cang.com 53 D
🛡️ SEO 35 🤖 GEO 68 ⚡ Perf 41 🏗️ Arch 59

cang.com — Global SEODiff Score 53/100

cang.com
📊

cang.com shows strong AI visibility with an ACRI of 82/100, outperforming 96% of indexed domains. Compared to other infrastructure sites (avg score: 57), cang.com performs above the benchmark, suggesting strong competitive positioning in AI search. Server-side rendering keeps the ghost ratio near zero, giving AI systems direct access to all visible content. A 50.0× token bloat ratio means crawlers must process significantly more tokens to reach the actual content — a drag on extraction efficiency. No structured data was detected, which means AI systems must infer all entities and relationships from raw HTML alone. The site maintains an open-door policy for AI crawlers — GPTBot, ClaudeBot, and other major agents are all allowed.

53
D — Global SEODiff Score
Comprehensive search visibility assessment
Below average — Traditional SEO (35) has the most room for improvement.
🎯 Top Fix: Reduce token bloat (56×) → +5–10 pts
🔬 Automated SEODiff Assessment · Snapshot: Mar 18, 2026 · 📋 API
📈 ACRI Trend 5 snapshots
Feb 23 Mar 18
🔔 Recent AI Indexing Activity
No recent changes detected by adaptive crawler.
Does your site score higher than cang.com?
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)35 × 0.25 = 8.8
🤖 AI Readiness / GEO (40% weight)68 × 0.40 = 27.2
⚡ Performance (20% weight)41 × 0.20 = 8.2
🏗️ Architecture & Trust (15% weight)59 × 0.15 = 8.8
Weighted sum = 8.8 + 27.2 + 8.2 + 8.8
Global SEODiff Score = 53 (D)
📊 ACRI Sub-Scores (AI Readiness Detail)
100
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 28%
Rank #283013
-24 pts
Gap
AI (ACRI)
Top 4%
Score 82/100

cang.com ranks much higher on Google (Tranco Top 28%) than in AI search (Top 4%). This is the 'Visibility Gap' pattern — implementing the recommendations above can help close the AI gap. ACRI measures technical crawler readiness. Read the methodology →

Why cang.com ranks here

Tech stackNext.js
RenderingSSR
Schema coverage0 blocks
Token bloat50×+

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

35/100 25 % of Global Score 🟢 High Confidence

📝 Title Tag

108 chars
Too long

Optimal range: 30–60 characters for SERP display.

📋 Meta Description

339 chars
Too long

Optimal range: 120–160 characters for snippet control.

🔤 Heading Hierarchy

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

🔍 Indexability

  • ✗ Canonical tag present
  • ✓ No noindex directive
  • ✓ Meta viewport set
  • ✓ HTML lang attribute → zh_CN
  • ➖ Hreflang tags — N/A (single language site)
  • ✓ Googlebot allowed by robots.txt

🌐 Social / OpenGraph

  • ✗ og:title
  • ✗ og:description
  • ✗ og:image
  • ✗ 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

68/100 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 →
cang.com
64
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 397 elements (397 lists, 0 rows, 0 headers)
Total Words1152
Raw Density34.5%

🏷️ 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

57
AI Extractability
High
Crawl Cost
None
Blocklist Risk
Extractability57/100 — AI models can partially extract answers from this page
Crawl CostHigh (100/100) — expensive for AI crawlers to process
Blocklist RiskNone — 0 of 5 AI crawlers blocked

Token Bloat Research

1%
🗑️ 99%
Useful Content (14.7 KB)Bloat (819.2 KB)
Token Bloat Ratio50×+ — Bloated

Multimodal Readiness

Visual Context37% Optimized for Vision
Image Alt Coverage16 / 43 images have alt text

TDM Rights

TDM-Reservation HeaderNot set
X-Robots-Tag: noaiNot set
💡Your HTML is 834.0 KB, but only 14.7 KB is text. 1% useful / 99% bloat. AI crawlers have limited context windows (e.g. 128k tokens). This level of bloat (50×+) risks context-window truncation by ChatGPT, Claude, and Gemini. Reduce inline scripts, CSS, hydration payloads, and tracking code.
💡Only 37% of images have alt text. Add descriptive alt attributes so multimodal AI (ChatGPT Vision) can understand your images.

🔥 Structural Entropy Check Research

0 Entropy
Poor Token Bloat: High
Noise Ratio: 98.2% · SNR: 0.02 · Signal: 3775 / Noise: 209724 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 cang.com 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
华夏收藏网 is a diversified collection website offering a one-stop solution for online trading, authentication, and auctioning of antique art pieces.
Target Audience
Collectors, antique dealers, art enthusiasts, and individuals seeking to buy or sell antique art pieces.
Pricing Model
Auction-based, with a range of items priced from low to extremely high (e.g., $3800 to $280000). Zero-yuan starting bids are common, and special offers like ‘80% discount’ are frequently used.
🔗 Integration Partners
艺动拍卖华宝阁珍藏拍卖诚信文玩拍卖
🏆 Competitive Moat
Extensive catalog of antique art pieces, a large user base, and a system for zero-yuan starting bids create a competitive advantage.
📊 Content Depth
6/10
🔄 Programmatic SEO Signals
Template-generated pages for auctions and featured items‘猜你喜欢’ section with product recommendations‘专场拍卖’ sections for different categories
⚡ Key Pain Points
• Lack of structured FAQ schema
• Thin landing pages for features
• Potential for fraud and counterfeit items (addressed with ‘鉴定贴’ and platform authentication)
Analyzed by SEODiff AI · 2026-03-13

