marseille.fr 58 D
🛡️ SEO 27 🤖 GEO 85 ⚡ Perf 46 🏗️ Arch 54

marseille.fr — Global SEODiff Score 58/100

marseille.fr
📊

With a solid 81/100 ACRI, marseille.fr is well-positioned for AI search — better than 95% of sites in the Radar. In the ecommerce sector, marseille.fr 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 3.8× token bloat ratio reflects disciplined markup: minimal noise between the crawler and the content it needs. No structured data was detected, which means AI systems must infer all entities and relationships from raw HTML alone. Robots.txt grants unrestricted access to the key AI user-agents, which is the strongest starting position for AI visibility.

58
D — Global SEODiff Score
Comprehensive search visibility assessment
Below average — Traditional SEO (27) has the most room for improvement.
🎯 Top Fix: Add Organization + WebSite JSON-LD → +5–8 pts
🔬 Automated SEODiff Assessment · Snapshot: Mar 18, 2026 · 📋 API
📈 ACRI Trend 4 snapshots
Mar 6 Mar 18
🔔 Recent AI Indexing Activity
🔄 Mar 18 Content change detected
Does your site score higher than marseille.fr?
Run the same 40-signal audit on your own domain — free, instant results.
Scan Your Site Free →
🧮 Score Transparency — How is this calculated?
🛡️ Traditional SEO (25% weight)27 × 0.25 = 6.8
🤖 AI Readiness / GEO (40% weight)85 × 0.40 = 34.0
⚡ Performance (20% weight)46 × 0.20 = 9.2
🏗️ Architecture & Trust (15% weight)54 × 0.15 = 8.1
Weighted sum = 6.8 + 34.0 + 9.2 + 8.1
Global SEODiff Score = 58 (D)
📊 ACRI Sub-Scores (AI Readiness Detail)
100
Bot Access
avg 92
100
Rendering
avg 93
93
Structure
avg 35
0
Schema
avg 9
70
Tech Stack
avg 63
🔀
Visibility Delta: Google vs AI
Google (Tranco)
Top 7%
Rank #67331
Aligned
Gap
AI (ACRI)
Top 5%
Score 81/100

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

Why marseille.fr ranks here

Tech stackDrupal
Industryecommerce
RenderingSSR
Schema coverage0 blocks
Token bloat3.8×

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

27/100 25 % of Global Score 🟢 High Confidence

📝 Title Tag

28 chars
Too short

Optimal range: 30–60 characters for SERP display.

📋 Meta Description

0 chars
Missing

Optimal range: 120–160 characters for snippet control.

🔤 Heading Hierarchy

  • ✗ Exactly 1 <h1> tag — found 2
  • ✓ Has <h2> headings — found 8
  • ✗ <h2> not before <h1>

🔍 Indexability

  • ✓ Canonical tag present → https://www.marseille.fr/
  • ✓ No noindex directive
  • ✓ Meta viewport set
  • ✓ HTML lang attribute → fr
  • ➖ 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

85/100 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 ecommerce sector, 24sevenmegastore.com (ACRI: 89) 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 →
marseille.fr
69
Your ACRI Score
89
Industry Peer ACRI
AI models prioritize pages with strong semantic structure and schema coverage. 24sevenmegastore.com has schema coverage of 4 blocks and uses Django. 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 0%
0% — Safe 50% 100% — Risk
Status Server-Side Rendered (Safe)
Rendering Type SSR

📊 Structure & Information Density Docs

Structure Grade 93/100 — Excellent
Structured Elements 752 elements (752 lists, 0 rows, 0 headers)
Total Words2894
Raw Density26.0%

🏷️ 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

73
AI Extractability
Medium
Crawl Cost
None
Blocklist Risk
Extractability73/100 — AI models can easily extract answers from this page
Crawl CostMedium (50/100) — moderate for AI crawlers to process
Blocklist RiskNone — 0 of 5 AI crawlers blocked

Token Bloat Research

26%
🗑️ 74%
Useful Content (110.0 KB)Bloat (306.6 KB)
Token Bloat Ratio3.8× — Lean

Multimodal Readiness

Visual Context5% Optimized for Vision
Image Alt Coverage6 / 117 images have alt text

TDM Rights

TDM-Reservation HeaderNot set
X-Robots-Tag: noaiNot set
💡Only 5% of images have alt text. Add descriptive alt attributes so multimodal AI (ChatGPT Vision) can understand your images.

