studystack.com 72 B
🛡️ SEO 58 🤖 GEO 70 ⚡ Perf 80 🏗️ Arch 93

studystack.com — Global SEODiff Score 72/100

studystack.com
📊

studystack.com shows strong AI visibility with an ACRI of 75/100, outperforming 81% of indexed domains. Compared to other social sites (avg score: 57), studystack.com performs above the benchmark, suggesting strong competitive positioning in AI search. A ghost ratio of 15% indicates a mixed rendering strategy where core content loads server-side but interactive sections rely on JavaScript. The 9.2× token bloat ratio falls within the normal range, though there is room to trim navigation, footer, and script overhead. 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.

72
B — Global SEODiff Score
Comprehensive search visibility assessment
Strong foundations, but Traditional SEO (58) is your bottleneck.
🎯 Top Fix: Monitor weekly to catch regressions early
🔬 Automated SEODiff Assessment · Snapshot: Mar 15, 2026 · 📋 API
📈 ACRI Trend 20 snapshots
Feb 22 Mar 15
🔔 Recent AI Indexing Activity
No recent changes detected by adaptive crawler.
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🧮 Score Transparency — How is this calculated?
🛡️ Traditional SEO (25% weight)58 × 0.25 = 14.5
🤖 AI Readiness / GEO (40% weight)70 × 0.40 = 28.0
⚡ Performance (20% weight)80 × 0.20 = 16.0
🏗️ Architecture & Trust (15% weight)93 × 0.15 = 13.9
Weighted sum = 14.5 + 28.0 + 16.0 + 13.9
Global SEODiff Score = 72 (B)
📊 ACRI Sub-Scores (AI Readiness Detail)
100
Bot Access
avg 92
94
Rendering
avg 93
53
Structure
avg 35
42
Schema
avg 9
50
Tech Stack
avg 63
🔀
Visibility Delta: Google vs AI
Google (Tranco)
Top 10%
Rank #95650
+10 pts
Gap
AI (ACRI)
Top 19%
Score 75/100

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

Why studystack.com ranks here

Tech stackCustom / Proprietary
Industrysocial
RenderingHybrid
Schema coverage1 blocks
Token bloat9.2×

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

58/100 25 % of Global Score 🟢 High Confidence

📝 Title Tag

39 chars
Good length

Optimal range: 30–60 characters for SERP display.

📋 Meta Description

157 chars
Good length

Optimal range: 120–160 characters for snippet control.

🔤 Heading Hierarchy

  • ✓ Exactly 1 <h1> tag — found 1
  • ✓ Has <h2> headings — found 4
  • ✓ <h2> not before <h1>

🔍 Indexability

  • ✓ Canonical tag present → https://www.studystack.com/
  • ✓ 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 — StudyStack
  • ✓ og:description — Create and share free flashcards and study games.
  • ✓ 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

70/100 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 social sector, martin-sad.ru (ACRI: 87) 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 →
studystack.com
49
Your ACRI Score
87
Industry Peer ACRI
AI models prioritize pages with strong semantic structure and schema coverage. martin-sad.ru has schema coverage of 63 blocks and uses Custom / Proprietary. 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 53/100 — Fair
Structured Elements 19 elements (19 lists, 0 rows, 0 headers)
Total Words223
Raw Density8.5%

🏷️ Schema Health Docs

Organization Schema ✅ Present
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
💡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

61
AI Extractability
Low
Crawl Cost
None
Blocklist Risk
Extractability61/100 — AI models can partially extract answers from this page
Crawl CostLow (10/100) — efficient for AI crawlers to process
Blocklist RiskNone — 0 of 5 AI crawlers blocked

Token Bloat Research

10%
🗑️ 90%
Useful Content (4.3 KB)Bloat (35.4 KB)
Token Bloat Ratio9.2× — Normal

Multimodal Readiness

Visual Context100% Optimized for Vision
Image Alt Coverage10 / 10 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: 89.2% · SNR: 0.12 · Signal: 1099 / Noise: 9068 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 studystack.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
StudyStack is a dynamic study tool utilizing flashcards and games to enhance learning and memorization.
Target Audience
Students, educators, learners
Pricing Model
Free with optional PRO subscription for ad-free experience and enhanced features.
🏆 Competitive Moat
Gamified learning through automated flashcard-based games and community-generated content.
📊 Content Depth
5/10
Analyzed by SEODiff AI · 2026-03-05

🔧 Tech Stack

AI-Readiness Score50/100
ServerApache
CDN
HTTP Status200
Load Time562 ms
Raw HTML Size39.7 KB
Visible Text Size4.3 KB

Performance & Speed

80/100 20 % of Global Score 🟢 High Confidence

⏱️ Time to First Byte

562 ms
Acceptable — room for improvement

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

📦 Page Weight

223
DOM nodes
40 KB
HTML payload
Lean page — fast for bots and users

🗄️ Cache & CDN

  • ✓ Cache-Control header → max-age=0, no-cache, no-store, must-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

93/100 15 % of Global Score 🟢 High Confidence

🗺️ Sitemap & Robots

  • ✓ Sitemap declared in robots.txt → https://www.studystack.com/sitemapindex.xml
  • ✓ Googlebot allowed
  • ✓ GPTBot allowed
  • ✓ ClaudeBot allowed

🔗 Linking

21
internal links
1
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 49/100. Reach 80+ to unlock the green "AI-Verified" badge. Fix the issues below to improve your score.

