simthanglong.vn 63 C
🛡️ SEO 39 🤖 GEO 76 ⚡ Perf 53 🏗️ Arch 82

simthanglong.vn — Global SEODiff Score 63/100

simthanglong.vn
📊

simthanglong.vn shows strong AI visibility with an ACRI of 74/100, outperforming 78% of indexed domains. The low ghost ratio (5%) confirms that what crawlers see matches what users see — a hallmark of strong SSR implementation. The token bloat ratio sits at a lean 4.4×, meaning the ratio of code to visible content is efficient — crawlers spend their token budget on actual information. Structured data coverage is solid at 2 blocks, covering core entities — expanding to include FAQ or Breadcrumb schemas could strengthen the profile further. All major AI bot user-agents (GPTBot, ClaudeBot, CCBot, Google-Extended) are permitted by robots.txt, ensuring broad AI crawler access.

63
C — Global SEODiff Score
Comprehensive search visibility assessment
Strong foundations, but Traditional SEO (39) is your bottleneck.
🎯 Top Fix: Fix title tag length → +3 pts
🔬 Automated SEODiff Assessment · Snapshot: Mar 2, 2026 · 📋 API
📈 ACRI Trend 4 snapshots
Feb 23 Mar 2
🔔 Recent AI Indexing Activity
No recent changes detected by adaptive crawler.
Does your site score higher than simthanglong.vn?
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)39 × 0.25 = 9.8
🤖 AI Readiness / GEO (40% weight)76 × 0.40 = 30.4
⚡ Performance (20% weight)53 × 0.20 = 10.6
🏗️ Architecture & Trust (15% weight)82 × 0.15 = 12.3
Weighted sum = 9.8 + 30.4 + 10.6 + 12.3
Global SEODiff Score = 63 (C)
📊 ACRI Sub-Scores (AI Readiness Detail)
100
Bot Access
avg 92
99
Rendering
avg 93
39
Structure
avg 36
44
Schema
avg 9
50
Tech Stack
avg 63
🔀
Visibility Delta: Google vs AI
Google (Tranco)
Top 8%
Rank #79739
+15 pts
Gap
AI (ACRI)
Top 22%
Score 74/100

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

Why simthanglong.vn ranks here

Tech stackCustom / Proprietary
Industry
RenderingSSR
Schema coverage2 blocks
Token bloat4.4×

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

39/100 25 % of Global Score 🟢 High Confidence

📝 Title Tag

110 chars
Too long

Optimal range: 30–60 characters for SERP display.

📋 Meta Description

234 chars
Too long

Optimal range: 120–160 characters for snippet control.

🔤 Heading Hierarchy

  • ✓ Exactly 1 <h1> tag — found 1
  • ✓ Has <h2> headings — found 10
  • ✗ <h2> not before <h1>

🔍 Indexability

  • ✓ Canonical tag present → https://simthanglong.vn
  • ✓ No noindex directive
  • ✓ Meta viewport set
  • ✓ HTML lang attribute → vi
  • ✗ Hreflang tags
  • ✓ Googlebot allowed by robots.txt

🌐 Social / OpenGraph

  • ✓ og:title — Kho +45tr SIM số đẹp uy tín từ 【150k】 tại Sim Thăng Long, cập nhật bảng số mới nhất
  • ✓ og:description — Kho SIM 45tr số đẹp uy tín tại Sim Thăng Long mới update 2025 - Miễn Phí Đăng ký chính chủ - Giá rẻ chỉ từ 【150k】- Miễn Phí Giao SIM Toàn Quốc ✴️ Mua SIM số đẹp hãy chọn SimThangLong.vn
  • ✓ 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 Confidence

This pillar aggregates citation share, hallucination risk, bot access, schema health, and content extractability. The individual diagnostic sections below contribute to this score.

🚨

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 39/100 — Low
Structured Elements 177 elements (177 lists, 0 rows, 0 headers)
Total Words3794
Raw Density4.7%
💡Low structure score (39/100). Your content appears as a wall of text with few structured HTML elements. You have 177 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 ✅ Present
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
💡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.
💡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

67
AI Extractability
Low
Crawl Cost
None
Blocklist Risk
Extractability67/100 — AI models can partially 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

22%
🗑️ 78%
Useful Content (22.5 KB)Bloat (75.4 KB)
Token Bloat Ratio4.4× — Lean

Multimodal Readiness

Visual Context94% Optimized for Vision
Image Alt Coverage15 / 16 images have alt text

