macmillanlearning.com 73 B
🛡️ SEO 51 🤖 GEO 82 ⚡ Perf 62 🏗️ Arch 97

macmillanlearning.com — Global SEODiff Score 73/100

macmillanlearning.com
📊

The AI-Readiness profile for macmillanlearning.com is strong: an ACRI of 72/100 places it ahead of 73% of domains in the index. Compared to other infrastructure sites (avg score: 57), macmillanlearning.com performs above the benchmark, suggesting strong competitive positioning in AI search. While the majority of content is server-rendered, the 15% ghost ratio suggests some content remains hidden from static crawlers. Token bloat registers at 7.0× — acceptable, but reducing inline scripts and redundant markup could yield measurable gains. Only 1 schema block is present — adding Organization, WebSite, and Breadcrumb schemas would significantly improve structured data coverage. All major AI bot user-agents (GPTBot, ClaudeBot, CCBot, Google-Extended) are permitted by robots.txt, ensuring broad AI crawler access.

73
B — Global SEODiff Score
Comprehensive search visibility assessment
Strong foundations, but Traditional SEO (51) is your bottleneck.
🎯 Top Fix: Monitor weekly to catch regressions early
🔬 Automated SEODiff Assessment · Snapshot: Mar 16, 2026 · 📋 API
📈 ACRI Trend 25 snapshots
Feb 22 Mar 16
🔔 Recent AI Indexing Activity
No recent changes detected by adaptive crawler.
Does your site score higher than macmillanlearning.com?
Run the same 40-signal audit on your own domain — free, instant results.
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🧮 Score Transparency — How is this calculated?
🛡️ Traditional SEO (25% weight)51 × 0.25 = 12.8
🤖 AI Readiness / GEO (40% weight)82 × 0.40 = 32.8
⚡ Performance (20% weight)62 × 0.20 = 12.4
🏗️ Architecture & Trust (15% weight)97 × 0.15 = 14.5
Weighted sum = 12.8 + 32.8 + 12.4 + 14.5
Global SEODiff Score = 73 (B)
📊 ACRI Sub-Scores (AI Readiness Detail)
100
Bot Access
avg 92
94
Rendering
avg 93
68
Structure
avg 35
2
Schema
avg 9
50
Tech Stack
avg 63
🔀
Visibility Delta: Google vs AI
Google (Tranco)
Top 3%
Rank #25178
+25 pts
Gap
AI (ACRI)
Top 27%
Score 72/100

macmillanlearning.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 macmillanlearning.com ranks here

Tech stackCustom / Proprietary
RenderingHybrid
Schema coverage1 blocks
Token bloat7.0×

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

51/100 25 % of Global Score 🟢 High Confidence

📝 Title Tag

68 chars
Too long

Optimal range: 30–60 characters for SERP display.

📋 Meta Description

158 chars
Good length

Optimal range: 120–160 characters for snippet control.

🔤 Heading Hierarchy

  • ✓ Exactly 1 <h1> tag — found 1
  • ✓ Has <h2> headings — found 16
  • ✗ <h2> not before <h1>

🔍 Indexability

  • ✓ Canonical tag present → https://www.macmillanlearning.com/college/us/Instructor Home Page
  • ✓ No noindex directive
  • ✓ Meta viewport set
  • ✓ HTML lang attribute → en
  • ➖ 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

82/100 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 →
macmillanlearning.com
62
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 15%
0% — Safe 50% 100% — Risk
Status Server-Side Rendered (Safe)
Rendering Type Hybrid

📊 Structure & Information Density Docs

Structure Grade 68/100 — Good
Structured Elements 107 elements (107 lists, 0 rows, 0 headers)
Total Words764
Raw Density14.0%

🏷️ Schema Health Docs

Organization Schema ❌ Missing
Product / Service Schema ⚠️ Not Found
Total Schema Blocks1 block(s) — Basic (low value for AI)

Schema Coverage Map

1/7 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.

📐 AI Efficiency Metrics Docs

59
AI Extractability
Low
Crawl Cost
None
Blocklist Risk
Extractability59/100 — 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

14%
🗑️ 86%
Useful Content (9.8 KB)Bloat (59.1 KB)
Token Bloat Ratio7.0× — Normal

Multimodal Readiness

Visual Context82% Optimized for Vision
Image Alt Coverage18 / 22 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: 85.8% · SNR: 0.17 · Signal: 2513 / Noise: 15124 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 macmillanlearning.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
21st Century Chemistry is a digital learning platform providing comprehensive resources for chemistry education, including interactive simulations, practice exercises, and
Target Audience
College students (undergraduate), high school students, chemistry instructors, and educational institutions.
Pricing Model
Subscription-based, with tiered pricing options (e.g., Achieve, Read & Practice, E-book, Print) offering varying levels of access to content and features. As low as $59.99 for a single format.
🔗 Integration Partners
iClickerLMS Integration
🏆 Competitive Moat
AI-powered assessment tools and personalized learning paths, combined with a comprehensive and continually updated digital library of chemistry resources.
📊 Content Depth
8/10
🔄 Programmatic SEO Signals
Template comparison pagesIntegration directory pages
⚡ Key Pain Points
• Lack of structured FAQ schema
• Thin landing pages for features
Analyzed by SEODiff AI · 2026-03-01