AI-Verified badge for studystack.com
Pending Audit — score below 80 threshold
<a href="https://seodiff.io/radar/domains/studystack.com" rel="noopener"><img src="https://seodiff.io/api/v1/badge?domain=studystack.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 46 pages · Deep-10

Homepage ACRI
49
Single-page score
+4
Consistent readability
Δ delta
Site-Wide ACRI
53
Avg across 46 pages · Range 0–86
Topical Cohesion
19%
Topical Drift
TF-IDF cosine similarity
Total Words
25213
Avg Bloat
25.9×
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.studystack.com/projects.html
Projects completed by John Weidner
pricing 86 1.8× 1185 💰 Pricing
https://www.studystack.com/FAQ
Study Stack - Frequently Asked Questions
pricing 85 6.9× 1762 💰 Pricing
https://www.studystack.com/resume.html
Resume - John Weidner
other 72 4.7× 416 ⚠️ RAG Fracture
https://www.studystack.com/flashcard-4569391
Free Geography Flashcards and Study Games about Geo Chapter 3
pricing 72 19.0× 955 💰 Pricing
https://www.studystack.com/flashcard-4639672
Free Geography Flashcards and Study Games about Geo. Ch. 16
pricing 72 16.2× 1166 💰 Pricing
https://www.studystack.com/flashcard-4520404
Free Geography Flashcards and Study Games about Geo Chapter 2
pricing 72 17.6× 1067 💰 Pricing
https://www.studystack.com/flashcard-4630937
Free Geography Flashcards and Study Games about Asia Geo Vocab Fr
pricing 72 19.7× 878 💰 Pricing
https://www.studystack.com/flashcard-4635774
Free Geography Flashcards and Study Games about Geography ch. 15
pricing 67 28.8× 528 💰 Pricing
https://www.studystack.com/flashcard-2757259
Free Geography Flashcards and Study Games about Southeast Region
pricing 67 29.5× 552 💰 Pricing
https://www.studystack.com/category-1
Free Geography Flashcards
pricing 67 21.3× 942 💰 Pricing
https://www.studystack.com/flashcard-4639200
Free Geography Flashcards and Study Games about WG 9: Chpt. 2 Review
pricing 67 23.1× 693 💰 Pricing
https://www.studystack.com/flashcard-131884
Free Geography Flashcards and Study Games about "50 States/Capitals"
pricing 67 30.7× 582 💰 Pricing
https://www.studystack.com/flashcard-4630938
Free Geography Flashcards and Study Games about Asia Geo Vocab Tur
pricing 67 21.2× 820 💰 Pricing
https://www.studystack.com/flashcard-2678324
Free Geography Flashcards and Study Games about Grade 6 SS - Sem. 1
pricing 67 20.8× 865 💰 Pricing
https://www.studystack.com/flashcard-4632069
Free Geography Flashcards and Study Games about Europe Exam
pricing 67 26.1× 636 💰 Pricing
https://www.studystack.com/flashcard-4395346
Free Geography Flashcards and Study Games about Culture Vocabulary
pricing 67 25.2× 633 💰 Pricing
https://www.studystack.com/flashcard-2413678
Free Geography Flashcards and Study Games about Asia Geography Vocab
pricing 67 24.5× 665 💰 Pricing
https://www.studystack.com/flashcard-4622332
Free Geography Flashcards and Study Games about Geography ch.11 (6)
pricing 67 28.3× 599 💰 Pricing
https://www.studystack.com/flashcard-4618357
Free Geography Flashcards and Study Games about Geography vocab
pricing 67 28.0× 555 💰 Pricing
https://www.studystack.com/flashcard-4504279
Free Geography Flashcards and Study Games about Geo Chapter 1
pricing 67 22.1× 757 💰 Pricing
Showing 20 of 46 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
/flashcard-4079932/ 1 67 0% 27.7× High JS Bloat
/flashcard-12557/ 1 54 0% 34.6× High JS Bloat
/pricing/ 1 0 0% 0.0× Low AI Readiness
/faq/ 1 0 0% 0.0× Low AI Readiness
/FAQ/ 1 85 0% 7.0× High JS Bloat
/flashcard-4635774/ 1 67 0% 28.9× High JS Bloat
/blog/ 1 0 0% 0.0× Low AI Readiness
/flashcard-2757259/ 1 67 0% 29.6× High JS Bloat
/flashcard-2413678/ 1 67 0% 24.5× High JS Bloat
/flashcard-4615414/ 1 67 0% 20.8× High JS Bloat
/flashcard-12568/ 1 54 0% 34.6× High JS Bloat
/flashcard-4616038/ 1 54 0% 35.2× High JS Bloat
/techdetails.jsp/ 1 44 0% 66.0× High JS Bloat
/flashcard-4639672/ 1 72 0% 16.2× High JS Bloat
/flashcard-4639200/ 1 67 0% 23.1× High JS Bloat
🔄 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/studystack.com

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

🔗 Similar social Sites

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

Domain ACRI AI Score Tech Stack Token Bloat Schema
studystack.com (this site) 49 75 Custom / Proprietary 9.2× 1
masrefacciones.mx 74 80 Custom / Proprietary 5.5× 1 Compare →
weather-club.gr 74 86 Custom / Proprietary 6.4× 3 Compare →
malbi-soft.ru 74 79 Custom / Proprietary 4.0× 0 Compare →
jerkbait.pl 74 83 Custom / Proprietary 5.3× 3 Compare →
wmart.kz 74 79 Custom / Proprietary 3.2× 0 Compare →
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📊 Semantic Share of Voice

How often would an AI cite studystack.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 studystack.com. Copy and paste these into your codebase to improve AI visibility. These patches are mathematically proven to increase extraction accuracy →

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

Projected Impact

ROI EST.

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

Current Score
75
Projected Score
85
Improvement
+10 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
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