TDM Rights

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

🔥 Structural Entropy Check Research

15 Entropy
Poor Token Bloat: High
Noise Ratio: 77.0% · SNR: 0.30 · Signal: 5750 / Noise: 19304 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 simthanglong.vn 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
This platform provides a marketplace for purchasing SIM cards from various Vietnamese mobile operators, offering a wide selection of SIMs
Target Audience
Individuals seeking SIM cards, primarily Vietnamese mobile users and expats, looking for specific numbers, lengths, or price ranges.
Pricing Model
Variable; SIM prices range from ₫340,000 to ₫500,000,000+ depending on the type and length of the SIM.
🏆 Competitive Moat
Extensive SIM card inventory and a user-friendly interface for searching and filtering SIMs based on various criteria, combined with a strong network of partnerships with Vietnamese mobile operators.
📊 Content Depth
6/10
🔄 Programmatic SEO Signals
Sim search terms (e.g., 'sim 091', 'sim 088')SIM length filters (e.g., 'sim tứ quý', 'sim ngũ quý')SIM type filters (e.g., 'sim Lộc Phát', 'sim Thần Tài')
⚡ Key Pain Points
• Lack of structured FAQ schema
• Thin landing pages for features
• Limited SEO optimization for specific SIM searches
Analyzed by SEODiff AI · 2026-03-04

🔧 Tech Stack

AI-Readiness Score50/100
Servernginx/1.26.3
CDN
HTTP Status200
Load Time1053 ms
Raw HTML Size97.9 KB
Visible Text Size22.5 KB

Performance & Speed

53/100 20 % of Global Score 🟢 High Confidence

⏱️ Time to First Byte

1053 ms
Slow — bots may time out or deprioritise

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

📦 Page Weight

1464
DOM nodes
98 KB
HTML payload
Lean page — fast for bots and users

🗄️ Cache & CDN

  • ✓ Cache-Control header → no-cache, private
  • ✗ 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

82/100 15 % of Global Score 🟢 High Confidence

🗺️ Sitemap & Robots

  • ✓ Sitemap declared in robots.txt → https://simthanglong.vn/sitemap.xml
  • ✓ Googlebot allowed
  • ✓ GPTBot allowed
  • ✓ ClaudeBot allowed

🔗 Linking

351
internal links
9
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 → vi
  • ✓ 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 58/100. Reach 80+ to unlock the green "AI-Verified" badge. Fix the issues below to improve your score.

AI-Verified badge for simthanglong.vn
Pending Audit — score below 80 threshold
<a href="https://seodiff.io/radar/domains/simthanglong.vn" rel="noopener"><img src="https://seodiff.io/api/v1/badge?domain=simthanglong.vn" 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 48 pages · Deep-10

