msdmanuals.com 79 B
🛡️ SEO 75 🤖 GEO 81 ⚡ Perf 74 🏗️ Arch 88

msdmanuals.com — Global SEODiff Score 79/100

msdmanuals.com
📊

msdmanuals.com achieves a 76/100 on the AI-Crawler Reality Index, reflecting above-average readiness for AI-driven discovery. Compared to other infrastructure sites (avg score: 57), msdmanuals.com performs above the benchmark, 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. A 7.4× bloat ratio is typical for sites in this tech tier — not wasteful, but streamlining could further boost extractability. The site includes 3 schema blocks, providing adequate structured data for basic entity recognition. Robots.txt grants unrestricted access to the key AI user-agents, which is the strongest starting position for AI visibility.

79
B — Global SEODiff Score
Comprehensive search visibility assessment
Strong foundations, but Performance (74) is your bottleneck.
🎯 Top Fix: Monitor weekly to catch regressions early
🔬 Automated SEODiff Assessment · Snapshot: Mar 17, 2026 · 📋 API
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🧮 Score Transparency — How is this calculated?
🛡️ Traditional SEO (25% weight)75 × 0.25 = 18.8
🤖 AI Readiness / GEO (40% weight)81 × 0.40 = 32.4
⚡ Performance (20% weight)74 × 0.20 = 14.8
🏗️ Architecture & Trust (15% weight)88 × 0.15 = 13.2
Weighted sum = 18.8 + 32.4 + 14.8 + 13.2
Global SEODiff Score = 79 (B)
📊 ACRI Sub-Scores (AI Readiness Detail)
100
Bot Access
avg 92
99
Rendering
avg 93
39
Structure
avg 35
46
Schema
avg 9
70
Tech Stack
avg 63
🔀
Visibility Delta: Google vs AI
Google (Tranco)
Top 0.7%
Rank #6634
+17 pts
Gap
AI (ACRI)
Top 17%
Score 76/100

msdmanuals.com 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 msdmanuals.com ranks here

Tech stackNext.js
RenderingSSR
Schema coverage3 blocks
Token bloat7.4×

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

75/100 25 % of Global Score 🟢 High Confidence

📝 Title Tag

54 chars
Good length

Optimal range: 30–60 characters for SERP display.

📋 Meta Description

108 chars
Too short

Optimal range: 120–160 characters for snippet control.

🔤 Heading Hierarchy

  • ✓ Exactly 1 <h1> tag — found 1
  • ✓ Has <h2> headings — found 3
  • ✓ <h2> not before <h1>

🔍 Indexability

  • ✓ Canonical tag present → https://www.msdmanuals.com
  • ✓ No noindex directive
  • ✓ Meta viewport set
  • ✓ HTML lang attribute → en
  • ✅ Hreflang tags
  • ✓ Googlebot allowed by robots.txt

🌐 Social / OpenGraph

  • ✓ og:title — The Trusted Provider of Medical Information since 1899
  • ✗ og:description
  • ✓ 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

81/100 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 →
msdmanuals.com
60
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 39/100 — Low
Structured Elements 36 elements (36 lists, 0 rows, 0 headers)
Total Words770
Raw Density4.7%
💡Low structure score (39/100). Your content appears as a wall of text with few structured HTML elements. You have 36 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 ✅ Present
Product / Service Schema ⚠️ Not Found
Total Schema Blocks3 blocks

Schema Coverage Map

3/7 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.
💡FAQ schema missing. Adding FAQPage schema lets AI models directly extract Q&A pairs for Featured Snippets and chatbot answers.

📐 AI Efficiency Metrics Docs

61
AI Extractability
Medium
Crawl Cost
None
Blocklist Risk
Extractability61/100 — AI models can partially extract answers from this page
Crawl CostMedium (40/100) — moderate for AI crawlers to process
Blocklist RiskNone — 0 of 5 AI crawlers blocked

Token Bloat Research

13%
🗑️ 87%
Useful Content (16.2 KB)Bloat (103.8 KB)
Token Bloat Ratio7.4× — Normal

Multimodal Readiness

Visual Context70% Optimized for Vision
Image Alt Coverage16 / 23 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: 86.5% · SNR: 0.16 · Signal: 4136 / Noise: 26583 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 msdmanuals.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
The MSD Manuals provides a free, accessible, and non-commercial medical resource.
Target Audience
Healthcare professionals, patients, and general public seeking medical information.
Pricing Model
Free to access; supported by external organizations.
🏆 Competitive Moat
Comprehensive, authoritative medical knowledge base maintained by a dedicated editorial board.
📊 Content Depth
5/10
Analyzed by SEODiff AI · 2026-02-28

🔧 Tech Stack

FrameworkNext.js
AI-Readiness Score70/100
Server
CDN
HTTP Status200
Load Time521 ms
Raw HTML Size120.0 KB
Visible Text Size16.2 KB

Performance & Speed

74/100 20 % of Global Score 🟢 High Confidence

⏱️ Time to First Byte

521 ms
Acceptable — room for improvement

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

📦 Page Weight

344
DOM nodes
120 KB
HTML payload
Moderate weight — acceptable for most scenarios

🗄️ Cache & CDN

  • ✓ Cache-Control header → s-maxage=2592000, stale-while-revalidate
  • ✗ 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

88/100 15 % of Global Score 🟢 High Confidence

🗺️ Sitemap & Robots

  • ✓ Sitemap declared in robots.txt → https://www.msdmanuals.com/de/sitemap.xml
  • ✓ Googlebot allowed
  • ✓ GPTBot allowed
  • ✓ ClaudeBot allowed

🔗 Linking

12
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 → en
  • ✓ 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 60/100. Reach 80+ to unlock the green "AI-Verified" badge. Fix the issues below to improve your score.

