postgresql.org 76 B
🛡️ SEO 50 🤖 GEO 80 ⚡ Perf 80 🏗️ Arch 100

postgresql.org — Global SEODiff Score 76/100

postgresql.org
📊

postgresql.org shows strong AI visibility with an ACRI of 70/100, outperforming 67% of indexed domains. In the news sector, postgresql.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. A tight 2.3× token bloat ratio reflects disciplined markup: minimal noise between the crawler and the content it needs. Zero schema blocks puts this site at a disadvantage in knowledge graph and AI-answer pipelines that rely on explicit structured data. The site maintains an open-door policy for AI crawlers — GPTBot, ClaudeBot, and other major agents are all allowed.

76
B — Global SEODiff Score
Comprehensive search visibility assessment
Strong foundations, but Traditional SEO (50) is your bottleneck.
🎯 Top Fix: Add Organization + WebSite JSON-LD → +5–8 pts
🔬 Automated SEODiff Assessment · Snapshot: Mar 21, 2026 · 📋 API
📈 ACRI Trend 30 snapshots
Feb 22 Mar 21
🔔 Recent AI Indexing Activity
🔄 Mar 12 Content change detected
🔄 Mar 12 Content change detected
📈 Mar 10 ACRI +1 (56→57)
📉 Mar 7 ACRI -1 (57→56)
Does your site score higher than postgresql.org?
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)50 × 0.25 = 12.5
🤖 AI Readiness / GEO (40% weight)80 × 0.40 = 32.0
⚡ Performance (20% weight)80 × 0.20 = 16.0
🏗️ Architecture & Trust (15% weight)100 × 0.15 = 15.0
Weighted sum = 12.5 + 32.0 + 16.0 + 15.0
Global SEODiff Score = 76 (B)
📊 ACRI Sub-Scores (AI Readiness Detail)
100
Bot Access
avg 92
99
Rendering
avg 93
50
Structure
avg 35
0
Schema
avg 9
50
Tech Stack
avg 63
🔀
Visibility Delta: Google vs AI
Google (Tranco)
Top 0.1%
Rank #1432
+33 pts
Gap
AI (ACRI)
Top 33%
Score 70/100

postgresql.org 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 postgresql.org ranks here

Tech stackCustom / Proprietary
Industrynews
RenderingSSR
Schema coverage0 blocks
Token bloat2.3×

Fastest improvements

  • Add basic Organization and WebSite JSON-LD to fix “0 schema blocks” (see Schema Coverage).
  • 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

50/100 25 % of Global Score 🟢 High Confidence

📝 Title Tag

58 chars
Good length

Optimal range: 30–60 characters for SERP display.

📋 Meta Description

80 chars
Too short

Optimal range: 120–160 characters for snippet control.

🔤 Heading Hierarchy

  • ✓ Exactly 1 <h1> tag — found 1
  • ✓ Has <h2> headings — found 8
  • ✓ <h2> not before <h1>

🔍 Indexability

  • ✗ Canonical tag present
  • ✓ 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 — PostgreSQL
  • ✓ og:description — The world's most advanced open source database.
  • ✓ 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

80/100 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 news sector, medi.de (ACRI: 82) 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 →
postgresql.org
56
Your ACRI Score
82
Industry Peer ACRI
AI models prioritize pages with strong semantic structure and schema coverage. medi.de has schema coverage of 4 blocks and uses TYPO3. 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 50/100 — Fair
Structured Elements 55 elements (55 lists, 0 rows, 0 headers)
Total Words747
Raw Density7.4%

🏷️ Schema Health Docs

Organization Schema ❌ Missing
Product / Service Schema ⚠️ Not Found
Total Schema Blocks0 — No JSON-LD detected

Schema Coverage Map

0/7 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.
💡WebSite schema missing. Add WebSite + SearchAction so Google can generate a Sitelinks Search Box for your brand in AI results.