Homepage ACRI
58
Single-page score
+22
Subpages outperform homepage
Δ delta
Site-Wide ACRI
80
Avg across 48 pages · Range 75–90
Topical Cohesion
6%
Topical Drift
TF-IDF cosine similarity
Total Words
87509
Avg Bloat
9.0×
Page Type ACRI Token Bloat Words Status
https://simthanglong.vn/sim-so-dep-vinaphone
Kho 1.5 triệu SIM Số Đẹp Vina chỉ từ【340k】chọn SIM đẹp, ấn tượng
other 90 4.5× 5087
https://simthanglong.vn/dinh-gia-sim-ai
Định giá SIM AI - Phần mềm Thẩm Định SĐT chính xác
other 90 4.7× 1967
https://simthanglong.vn/sim-ong-dia-mobifone
+35.OOO Sim Ông Địa Mobifone - Sim đuôi 38, 78 từ【35OK】
pricing 85 8.1× 2050 💰 Pricing
https://simthanglong.vn/tim-sim/78.html
Sim Ông Địa 78 - Kho sim "Ông Địa Lớn" giá chỉ từ 250K
pricing 85 8.2× 2067 💰 Pricing
https://simthanglong.vn/sim-than-tai-vinaphone
+49.5OO Sim Thần Tài Vinaphone - Sim đầu 09, 08 từ【29Ok】
pricing 85 8.2× 2051 💰 Pricing
https://simthanglong.vn/sim-than-tai-viettel
Sim Thần Tài Viettel - Sim Rước Tài Lộc chỉ từ【199K】
pricing 85 8.4× 1964 💰 Pricing
https://simthanglong.vn/sim-lap-3
+15.OOO Sim Lặp 3 số đẹp Mobi, Vina, Viettel,.. từ【7.990k】
pricing 85 6.3× 2899 💰 Pricing
https://simthanglong.vn/sim-loc-phat-mobifone
+75.OOO Sim Lộc Phát Mobifone số đẹp giá chỉ từ【299k】
pricing 85 8.4× 1965 💰 Pricing
https://simthanglong.vn/sim-tien-doi
Kho +59O Sim Tiến Đôi - Sim Tiến 10 đầu 09, 08 từ【2790k】
pricing 85 6.3× 2988 💰 Pricing
https://simthanglong.vn/sim-loc-phat-vinaphone
+87.OOO Sim Lộc Phát Vinaphone - Sim đầu 09, 08 từ【29Ok】
pricing 85 8.4× 1981 💰 Pricing
https://simthanglong.vn/sim-tien-4
+4.5OO Sim Tiến 4 - Sim Tiến đơn 4 chỉ từ【479k】
pricing 85 6.3× 2889 💰 Pricing
https://simthanglong.vn/sim-nam-sinh-1995.html
❪4OOO❫ sim năm sinh 1995 - Chọn sim năm sinh 1995 chỉ 599K
pricing 85 9.0× 1984 💰 Pricing
https://simthanglong.vn/sim-nam-sinh-2017.html
Sim Năm Sinh 2017, Kho sim đuôi năm sinh 2017 chỉ 199K
pricing 85 8.7× 1886 💰 Pricing
https://simthanglong.vn/sim-nam-sinh-2018.html
#1 Kho sim đuôi Năm sinh 2018 lớn nhất Việt Nam
pricing 85 8.7× 1898 💰 Pricing
https://simthanglong.vn/sim-nam-sinh-2019.html
1 triệu SIM NĂM SINH 2019 giá rẻ nhất [450K]
pricing 85 8.7× 1894 💰 Pricing
https://simthanglong.vn/sim-loc-phat-viettel
Sim Lộc Phát Viettel - Kho Sim Số Đẹp giá chỉ từ【29OK】
pricing 85 8.1× 2041 💰 Pricing
https://simthanglong.vn/sim-lap-4
+13.OOO Sim Lặp 4 ✴️ Sim Lặp Đệ nhất dễ nhớ từ【174tr】
pricing 85 6.6× 2730 💰 Pricing
https://simthanglong.vn/sim-ong-dia-vinaphone
+26.OOO Sim Ông Địa Vinaphone - Sim đuôi 78, 38 giá rẻ【25Ok】
pricing 85 8.0× 2082 💰 Pricing
https://simthanglong.vn/sim-than-tai-mobifone
Sim Thần Tài Mobifone - Kho Sim 39, 79 giá chỉ từ【29OK】
pricing 85 8.4× 1978 💰 Pricing
https://simthanglong.vn/sim-ganh-dao-mobifone
+37.OOO Sim Gánh Đảo Mobifone đầu O9, O8 chỉ từ【35Ok】
pricing 85 8.3× 1989 💰 Pricing
Showing 20 of 48 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
/tim-sim/ 19 76 0% 11.4× High JS Bloat
/sim-tien-doi/ 1 85 0% 6.3× High JS Bloat
/sim-ong-dia-vinaphone/ 1 85 0% 8.0× High JS Bloat
/sim-hop-tuoi-2000/ 1 82 0% 4.8× Healthy
/sim-than-tai-viettel/ 1 85 0% 8.4× High JS Bloat
/sim-loc-phat-mobifone/ 1 85 0% 8.4× High JS Bloat
/sim-hop-tuoi-1999/ 1 82 0% 4.7× Healthy
/sim-tam-hoa-777-giua/ 1 75 0% 10.9× High JS Bloat
/sim-so-dep-vinaphone/ 1 90 0% 4.5× Healthy
/sim-hop-tuoi-1997/ 1 82 0% 4.5× Healthy
/sim-nam-sinh-2018.html/ 1 85 0% 8.7× High JS Bloat
/sim-ong-dia-mobifone/ 1 85 0% 8.1× High JS Bloat
/sim-nam-sinh-2017.html/ 1 85 0% 8.7× High JS Bloat
/sim-than-tai-vinaphone/ 1 85 0% 8.2× High JS Bloat
/sim-tien-4/ 1 85 0% 6.3× High JS Bloat
🔗
Outbound External Citations
0 unique external domains cited across 48 pages
wipopublish.ipvietnam.gov.vn ×48
instagram.com ×48
youtube.com ×48
zalo.me ×48
x.com ×48
online.gov.vn ×48
facebook.com ×48
dmca.com ×48
🔄 Re-Crawl & Update 📡 Track this Domain

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🔌 API Access

Pull this data programmatically. All sub-page metrics are available via our public API.

curl https://seodiff.io/api/v1/deep10/domain/simthanglong.vn

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

🔗 Similar Sites

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

Domain ACRI AI Score Tech Stack Token Bloat Schema
simthanglong.vn (this site) 58 74 Custom / Proprietary 4.4× 2
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barratthomes.co.uk 68 79 Custom / Proprietary 5.9× 3 Compare →
mibosport.com 68 77 Custom / Proprietary 5.7× 0 Compare →
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📊 Semantic Share of Voice

How often would an AI cite simthanglong.vn 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 simthanglong.vn. 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": "Simthanglong",
  "url": "https://simthanglong.vn",
  "logo": "https://simthanglong.vn/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": "Simthanglong",
  "url": "https://simthanglong.vn",
  "potentialAction": {
    "@type": "SearchAction",
    "target": "https://simthanglong.vn/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 Simthanglong?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Add your answer here — describe what Simthanglong does in 1-2 sentences."
      }
    },
    {
      "@type": "Question",
      "name": "How does Simthanglong work?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Explain the key features and how users interact with Simthanglong."
      }
    }
  ]
}
</script>
📈

Projected Impact

ROI EST.

If you apply the patches above, here's the estimated improvement for simthanglong.vn:

Current Score
74
Projected Score
90
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