julialang.org 64 C
🛡️ SEO 50 🤖 GEO 76 ⚡ Perf 40 🏗️ Arch 85

julialang.org — Global SEODiff Score 64/100

julialang.org
📊

julialang.org shows strong AI visibility with an ACRI of 66/100, outperforming 57% of indexed domains. Compared to other developer sites (avg score: 58), julialang.org 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. With a 3.0× bloat ratio, the page delivers its content without excessive boilerplate, giving AI systems a clean extraction path. No structured data was detected, which means AI systems must infer all entities and relationships from raw HTML alone. The site maintains an open-door policy for AI crawlers — GPTBot, ClaudeBot, and other major agents are all allowed.

64
C — Global SEODiff Score
Comprehensive search visibility assessment
Strong foundations, but Performance (40) is your bottleneck.
🎯 Top Fix: Add Organization + WebSite JSON-LD → +5–8 pts
🔬 Automated SEODiff Assessment · Snapshot: Feb 28, 2026 · 📋 API
📈 ACRI Trend 3 snapshots
Feb 23 Feb 28
🔔 Recent AI Indexing Activity
No recent changes detected by adaptive crawler.
Does your site score higher than julialang.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)76 × 0.40 = 30.4
⚡ Performance (20% weight)40 × 0.20 = 8.0
🏗️ Architecture & Trust (15% weight)85 × 0.15 = 12.8
Weighted sum = 12.5 + 30.4 + 8.0 + 12.8
Global SEODiff Score = 64 (C)
📊 ACRI Sub-Scores (AI Readiness Detail)
100
Bot Access
avg 92
99
Rendering
avg 93
28
Structure
avg 36
0
Schema
avg 9
55
Tech Stack
avg 63
🔀
Visibility Delta: Google vs AI
Google (Tranco)
Top 4%
Rank #41585
+39 pts
Gap
AI (ACRI)
Top 43%
Score 66/100

julialang.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 julialang.org ranks here

Tech stackExpress
Industrydeveloper
RenderingSSR
Schema coverage0 blocks
Token bloat3.0×

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

30 chars
Good length

Optimal range: 30–60 characters for SERP display.

📋 Meta Description

143 chars
Good length

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
  • ✓ 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

76/100 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 developer sector, hikkoshizamurai.jp (ACRI: 88) 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 →
julialang.org
48
Your ACRI Score
88
Industry Peer ACRI
AI models prioritize pages with strong semantic structure and schema coverage. hikkoshizamurai.jp has schema coverage of 5 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 5%
0% — Safe 50% 100% — Risk
Status Server-Side Rendered (Safe)
Rendering Type SSR

📊 Structure & Information Density Docs

Structure Grade 28/100 — Low
Structured Elements 43 elements (43 lists, 0 rows, 0 headers)
Total Words1788
Raw Density2.4%
💡Low structure score (28/100). Your content appears as a wall of text with few structured HTML elements. You have 43 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 ❌ 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

53
AI Extractability
Low
Crawl Cost
None
Blocklist Risk
Extractability53/100 — 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

33%
🗑️ 67%
Useful Content (19.8 KB)Bloat (40.0 KB)
Token Bloat Ratio3.0× — Lean

Multimodal Readiness

Visual Context93% Optimized for Vision
Image Alt Coverage25 / 27 images have alt text

TDM Rights

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

🔥 Structural Entropy Check Research

50 Entropy
Fair Token Bloat: Medium
Noise Ratio: 66.9% · SNR: 0.50 · Signal: 5065 / Noise: 10231 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…

🔧 Tech Stack

FrameworkExpress
AI-Readiness Score55/100
ServerGitHub.com
CDN
HTTP Status200
Load Time4208 ms
Raw HTML Size59.8 KB
Visible Text Size19.8 KB

Performance & Speed

40/100 20 % of Global Score 🟢 High Confidence

⏱️ Time to First Byte

4208 ms
Slow — bots may time out or deprioritise

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

📦 Page Weight

915
DOM nodes
60 KB
HTML payload
Lean page — fast for bots and users

🗄️ Cache & CDN

  • ✓ Cache-Control header → max-age=600
  • ✗ 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

85/100 15 % of Global Score 🟢 High Confidence

🗺️ Sitemap & Robots

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

🔗 Linking

68
internal links
137
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 48/100. Reach 80+ to unlock the green "AI-Verified" badge. Fix the issues below to improve your score.