📐 AI Efficiency Metrics Docs

60
AI Extractability
Low
Crawl Cost
None
Blocklist Risk
Extractability60/100 — 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

43%
🗑️ 57%
Useful Content (9.9 KB)Bloat (13.1 KB)
Token Bloat Ratio2.3× — Lean

Multimodal Readiness

Visual Context100% Optimized for Vision
Image Alt Coverage8 / 8 images have alt text

TDM Rights

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

🔥 Structural Entropy Check Research

68 Entropy
Fair Token Bloat: Medium
Noise Ratio: 56.9% · SNR: 0.76 · Signal: 2533 / Noise: 3342 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 postgresql.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
Provides a powerful, open-source object-relational database system with SQL support and extensibility features.
Target Audience
Developers, administrators, organisations, data scientists, enterprises
Pricing Model
Free and open source
🛡️ Compliance Standards
ACIDWALPITR
🏆 Competitive Moat
Extensive feature set, open-source community, and high reliability
📊 Content Depth
10/10
🔄 Programmatic SEO Signals
API reference docscomparison pagesglossary/dictionary pages
⚡ Key Pain Points
• No explicit mention of meta descriptions
• Thin content on category pages
Analyzed by SEODiff AI · 2026-02-27

🔧 Tech Stack

AI-Readiness Score50/100
Servernginx
CDN
HTTP Status200
Load Time606 ms
Raw HTML Size23.0 KB
Visible Text Size9.9 KB

Performance & Speed

80/100 20 % of Global Score 🟢 High Confidence

⏱️ Time to First Byte

606 ms
Slow — bots may time out or deprioritise

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

📦 Page Weight

356
DOM nodes
23 KB
HTML payload
Lean page — fast for bots and users

🗄️ 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

100/100 15 % of Global Score 🟢 High Confidence

🗺️ Sitemap & Robots

  • ✓ Sitemap declared in robots.txt → https://www.postgresql.org/sitemap.xml
  • ✓ Googlebot allowed
  • ✓ GPTBot allowed
  • ✓ ClaudeBot allowed

🔗 Linking

77
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 56/100. Reach 80+ to unlock the green "AI-Verified" badge. Fix the issues below to improve your score.

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

Homepage ACRI
56
Single-page score
+16
Subpages outperform homepage
Δ delta
Site-Wide ACRI
73
Avg across 1010 pages · Range 0–82
Topical Cohesion
6%
Topical Drift
TF-IDF cosine similarity
Total Words
1342029
Avg Bloat
6.6×
RAG Fractures [?]
8
⚠️
8 RAG-Chunking Fractures Detected

Poorly formatted tables or pricing grids on 8 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.postgresql.org/docs/current/sql-fetch.html
PostgreSQL: Documentation: 18: FETCH
docs 82 4.4× 1190
https://www.postgresql.org/docs/18/textsearch-psql.html
PostgreSQL: Documentation: 18: 12.10. psql Support
docs 82 4.5× 933
https://www.postgresql.org/docs/18/auth-ldap.html
PostgreSQL: Documentation: 18: 20.10. LDAP Authentication
pricing 82 3.6× 1331 💰 Pricing
https://www.postgresql.org/docs/18/app-pgrewind.html
PostgreSQL: Documentation: 18: pg_rewind
docs 82 3.3× 1754
https://www.postgresql.org/docs/current/app-pgrewind.html
PostgreSQL: Documentation: 18: pg_rewind
docs 82 3.3× 1754
https://www.postgresql.org/docs/current/ddl-alter.html
PostgreSQL: Documentation: 18: 5.7. Modifying Tables
docs 82 4.3× 1189
https://www.postgresql.org/docs/current/libpq-example.html
PostgreSQL: Documentation: 18: 32.23. Example Programs
pricing 82 3.1× 1936 💰 Pricing
https://www.postgresql.org/docs/current/logicaldecoding-explanation.html
PostgreSQL: Documentation: 18: 47.2. Logical Decoding Concepts
docs 82 3.3× 1728
https://www.postgresql.org/docs/18/catalog-pg-depend.html
PostgreSQL: Documentation: 18: 52.18. pg_depend
docs 82 4.2× 1226
https://www.postgresql.org/docs/18/ddl-alter.html
PostgreSQL: Documentation: 18: 5.7. Modifying Tables
docs 82 4.3× 1189
https://www.postgresql.org/docs/18/app-pgcombinebackup.html
PostgreSQL: Documentation: 18: pg_combinebackup
docs 82 3.6× 1246
https://www.postgresql.org/docs/current/encryption-options.html
PostgreSQL: Documentation: 18: 18.8. Encryption Options
docs 82 4.8× 808
https://www.postgresql.org/docs/current/applevel-consistency.html
PostgreSQL: Documentation: 18: 13.4. Data Consistency Checks at the Application Level
docs 82 4.1× 1149
https://www.postgresql.org/docs/18/sepgsql.html
PostgreSQL: Documentation: 18: F.40. sepgsql — SELinux-, label-based mandatory access control (MAC) security module
pricing 82 3.1× 3275 💰 Pricing
https://www.postgresql.org/docs/18/pltcl-dbaccess.html
PostgreSQL: Documentation: 18: 42.5. Database Access from PL/Tcl
pricing 82 3.9× 1313 💰 Pricing
https://www.postgresql.org/docs/current/protocol-logicalrep-message-formats.html
PostgreSQL: Documentation: 18: 54.9. Logical Replication Message Formats
docs 82 4.9× 1691
https://www.postgresql.org/docs/18/config-setting.html
PostgreSQL: Documentation: 18: 19.1. Setting Parameters
pricing 82 3.2× 2197 💰 Pricing
https://www.postgresql.org/docs/current/config-setting.html
PostgreSQL: Documentation: 18: 19.1. Setting Parameters
pricing 82 3.2× 2197 💰 Pricing
https://www.postgresql.org/docs/18/sql-alterdomain.html
PostgreSQL: Documentation: 18: ALTER DOMAIN
docs 82 4.6× 1059
https://www.postgresql.org/docs/current/glossary.html
PostgreSQL: Documentation: 18: Appendix M. Glossary
docs 82 4.1× 6039
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
/docs/ 499 81 0% 4.2× Healthy
/about/ 1 82 0% 3.6× Healthy
🔄 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/postgresql.org