🔥 Structural Entropy Check Research

30 Entropy
Poor Token Bloat: High
Noise Ratio: 73.6% · SNR: 0.36 · Signal: 28160 / Noise: 78481 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 marseille.fr 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
This tool allows users to submit data requests to the City of Marseille.
Target Audience
City residents, researchers, and data enthusiasts.
Pricing Model
⚠ SEMANTIC VOID
🏆 Competitive Moat
Direct access to Marseille's OpenData portal.
📊 Content Depth
2/10
⚡ Key Pain Points
• Lack of clear call to action
• Missing schema markup
Analyzed by SEODiff AI · 2026-03-03

🔧 Tech Stack

FrameworkDrupal
AI-Readiness Score70/100
Serverno-server
CDN
HTTP Status200
Load Time882 ms
Raw HTML Size416.6 KB
Visible Text Size110.0 KB

Performance & Speed

46/100 20 % of Global Score 🟢 High Confidence

⏱️ Time to First Byte

882 ms
Slow — bots may time out or deprioritise

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

📦 Page Weight

3261
DOM nodes
417 KB
HTML payload
Heavy page — consider reducing DOM complexity

🗄️ Cache & CDN

  • ✓ Cache-Control header → max-age=3600, public
  • ✗ 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

54/100 15 % of Global Score 🟡 Medium Confidence

🗺️ Sitemap & Robots

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

🔗 Linking

681
internal links
38
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 → fr
  • ✓ 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 69/100. Reach 80+ to unlock the green "AI-Verified" badge. Fix the issues below to improve your score.

AI-Verified badge for marseille.fr
Pending Audit — score below 80 threshold
<a href="https://seodiff.io/radar/domains/marseille.fr" rel="noopener"><img src="https://seodiff.io/api/v1/badge?domain=marseille.fr" 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 63 pages · Deep-10

Homepage ACRI
69
Single-page score
-15
Moderate hidden bloat
Δ delta
Site-Wide ACRI
54
Avg across 63 pages · Range 0–67
🔍
Hidden Bloat Detected

Homepage scores 69, but internal pages average only 54 — a -15-point gap. Blogs, docs, and legacy content are dragging down AI readability site-wide.