AI-Verified badge for julialang.org
Pending Audit — score below 80 threshold
<a href="https://seodiff.io/radar/domains/julialang.org" rel="noopener"><img src="https://seodiff.io/api/v1/badge?domain=julialang.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 79 pages · Deep-10

Homepage ACRI
48
Single-page score
+26
Subpages outperform homepage
Δ delta
Site-Wide ACRI
75
Avg across 79 pages · Range 39–87
Topical Cohesion
13%
Topical Drift
TF-IDF cosine similarity
Total Words
151825
Avg Bloat
7.2×
Page Type ACRI Token Bloat Words Status
https://julialang.org/blog/2022/02/10years/index.html
Why We Use Julia, 10 Years Later
pricing 87 1.7× 22380 💰 Pricing
https://julialang.org/blog/2016/09/biojulia2016-mid/index.html
BioJulia 2016 - online sequence search, sequence demultiplexing, new readers and much more!
blog 82 4.4× 1153
https://julialang.org/blog/2024/10/julia-1.11-highlights/index.html
Julia 1.11 Highlights
pricing 82 3.5× 1995 💰 Pricing
https://julialang.org/blog/2021/08/juliacon-highlights/index.html
JuliaCon 2021 Highlights
blog 82 5.0× 841
https://julialang.org/blog/2016/08/GSoC2016-Graft/index.html
Vertex and Edge Metadata
blog 82 3.7× 1533
https://julialang.org/blog/2021/11/julia-1.7-highlights/index.html
Julia 1.7 Highlights
blog 82 2.6× 4840
https://julialang.org/blog/2018/12/ml-language-compiler/index.html
Building a Language and Compiler for Machine Learning
pricing 82 3.1× 1790 💰 Pricing
https://julialang.org/blog/2018/08/GSoC2018-speech-recognition/index.html
GSoC 2018 and Speech Recognition for the Flux Model Zoo: The Conclusion
blog 82 3.9× 2010
https://julialang.org/blog/2025/08/this-month-in-julia-world/index.html
This Month in Julia World (June and July 2025)
pricing 82 3.6× 1631 💰 Pricing
https://julialang.org/blog/2021/03/julia-1.6-highlights/index.html
Julia 1.6 Highlights
blog 82 2.3× 3830
https://julialang.org/blog/2017/09/bio-parallel/index.html
GSoC 2017: Parallelism in BioJulia
blog 82 4.5× 1012
https://julialang.org/blog/2018/08/adding-newer-features-and-speeding-up-convolutions-in-flux/index.html
GSoC 2018: Adding Newer Features and Speeding up Convolutions in Flux
blog 82 2.8× 2349
https://julialang.org/blog/2018/08/one-point-zero/index.html
Announcing the release of Julia 1.0
blog 82 3.0× 1635
https://julialang.org/blog/2015/10/auto-diff-in-julia/index.html
JSoC 2015 project: Automatic Differentiation in Julia with ForwardDiff.jl
pricing 82 5.0× 2065 💰 Pricing
https://julialang.org/blog/2018/06/missing/index.html
First-Class Statistical Missing Values Support in Julia 0.7
blog 82 2.7× 3822
https://julialang.org/blog/2021/01/contributhon/index.html
The 2020 Industry Julia Users Contributhon
blog 82 4.8× 931
https://julialang.org/blog/2019/06/diffeqbot/index.html
Hello @DiffEqBot
pricing 82 3.9× 1462 💰 Pricing
https://julialang.org/blog/2013/04/put-this-in-your-pipe/index.html
Put This In Your Pipe
blog 82 3.0× 2528
https://julialang.org/blog/2017/01/moredots/index.html
More Dots: Syntactic Loop Fusion in Julia
blog 82 2.3× 5253
https://julialang.org/blog/2019/09/profilers/index.html
Profiling tool wins and woes
pricing 82 2.5× 3865 💰 Pricing
Showing 20 of 79 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
/blog/ 79 74 0% 7.2× High JS Bloat
🔗
Outbound External Citations
0 unique external domains cited across 79 pages
docs.julialang.org ×79
franklinjl.org ×79
juliacon.org ×79
juliaacademy.com ×79
github.com ×79
youtube.com ×79
en.wikipedia.org ×22
discourse.julialang.org ×14
🔄 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/julialang.org

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

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📊 Semantic Share of Voice

How often would an AI cite julialang.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 julialang.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": "Julialang",
  "url": "https://julialang.org",
  "logo": "https://julialang.org/assets/infra/julia.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": "Julialang",
  "url": "https://julialang.org",
  "potentialAction": {
    "@type": "SearchAction",
    "target": "https://julialang.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 Julialang?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Add your answer here — describe what Julialang does in 1-2 sentences."
      }
    },
    {
      "@type": "Question",
      "name": "How does Julialang work?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Explain the key features and how users interact with Julialang."
      }
    }
  ]
}
</script>
📈

Projected Impact

ROI EST.

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

Current Score
66
Projected Score
79
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