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

Homepage ACRI
60
Single-page score
-25
Severe hidden bloat
Δ delta
Site-Wide ACRI
36
Avg across 1010 pages · Range 0–62
🔍
Hidden Bloat Detected

Homepage scores 60, but internal pages average only 36 — a -25-point gap. Blogs, docs, and legacy content are dragging down AI readability site-wide.

Topical Cohesion
8%
Topical Drift
TF-IDF cosine similarity
Total Words
86380
Avg Bloat
755.5×
RAG Fractures [?]
1
⚠️
1 RAG-Chunking Fracture Detected

Poorly formatted tables or pricing grids on 1 page will be split incorrectly during RAG chunking, causing AI models to hallucinate prices and features.

Page Type ACRI Token Bloat Words Status
https://www.msdmanuals.com/home/healthy-living
Healthy Living: Health & Wellness Information | MSD Manual Consumer Version
pricing 62 129.7× 642 💰 Pricing
https://www.msdmanuals.com/home/multimedia/image/replacing-a-heart-valve
Image:Replacing a Heart Valve-MSD Manual Consumer Version
other 52 81.3× 383
https://www.msdmanuals.com/home/multimedia/image/heart-failure-pumping-and-filling-problems
Image:Heart Failure: Pumping and Filling Problems-MSD Manual Consumer Version
other 52 133.5× 228
https://www.msdmanuals.com/home/multimedia/image/normal-circulation-in-a-fetus
Image:Normal Circulation in a Fetus-MSD Manual Consumer Version
other 52 146.2× 208
https://www.msdmanuals.com/home/multimedia/image/positioning-a-baby-to-breastfeed
Image:Positioning a Baby to Breastfeed-MSD Manual Consumer Version
meta 52 147.8× 204
https://www.msdmanuals.com/home/multimedia/image/rebuilding-a-breast
Image:Rebuilding a Breast-MSD Manual Consumer Version
pricing 52 98.4× 311 💰 Pricing
https://www.msdmanuals.com/home/multimedia/image/spina-bifida-a-defect-of-the-spine
Image:Spina Bifida: A Defect of the Spine-MSD Manual Consumer Version
other 52 145.4× 209
https://www.msdmanuals.com/home/multimedia/image/x-linked-recessive-disorders
Image:X-Linked Recessive Disorders-MSD Manual Consumer Version
ecommerce 52 143.9× 210
https://www.msdmanuals.com/home/multimedia/image/common-hand-injuries
Image:Common Hand Injuries-MSD Manual Consumer Version
other 52 136.0× 235
https://www.msdmanuals.com/home/multimedia/image/dermatomes
Image:Dermatomes-MSD Manual Consumer Version
other 52 147.1× 207
https://www.msdmanuals.com/home/multimedia/image/ecg-reading-the-waves
Image:ECG: Reading the Waves-MSD Manual Consumer Version
other 52 125.6× 242
https://www.msdmanuals.com/home/multimedia/image/how-atherosclerosis-develops
Image:How Atherosclerosis Develops-MSD Manual Consumer Version
other 52 137.4× 220
https://www.msdmanuals.com/home/multimedia/image/how-people-sense-flavors
Image:How People Sense Flavors-MSD Manual Consumer Version
other 52 77.1× 399
https://www.msdmanuals.com/home/multimedia/image/keeping-the-beat-artificial-pacemakers
Image:Keeping the Beat: Artificial Pacemakers-MSD Manual Consumer Version
pricing 52 112.4× 271 💰 Pricing
https://www.msdmanuals.com/home/multimedia/image/life-cycle-of-toxoplasma-gondii
Image:Life Cycle of Toxoplasma gondii-MSD Manual Consumer Version
pricing 52 99.3× 316 💰 Pricing
https://www.msdmanuals.com/home/multimedia/image/measuring-blood-pressure
Image:Measuring Blood Pressure-MSD Manual Consumer Version
other 52 89.8× 341
https://www.msdmanuals.com/home/multimedia/image/myringotomy-treating-secretory-otitis-media
Image:Myringotomy: Treating Secretory Otitis Media-MSD Manual Consumer Version
other 52 119.3× 256
https://www.msdmanuals.com/home/multimedia/image/placenta-and-embryo-at-about-8-weeks
Image:Placenta and Embryo at About 8 Weeks-MSD Manual Consumer Version
about 52 119.0× 257
https://www.msdmanuals.com/home/multimedia/image/simplified-life-cycle-of-the-human-immunodeficiency-virus
Image:Simplified Life Cycle of the Human Immunodeficiency Virus-MSD Manual Consumer Version
other 52 108.7× 287
https://www.msdmanuals.com/home/multimedia/image/sites-of-medication-action-on-life-cycle-of-hiv
Image:Sites of Medication Action on Life Cycle of HIV-MSD Manual Consumer Version
other 52 102.9× 302
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
/home/ 500 41 1% 296.6× Bot Blocked
🔗
Outbound External Citations
0 unique external domains cited across 1010 pages
facebook.com ×1000
msdvetmanual.com ×1000
msdprivacy.com ×1000
x.com ×1000
essentialaccessibility.com ×1000
use-p-sc-nextc.msdmanuals.com ×515
usw-p-sc-nextc.msdmanuals.com ×446
use-p-sc-nextp.msdmanuals.com ×22
🔄 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/msdmanuals.com

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

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📊 Semantic Share of Voice

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

Projected Impact

ROI EST.

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

Current Score
76
Projected Score
82
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
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