🔧 Tech Stack

AI-Readiness Score50/100
Servernginx/1.20.2
CDN
HTTP Status200
Load Time1691 ms
Raw HTML Size68.9 KB
Visible Text Size9.8 KB

Performance & Speed

62/100 20 % of Global Score 🟢 High Confidence

⏱️ Time to First Byte

1691 ms
Slow — bots may time out or deprioritise

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

📦 Page Weight

680
DOM nodes
69 KB
HTML payload
Lean page — fast for bots and users

🗄️ Cache & CDN

  • ✓ Cache-Control header → no-cache, no-store, max-age=0, 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
amplitude.com
📐 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

97/100 15 % of Global Score 🟢 High Confidence

🗺️ Sitemap & Robots

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

🔗 Linking

110
internal links
11
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 62/100. Reach 80+ to unlock the green "AI-Verified" badge. Fix the issues below to improve your score.

AI-Verified badge for macmillanlearning.com
Pending Audit — score below 80 threshold
<a href="https://seodiff.io/radar/domains/macmillanlearning.com" rel="noopener"><img src="https://seodiff.io/api/v1/badge?domain=macmillanlearning.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 113 pages · Deep-10

Homepage ACRI
62
Single-page score
0
Consistent readability
Δ delta
Site-Wide ACRI
63
Avg across 113 pages · Range 0–82
Topical Cohesion
8%
Topical Drift
TF-IDF cosine similarity
Total Words
255328
Avg Bloat
11.5×
RAG Fractures [?]
6
⚠️
6 RAG-Chunking Fractures Detected

Poorly formatted tables or pricing grids on 6 pages will be split incorrectly during RAG chunking, causing AI models to hallucinate prices and features.