🔧 Tech Stack

FrameworkNext.js
AI-Readiness Score70/100
ServerTengine
CDN
HTTP Status200
Load Time845 ms
Raw HTML Size834.0 KB
Visible Text Size14.7 KB

Performance & Speed

41/100 20 % of Global Score 🟢 High Confidence

⏱️ Time to First Byte

845 ms
Slow — bots may time out or deprioritise

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

📦 Page Weight

3318
DOM nodes
834 KB
HTML payload
Heavy page — consider reducing DOM complexity

🗄️ 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

59/100 15 % of Global Score 🟡 Medium Confidence

🗺️ Sitemap & Robots

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

🔗 Linking

793
internal links
6
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 → zh_CN
  • ✓ 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 64/100. Reach 80+ to unlock the green "AI-Verified" badge. Fix the issues below to improve your score.

AI-Verified badge for cang.com
Pending Audit — score below 80 threshold
<a href="https://seodiff.io/radar/domains/cang.com" rel="noopener"><img src="https://seodiff.io/api/v1/badge?domain=cang.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 9 pages · Deep-10

Homepage ACRI
64
Single-page score
-15
Moderate hidden bloat
Δ delta
Site-Wide ACRI
49
Avg across 9 pages · Range 49–49
🔍
Hidden Bloat Detected

Homepage scores 64, but internal pages average only 49 — a -15-point gap. Blogs, docs, and legacy content are dragging down AI readability site-wide.

Total Words
5178
Avg Bloat
294.6×
Page Type ACRI Token Bloat Words Status
https://cang.com/pricing
华夏收藏网是一家从事古玩收藏艺术品的在线交易鉴定拍卖一体的多元化收藏网站
pricing 49 286.1× 591
https://cang.com/about
华夏收藏网是一家从事古玩收藏艺术品的在线交易鉴定拍卖一体的多元化收藏网站
about 49 288.8× 583
https://cang.com/features
华夏收藏网是一家从事古玩收藏艺术品的在线交易鉴定拍卖一体的多元化收藏网站
product 49 291.7× 574
https://cang.com/products
华夏收藏网是一家从事古玩收藏艺术品的在线交易鉴定拍卖一体的多元化收藏网站
product 49 291.7× 574
https://cang.com/docs
华夏收藏网是一家从事古玩收藏艺术品的在线交易鉴定拍卖一体的多元化收藏网站
docs 49 288.2× 580
https://cang.com/blog
华夏收藏网是一家从事古玩收藏艺术品的在线交易鉴定拍卖一体的多元化收藏网站
blog 49 301.2× 569
https://cang.com/integrations
华夏收藏网是一家从事古玩收藏艺术品的在线交易鉴定拍卖一体的多元化收藏网站
integrations 49 301.2× 569
https://cang.com/faq
华夏收藏网是一家从事古玩收藏艺术品的在线交易鉴定拍卖一体的多元化收藏网站
support 49 301.2× 569
https://cang.com/contact
华夏收藏网是一家从事古玩收藏艺术品的在线交易鉴定拍卖一体的多元化收藏网站
support 49 301.2× 569
📂
Health by Sub-Directory
Average ACRI and top issues aggregated by URL path prefix
Path Pages Avg ACRI Ghost % Bloat Top Issue
/integrations/ 1 49 1% 301.2× Bot Blocked
/features/ 1 49 1% 291.7× Bot Blocked
/products/ 1 49 1% 291.7× Bot Blocked
/contact/ 1 49 1% 301.2× Bot Blocked
/docs/ 1 49 1% 288.2× Bot Blocked
/about/ 1 49 1% 288.8× Bot Blocked
/pricing/ 1 49 1% 286.1× Bot Blocked
/blog/ 1 49 1% 301.2× Bot Blocked
/faq/ 1 49 1% 301.2× Bot Blocked
🔗
Outbound External Citations
0 unique external domains cited across 9 pages
xinyong.360.cn ×9
m.cang.com ×9
beian.miit.gov.cn ×9
news.cang.com ×9
weibo.com ×9
jbts.mct.gov.cn ×9
12377.cn ×9
beian.gov.cn ×9
🔄 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/cang.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 cang.com. Compare side-by-side.

Domain ACRI AI Score Tech Stack Token Bloat Schema
cang.com (this site) 64 82 Next.js 56.5× 0
profitserver.net 86 90 WordPress 3.8× 2 Compare →
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profitserver.ru 86 90 WordPress 3.8× 2 Compare →
driphydration.com 86 95 WordPress 1.9× 2 Compare →
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📊 Semantic Share of Voice

How often would an AI cite cang.com 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 cang.com. 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": "Cang",
  "url": "https://cang.com",
  "logo": "https://cang.com/static/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": "Cang",
  "url": "https://cang.com",
  "potentialAction": {
    "@type": "SearchAction",
    "target": "https://cang.com/search?q={search_term_string}",
    "query-input": "required name=search_term_string"
  }
}
</script>
Reduce Token Bloat
Medium Impact ⏱ 1–2 hrs
Only 1% 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 Cang?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Add your answer here — describe what Cang does in 1-2 sentences."
      }
    },
    {
      "@type": "Question",
      "name": "How does Cang work?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Explain the key features and how users interact with Cang."
      }
    }
  ]
}
</script>
📈

Projected Impact

ROI EST.

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

Current Score
82
Projected Score
100
Improvement
+18 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.
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