Topical Cohesion
7%
Topical Drift
TF-IDF cosine similarity
Total Words
47942
Avg Bloat
186.2×
Page Type ACRI Token Bloat Words Status
https://www.marseille.fr/mairie/actualites/soutien-sauvetage-sos-mediterranee
La Ville de Marseille renforce son soutien aux opérations de sauvetage de SOS Méditerranée | Ville de Marseille
pricing 67 104.6× 779 💰 Pricing
https://www.marseille.fr/education/petite-enfance/projets-educatifs
Projets éducatifs et innovation | Ville de Marseille
pricing 67 69.9× 1210 💰 Pricing
https://www.marseille.fr/ecoles/nouvelles-ecoles/toros-marter
Groupe scolaire Denise Toros-Marter | Ville de Marseille
pricing 67 166.5× 515 💰 Pricing
https://www.marseille.fr/education/petite-enfance/la-vie-des-creches-municipales
Fonctionnement des crèches municipales | Ville de Marseille
pricing 67 56.9× 1513 💰 Pricing
https://www.marseille.fr/environnement/actualites/le-jour-de-la-nuit
"Le Jour de la Nuit", venez observer la biodiversité nocturne samedi 11 octobre | Ville de Marseille
pricing 67 85.0× 977 💰 Pricing
https://www.marseille.fr/sante/actualites/jeunesse-et-ecrans
Jeunesse et écrans : un colloque pour comprendre les enjeux de santé | Ville de Marseille
pricing 67 136.2× 596 💰 Pricing
https://www.marseille.fr/international/actualites/akimatsuri-fete-automne
Les 4 et 5 octobre, rendez-vous à Akimatsuri, la Fête de l'automne japonaise, au parc Borély | Ville de Marseille
pricing 67 113.2× 749 💰 Pricing
https://www.marseille.fr/conciliation-et-mediation/defenseur-des-droits
Le défenseur des droits | Ville de Marseille
pricing 67 102.7× 798 💰 Pricing
https://www.marseille.fr/environnement/parcs-et-jardins-du-3e-arrondissement
Parcs et jardins du 3e arrondissement | Ville de Marseille
pricing 67 73.8× 1166 💰 Pricing
https://www.marseille.fr/environnement/parcs-et-jardins-du-16e-arrondissement
Parcs et jardins du 16e arrondissement | Ville de Marseille
pricing 67 119.6× 677 💰 Pricing
https://www.marseille.fr/education/actualites/inauguration-ecole-denise-toros-marter
Une nouvelle école inaugurée au nom de Denise Toros-Marter, survivante et militante | Ville de Marseille
pricing 67 78.9× 1070 💰 Pricing
https://www.marseille.fr/ecoles/caisse-des-ecoles
S'ouvrir au monde avec la Caisse des écoles | Ville de Marseille
pricing 67 30.0× 3369 💰 Pricing
https://www.marseille.fr/ecoles/hors-les-murs
Une offre éducative hors les murs consolidée et diversifiée | Ville de Marseille
pricing 67 84.6× 984 💰 Pricing
https://www.marseille.fr/education/petite-enfance/creches-municipales
Demander une place en crèche : mode d’emploi | Ville de Marseille
pricing 67 58.0× 1482 💰 Pricing
https://www.marseille.fr/mairie/actualites/conseil-de-marseille-vendredi-20-septembre-2024
Conseil de Marseille : revoyez la séance du vendredi 20 septembre | Ville de Marseille
pricing 67 114.5× 711 💰 Pricing
https://www.marseille.fr/culture/actualites/festival-film-judiciaire
Le Festival du film judiciaire de Marseille revient du 6 au 9 octobre | Ville de Marseille
pricing 67 91.9× 894 💰 Pricing
https://www.marseille.fr/sante/actualites/oh-mes-gates-ecrans
"Oh mes gâtés" : une campagne pour sensibiliser aux risques de la surexposition des écrans | Ville de Marseille
pricing 67 68.1× 1264 💰 Pricing
https://www.marseille.fr/social/actualites/lutte-gaspillage-alimentaire
La Ville de Marseille s'engage contre le gaspillage alimentaire | Ville de Marseille
pricing 67 113.5× 720 💰 Pricing
https://www.marseille.fr/international/actualites/rencontres-cinema
La 2e édition des Rencontres internationales du cinéma a eu lieu en novembre 2025 | Ville de Marseille
pricing 67 48.0× 1816 💰 Pricing
https://www.marseille.fr/environnement/parcs-et-jardins-du-9e-arrondissement
Parcs et jardins du 9e arrondissement | Ville de Marseille
pricing 67 40.8× 2196 💰 Pricing
Showing 20 of 63 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
/environnement/ 18 65 0% 104.8× High JS Bloat
/ecoles/ 13 59 0% 258.3× High JS Bloat
/education/ 7 63 0% 120.3× High JS Bloat
/sports-loisirs/ 3 60 0% 206.1× High JS Bloat
/social/ 3 60 0% 220.7× High JS Bloat
/mairie/ 2 67 0% 109.5× High JS Bloat
/sante/ 2 67 0% 102.2× High JS Bloat
/international/ 2 67 0% 80.6× High JS Bloat
/features/ 1 0 0% 0.0× Low AI Readiness
/about/ 1 0 0% 0.0× Low AI Readiness
/case-studies/ 1 0 0% 0.0× Low AI Readiness
/carte-interactive/ 1 44 0% 1164.6× High JS Bloat
/economie/ 1 57 0% 175.9× High JS Bloat
/culture/ 1 67 0% 91.8× High JS Bloat
/blog/ 1 0 0% 0.0× Low AI Readiness
🔗
Outbound External Citations
0 unique external domains cited across 63 pages
superminot.marseille.fr ×55
dome.marseille.fr ×55
mes-demarches.marseille.fr ×55
palais-des-sports.marseille.fr ×55
troov.com ×55
instagram.com ×55
service-public.fr ×55
mpe-marseille.local-trust.com ×55
🔄 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/marseille.fr

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

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📊 Semantic Share of Voice

How often would an AI cite marseille.fr 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 marseille.fr. 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": "Marseille",
  "url": "https://marseille.fr",
  "logo": "https://marseille.fr/sites/default/files/vdm.png",
  "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": "Marseille",
  "url": "https://marseille.fr",
  "potentialAction": {
    "@type": "SearchAction",
    "target": "https://marseille.fr/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 Marseille?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Add your answer here — describe what Marseille does in 1-2 sentences."
      }
    },
    {
      "@type": "Question",
      "name": "How does Marseille work?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Explain the key features and how users interact with Marseille."
      }
    }
  ]
}
</script>
📈

Projected Impact

ROI EST.

If you apply the patches above, here's the estimated improvement for marseille.fr:

Current Score
81
Projected Score
94
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?
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