  }
}
</script>
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 Diamond?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Add your answer here — describe what Diamond does in 1-2 sentences."
      }
    },
    {
      "@type": "Question",
      "name": "How does Diamond work?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Explain the key features and how users interact with Diamond."
      }
    }
  ]
}
</script>
📈

Projected Impact

ROI EST.

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

Current Score
62
Projected Score
78
Improvement
+16 pts
Add Organization schema +6 pts
Add WebSite schema +4 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
🔍 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 →