Page Type ACRI Token Bloat Words Status
https://www.macmillanlearning.com/college/us/product/21st-Century-Chemistry/p/131910617X
21st Century Chemistry, 2nd Edition | Macmillan Learning US
pricing 82 4.3× 10468 ⚠️ RAG Fracture
https://www.macmillanlearning.com/college/us/product/Achieve-Writers-Help-for-Hacker-1-Term-Access-Multi-Course/p/1319131344
Achieve Writer's Help for Hacker | Macmillan Learning for Instructors
pricing 82 3.2× 19118 💰 Pricing
https://www.macmillanlearning.com/college/us/product/Achieve-Read--Practice-for-Americas-History-Value-Edition-1-Term-Access/p/1319283454
Achieve Read & Practice for America's History, 10th Edition | Macmillan Learning for Instructors
pricing 82 3.7× 11486 💰 Pricing
https://www.macmillanlearning.com/college/us/product/Achieve-Read--Practice-for-A-History-of-World-Societies-Value-Edition-1-Term-Access/p/1319282458
Achieve Read & Practice for A History of World Societies, 12th Edition | Macmillan Learning for Instructors
pricing 82 3.3× 15188 💰 Pricing
https://www.macmillanlearning.com/college/us/product/A-Guide-to-Writing-in-Psychology-with-2020-APA-Update/p/1319370322
A Guide to Writing in Psychology with 2020 APA Update, 1st Edition | Macmillan Learning US
pricing 77 9.1× 2514 💰 Pricing
https://www.macmillanlearning.com/college/us/product/A-Guide-to-Writing-in-Criminal-Justice-and-Criminology-with-2020-APA-Update/p/1319370349
A Guide to Writing in Criminal Justice and Criminology with 2020 APA Update, 1st Edition | Macmillan Learning US
pricing 77 9.4× 2591 💰 Pricing
https://www.macmillanlearning.com/college/us/product/Descriptive-Inorganic-Chemistry/p/1464125570
Descriptive Inorganic Chemistry, 6th Edition | Macmillan Learning US
pricing 77 9.7× 2989 💰 Pricing
https://www.macmillanlearning.com/college/us/product/A-Guide-to-Professional-Writing-with-2020-APA-Update/p/1319370330
A Guide to Professional Writing with 2020 APA Update, 1st Edition | Macmillan Learning US
pricing 77 9.3× 2435 💰 Pricing
https://www.macmillanlearning.com/college/us/product/A-Guide-to-Writing-in-Nursing-and-Health-Professions-with-2020-APA-Update/p/1319370357
A Guide to Writing in Nursing and Health Professions with 2020 APA Update, 1st Edition | Macmillan Learning US
pricing 77 8.9× 2561 💰 Pricing
https://www.macmillanlearning.com/college/us/product/Calculus/p/1319050735
Calculus, 4th Edition | Macmillan Learning US
pricing 77 6.0× 6615 💰 Pricing
https://www.macmillanlearning.com/college/us/product/Achieve-Writers-Help-for-Lunsford-1-Term-Access-Multi-Course/p/1319131263
Achieve Writer's Help for Lunsford | Macmillan Learning for Instructors
pricing 77 7.1× 4322 💰 Pricing
https://www.macmillanlearning.com/college/us/product/Teaching-with-Lunsford-Handbooks-2021-Update-Online-Only/p/1319133975
Teaching with Lunsford Handbooks, 2021 Update (Online Only), 3rd Edition | Macmillan Learning US
product 77 8.3× 2975
https://www.macmillanlearning.com/college/us/product/Investigating-Chemistry/p/1319079466
Investigating Chemistry, 4th Edition | Macmillan Learning US
pricing 77 7.8× 4697 ⚠️ RAG Fracture
https://www.macmillanlearning.com/college/us/product/A-Guide-to-Writing-in-Education/p/1319230830
A Guide to Writing in Education, 1st Edition | Macmillan Learning US
pricing 77 9.6× 2358 💰 Pricing
https://www.macmillanlearning.com/college/us/product/A-Guide-to-Writing-in-Social-Work/p/1319230865
A Guide to Writing in Social Work, 1st Edition | Macmillan Learning US
pricing 77 9.4× 2409 💰 Pricing
https://www.macmillanlearning.com/college/us/product/Universe/p/1319039448
Universe, 11th Edition | Macmillan Learning US
pricing 77 5.4× 7641 ⚠️ RAG Fracture
https://www.macmillanlearning.com/college/us/product/A-Guide-to-Writing-in-Art-and-Art-History/p/1319230784
A Guide to Writing in Art and Art History, 1st Edition | Macmillan Learning US
pricing 77 8.9× 2640 💰 Pricing
https://www.macmillanlearning.com/college/us/product/Calculus-Early-Transcendentals/p/1319050743
Calculus: Early Transcendentals, 4th Edition | Macmillan Learning US
pricing 77 6.1× 6778 ⚠️ RAG Fracture
https://www.macmillanlearning.com/college/us/product/Calculus-Early-Transcendentals-Multivariable/p/1319055923
Calculus: Early Transcendentals Multivariable, 4th Edition | Macmillan Learning US
pricing 77 5.1× 5689 💰 Pricing
https://www.macmillanlearning.com/college/us/product/Calculus-Early-Transcendentals-Single-Variable/p/1319055931
Calculus: Early Transcendentals Single Variable, 4th Edition | Macmillan Learning US
pricing 77 5.6× 5318 💰 Pricing
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
/college/ 103 69 0% 12.6× High JS Bloat
/docs/ 1 0 0% 0.0× Low AI Readiness
/about/ 1 0 0% 0.0× Low AI Readiness
/features/ 1 0 0% 0.0× Low AI Readiness
/blog/ 1 0 0% 0.0× Low AI Readiness
/integrations/ 1 0 0% 0.0× Low AI Readiness
/case-studies/ 1 0 0% 0.0× Low AI Readiness
/pricing/ 1 0 0% 0.0× Low AI Readiness
/products/ 1 0 0% 0.0× Low AI Readiness
/contact/ 1 0 0% 0.0× Low AI Readiness
/faq/ 1 0 0% 0.0× Low AI Readiness
🔗
Outbound External Citations
0 unique external domains cited across 113 pages
us.macmillan.com ×103
store.macmillanlearning.com ×103
tracking.mpsvirginia.com ×103
instagram.com ×103
youtube.com ×103
mhe.my.site.com ×103
sustainability.macmillan.com ×103
twitter.com ×103
🔄 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/macmillanlearning.com

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

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📊 Semantic Share of Voice

How often would an AI cite macmillanlearning.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 macmillanlearning.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": "Macmillanlearning",
  "url": "https://macmillanlearning.com",
  "logo": "https://prod-cat-files.macmillan.cloud/MediaResources/instructorcatalog/global/favicon.ico",
  "sameAs": []
}
</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 Macmillanlearning?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Add your answer here — describe what Macmillanlearning does in 1-2 sentences."
      }
    },
    {
      "@type": "Question",
      "name": "How does Macmillanlearning work?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Explain the key features and how users interact with Macmillanlearning."
      }
    }
  ]
}
</script>
📈

Projected Impact

ROI EST.

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

Current Score
72
Projected Score
84
Improvement
+12 pts
Add Organization schema +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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