optica.org 70 B
🛡️ SEO 37 🤖 GEO 87 ⚡ Perf 74 🏗️ Arch 73

optica.org — Global SEODiff Score 70/100

optica.org
📊

optica.org achieves a 81/100 on the AI-Crawler Reality Index, reflecting above-average readiness for AI-driven discovery. In the infrastructure sector, optica.org outperforms the average (57), 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. The token bloat ratio sits at a lean 2.6×, 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.

70
B — Global SEODiff Score
Comprehensive search visibility assessment
Strong foundations, but Traditional SEO (37) is your bottleneck.
🎯 Top Fix: Monitor weekly to catch regressions early
🔬 Automated SEODiff Assessment · Snapshot: Mar 20, 2026 · 📋 API
📈 ACRI Trend 5 snapshots
Mar 2 Mar 20
🔔 Recent AI Indexing Activity
🔄 Mar 20 Content change detected
🔄 Mar 18 Content change detected
🔄 Mar 12 Content change detected
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🧮 Score Transparency — How is this calculated?
🛡️ Traditional SEO (25% weight)37 × 0.25 = 9.2
🤖 AI Readiness / GEO (40% weight)87 × 0.40 = 34.8
⚡ Performance (20% weight)74 × 0.20 = 14.8
🏗️ Architecture & Trust (15% weight)73 × 0.15 = 10.9
Weighted sum = 9.2 + 34.8 + 14.8 + 10.9
Global SEODiff Score = 70 (B)
📊 ACRI Sub-Scores (AI Readiness Detail)
100
Bot Access
avg 92
99
Rendering
avg 93
71
Structure
avg 35
44
Schema
avg 9
55
Tech Stack
avg 63
🔀
Visibility Delta: Google vs AI
Google (Tranco)
Top 2%
Rank #17854
Aligned
Gap
AI (ACRI)
Top 5%
Score 81/100

optica.org has balanced Google and AI visibility — both rank roughly in the same tier. ACRI measures technical crawler readiness. Read the methodology →

Why optica.org ranks here

Tech stackExpress
RenderingSSR
Schema coverage2 blocks
Token bloat2.6×

Fastest improvements

  • You’re already in decent shape — the next moat is monitoring drift over time.
  • 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

37/100 25 % of Global Score 🟡 Medium Confidence

📝 Title Tag

13 chars
Too short

Optimal range: 30–60 characters for SERP display.

📋 Meta Description

149 chars
Good length

Optimal range: 120–160 characters for snippet control.

🔤 Heading Hierarchy

  • ✗ Exactly 1 <h1> tag — found 0
  • ✓ Has <h2> headings — found 7
  • ✗ <h2> not before <h1>

🔍 Indexability

  • ✗ Canonical tag present
  • ✓ No noindex directive
  • ✓ Meta viewport set
  • ✗ HTML lang attribute
  • ✗ Hreflang tags
  • ✓ 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

87/100 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 →
optica.org
72
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 71/100 — Good
Structured Elements 132 elements (132 lists, 0 rows, 0 headers)
Total Words866
Raw Density15.2%

🏷️ Schema Health Docs

Organization Schema ✅ Present
Product / Service Schema ⚠️ Not Found
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
💡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

77
AI Extractability
Low
Crawl Cost
None
Blocklist Risk
Extractability77/100 — AI models can easily 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

38%
🗑️ 62%
Useful Content (42.9 KB)Bloat (67.5 KB)
Token Bloat Ratio2.6× — Lean

Multimodal Readiness

Visual Context71% Optimized for Vision
Image Alt Coverage15 / 21 images have alt text

TDM Rights

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

🔥 Structural Entropy Check Research

60 Entropy
Fair Token Bloat: Medium
Noise Ratio: 61.1% · SNR: 0.64 · Signal: 10983 / Noise: 17280 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 optica.org 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
Optica is a society dedicated to advancing optics and photonics worldwide, providing resources and fostering collaboration for scientists, engineers, and professionals in the field.
Target Audience
Scientists, engineers, business professionals, students, and others interested in optics and photonics.
Pricing Model
Membership-based with various tiers (Individual, Corporate, Distinguished & Honorary), offering benefits and services related to the field.
🏆 Competitive Moat
Leading organization for scientists and professionals in optics and photonics, with a strong legacy and member-driven collaboration.
📊 Content Depth
5/10
🔄 Programmatic SEO Signals
NewsroomPublicationsEvents
Analyzed by SEODiff AI · 2026-03-01