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

🔗 Similar news Sites

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

Domain ACRI AI Score Tech Stack Token Bloat Schema
postgresql.org (this site) 56 70 Custom / Proprietary 2.3× 0
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📊 Semantic Share of Voice

How often would an AI cite postgresql.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…

🎭

Bait & Switch Delta

C 15 PAGES

Compares your homepage rendering quality with inner pages. A high drift score means AI crawlers see a polished homepage but degraded inner content — the "bait & switch" that erodes trust.

82
Homepage ACRI
44
Inner Avg ACRI
+38
ACRI Delta
0%
Homepage Ghost
19%
Inner Avg Ghost
27
Drift Score [?]
Worst Inner Pages
44 20% docs https://www.postgresql.org/docs/18/spi-spi-getrelname.html
44 20% docs https://www.postgresql.org/docs/18/spi-spi-freetuple.html
44 20% docs https://www.postgresql.org/docs/18/external-projects.html
🛡️

E-E-A-T Trust Signals

F 15/100

Trust indicators extracted from surface pages. These signals help AI systems verify your site's Experience, Expertise, Authoritativeness, and Trustworthiness.

Physical Address
Phone Number
Email Contact
About Page
Contact Page
Privacy Policy
Terms of Service
Named Leadership
🔗

Citation Profile

12 DOMAINS

Outbound citation patterns across surface-crawled pages. Sites that cite diverse, authoritative sources signal higher E-E-A-T to AI systems.

12
Total Links
12
Unique Domains
0.8
Avg/Page
100%
Diversity
wiki.postgresql.org docs.postgresql.fr en.wikipedia.org postgis.net tech.zalando.com postgres.heroku.com cloudflare.com wcca.wicourts.gov gandi.net postgres.cn
🏘️ Outbound Neighborhood Trust Avg Trust: 1.3

AI trust scores for the domains postgresql.org links to. Citing high-trust sources lifts your own credibility signal.

🩹

Remediation Patches

COPY-PASTE

Auto-generated code fixes tailored to postgresql.org. 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": "Postgresql",
  "url": "https://postgresql.org",
  "logo": "https://postgresql.org/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": "Postgresql",
  "url": "https://postgresql.org",
  "potentialAction": {
    "@type": "SearchAction",
    "target": "https://postgresql.org/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 Postgresql?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Add your answer here — describe what Postgresql does in 1-2 sentences."
      }
    },
    {
      "@type": "Question",
      "name": "How does Postgresql work?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Explain the key features and how users interact with Postgresql."
      }
    }
  ]
}
</script>
📈

Projected Impact

ROI EST.

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

Current Score
70
Projected Score
83
Improvement
+13 pts
Add Organization schema +6 pts
Add WebSite schema +4 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
🔍 Found indexing issues?
Run a free deep audit to diagnose crawled-not-indexed, soft 404s, redirect errors, and more.
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