🔧 Tech Stack

FrameworkExpress
AI-Readiness Score55/100
ServerMicrosoft-IIS/10.0
CDN
HTTP Status200
Load Time542 ms
Raw HTML Size110.4 KB
Visible Text Size42.9 KB

Performance & Speed

74/100 20 % of Global Score 🟢 High Confidence

⏱️ Time to First Byte

542 ms
Acceptable — room for improvement

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

📦 Page Weight

779
DOM nodes
110 KB
HTML payload
Moderate weight — acceptable for most scenarios

🗄️ 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

73/100 15 % of Global Score 🟢 High Confidence

🗺️ Sitemap & Robots

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

🔗 Linking

141
internal links
26
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
  • ✓ 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 72/100. Reach 80+ to unlock the green "AI-Verified" badge. Fix the issues below to improve your score.

AI-Verified badge for optica.org
Pending Audit — score below 80 threshold
<a href="https://seodiff.io/radar/domains/optica.org" rel="noopener"><img src="https://seodiff.io/api/v1/badge?domain=optica.org" 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 21 pages · Deep-10

Homepage ACRI
72
Single-page score
-61
Severe hidden bloat
Δ delta
Site-Wide ACRI
12
Avg across 21 pages · Range 0–67
🔍
Hidden Bloat Detected

Homepage scores 72, but internal pages average only 12 — a -61-point gap. Blogs, docs, and legacy content are dragging down AI readability site-wide.

Topical Cohesion
3%
Topical Drift
TF-IDF cosine similarity
Total Words
2841
Avg Bloat
7.7×
Page Type ACRI Token Bloat Words Status
https://optica.org/careers
Careers | Optica
careers 67 36.7× 570
https://optica.org/about
About Optica | Optica
about 64 39.0× 699
https://optica.org/blog
Optica Blog | Optica
blog 64 38.8× 1200
https://optica.org/help
Help Center | Optica
pricing 54 48.1× 372 💰 Pricing
https://optica.org/api docs 0 0.0× 0
https://optica.org/pricing pricing 0 0.0× 0
https://optica.org/guides blog 0 0.0× 0
https://optica.org/resources blog 0 0.0× 0
https://optica.org/features product 0 0.0× 0
https://optica.org/solutions product 0 0.0× 0
https://optica.org/products product 0 0.0× 0
https://optica.org/docs docs 0 0.0× 0
https://optica.org/case-studies social-proof 0 0.0× 0
https://optica.org/demo conversion 0 0.0× 0
https://optica.org/get-started conversion 0 0.0× 0
https://optica.org/support support 0 0.0× 0
https://optica.org/faq support 0 0.0× 0
https://optica.org/integrations integrations 0 0.0× 0
https://optica.org/contact support 0 0.0× 0
https://optica.org/security trust 0 0.0× 0
Showing 20 of 21 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
/docs/ 1 0 0% 0.0× Low AI Readiness
/case-studies/ 1 0 0% 0.0× Low AI Readiness
/resources/ 1 0 0% 0.0× Low AI Readiness
/demo/ 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
/pricing/ 1 0 0% 0.0× Low AI Readiness
/about/ 1 64 0% 39.0× High JS Bloat
/solutions/ 1 0 0% 0.0× Low AI Readiness
/support/ 1 0 0% 0.0× Low AI Readiness
/trust/ 1 0 0% 0.0× Low AI Readiness
/get-started/ 1 0 0% 0.0× Low AI Readiness
/api/ 1 0 0% 0.0× Low AI Readiness
/products/ 1 0 0% 0.0× Low AI Readiness
/blog/ 1 64 0% 38.8× High JS Bloat
🔗
Outbound External Citations
0 unique external domains cited across 21 pages
lightourfuture.org ×4
ofcconference.org ×4
prism.optica.org ×4
optics4kids.org ×4
opticastore.org ×4
frontiersinoptics.com ×4
opg.optica.org ×4
account.osa.org ×4
🔄 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/optica.org

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🔗 Similar infrastructure Sites

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

Domain ACRI AI Score Tech Stack Token Bloat Schema
optica.org (this site) 72 81 Express 2.6× 2
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📊 Semantic Share of Voice

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

Projected Impact

ROI EST.

If you apply the patches above, here's the estimated improvement for optica.org:

Current Score
81
Projected Score
84
Improvement
+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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