alstom.com 66 C
🛡️ SEO 42 🤖 GEO 82 ⚡ Perf 52 🏗️ Arch 85

alstom.com — Global SEODiff Score 66/100

alstom.com
📊

alstom.com shows strong AI visibility with an ACRI of 73/100, outperforming 75% of indexed domains. Within the infrastructure vertical, this places alstom.com above the industry average of 57 —, suggesting strong competitive positioning in AI search. Content is delivered server-side, meaning bots and AI agents can parse the full page without executing JavaScript. With a 3.5× 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. Robots.txt grants unrestricted access to the key AI user-agents, which is the strongest starting position for AI visibility.

66
C — Global SEODiff Score
Comprehensive search visibility assessment
Strong foundations, but Traditional SEO (42) is your bottleneck.
🎯 Top Fix: Add Organization + WebSite JSON-LD → +5–8 pts
🔬 Automated SEODiff Assessment · Snapshot: Mar 21, 2026 · 📋 API
📈 ACRI Trend 28 snapshots
Feb 22 Mar 21
🔔 Recent AI Indexing Activity
🔄 Mar 20 Content change detected
🔄 Mar 19 Content change detected
🔄 Mar 16 Content change detected
🔄 Mar 11 Content change detected
Does your site score higher than alstom.com?
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)42 × 0.25 = 10.5
🤖 AI Readiness / GEO (40% weight)82 × 0.40 = 32.8
⚡ Performance (20% weight)52 × 0.20 = 10.4
🏗️ Architecture & Trust (15% weight)85 × 0.15 = 12.8
Weighted sum = 10.5 + 32.8 + 10.4 + 12.8
Global SEODiff Score = 66 (C)
📊 ACRI Sub-Scores (AI Readiness Detail)
100
Bot Access
avg 92
99
Rendering
avg 93
63
Structure
avg 35
0
Schema
avg 9
55
Tech Stack
avg 63
🔀
Visibility Delta: Google vs AI
Google (Tranco)
Top 3%
Rank #25570
+23 pts
Gap
AI (ACRI)
Top 25%
Score 73/100

alstom.com 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 alstom.com ranks here

Tech stackExpress
RenderingSSR
Schema coverage0 blocks
Token bloat3.5×

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

42/100 25 % of Global Score 🟢 High Confidence

📝 Title Tag

34 chars
Good length

Optimal range: 30–60 characters for SERP display.

📋 Meta Description

180 chars
Too long

Optimal range: 120–160 characters for snippet control.

🔤 Heading Hierarchy

  • ✗ Exactly 1 <h1> tag — found 2
  • ✓ Has <h2> headings — found 5
  • ✓ <h2> not before <h1>

🔍 Indexability

  • ✓ Canonical tag present → https://www.alstom.com/
  • ✓ 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

82/100 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 →
alstom.com
61
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 63/100 — Good
Structured Elements 288 elements (288 lists, 0 rows, 0 headers)
Total Words2400
Raw Density12.0%

🏷️ 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

64
AI Extractability
Medium
Crawl Cost
None
Blocklist Risk
Extractability64/100 — AI models can partially 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

28%
🗑️ 72%
Useful Content (84.3 KB)Bloat (209.4 KB)
Token Bloat Ratio3.5× — Lean

Multimodal Readiness

Visual Context13% Optimized for Vision
Image Alt Coverage10 / 75 images have alt text

TDM Rights

TDM-Reservation HeaderNot set
X-Robots-Tag: noaiNot set
💡Only 13% of images have alt text. Add descriptive alt attributes so multimodal AI (ChatGPT Vision) can understand your images.

🔥 Structural Entropy Check Research

38 Entropy
Poor Token Bloat: High
Noise Ratio: 71.3% · SNR: 0.40 · Signal: 21575 / Noise: 53613 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 alstom.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
⚠ SEMANTIC VOID
Target Audience
⚠ SEMANTIC VOID
Pricing Model
⚠ SEMANTIC VOID
Analyzed by SEODiff AI · 2026-03-01

🔧 Tech Stack

FrameworkExpress
AI-Readiness Score55/100
Servercloudflare
CDNcloudflare
HTTP Status200
Load Time791 ms
Raw HTML Size293.7 KB
Visible Text Size84.3 KB

Performance & Speed

52/100 20 % of Global Score 🟢 High Confidence

⏱️ Time to First Byte

791 ms
Slow — bots may time out or deprioritise

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

📦 Page Weight

2251
DOM nodes
294 KB
HTML payload
Moderate weight — acceptable for most scenarios

🗄️ Cache & CDN

  • ✓ Cache-Control header → max-age=300, public, s-maxage=2764800
  • ✓ CDN cache status → DYNAMIC
  • ✓ CDN detected → cloudflare

🔬 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://www.alstom.com/sitemap.xml
  • ✓ Googlebot allowed
  • ✓ GPTBot allowed
  • ✓ ClaudeBot allowed

🔗 Linking

259
internal links
47
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 61/100. Reach 80+ to unlock the green "AI-Verified" badge. Fix the issues below to improve your score.

AI-Verified badge for alstom.com
Pending Audit — score below 80 threshold
<a href="https://seodiff.io/radar/domains/alstom.com" rel="noopener"><img src="https://seodiff.io/api/v1/badge?domain=alstom.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 109 pages · Deep-10

Homepage ACRI
61
Single-page score
-7
Moderate hidden bloat
Δ delta
Site-Wide ACRI
54
Avg across 109 pages · Range 0–67
Topical Cohesion
12%
Topical Drift
TF-IDF cosine similarity
Total Words
48281
Avg Bloat
121.8×
Page Type ACRI Token Bloat Words Status
https://www.alstom.com/press-releases-news/2014/9/pendolino-high-speed-trains-certified-in-poland-for-up-to-250-kmh
Pendolino High Speed trains certified in Poland for up to 250 km/h | Alstom
other 67 86.1× 572
https://www.alstom.com/fr/press-releases-news/2014/9/les-trains-grande-vitesse-pendolino-certifies-pour-circuler-a-une-vitesse-de-250-kmh-en-pologne
Les trains grande vitesse Pendolino certifiés pour circuler à une vitesse de 250 km/h en Pologne | Alstom
pricing 67 70.9× 709 💰 Pricing
https://www.alstom.com/press-releases-news/2014/9/alstom-to-equip-deutsche-bahn-ice-trains-with-its-ertms-signalling-solution
Alstom to equip Deutsche Bahn ICE trains with its ERTMS signalling solution | Alstom
product 67 93.1× 525
https://www.alstom.com/de/press-releases-news/2014/9/alstom-unterzeichnet-erste-absichtserklarungen-uber-den-einsatz-von-neuen-emissionsfreien-schienenfahrzeugen
Alstom unterzeichnet erste Absichtserklärungen über den Einsatz von neuen, emissionsfreien Schienenfahrzeugen | Alstom
pricing 67 60.7× 766 💰 Pricing
https://www.alstom.com/press-releases-news/2014/9/alstom-to-deliver-australias-first-fully-automated-rapid-transit-trains
Alstom to deliver Australias first fully-automated rapid transit trains | Alstom
pricing 67 72.4× 681 💰 Pricing
https://www.alstom.com/fr/press-releases-news/2014/9/alstom-va-livrer-les-premiers-trains-interurbains-rapides-entierement-automatises-daustralie-
Alstom va livrer les premiers trains interurbains rapides entièrement automatisés d’Australie | Alstom
pricing 67 67.5× 742 💰 Pricing
https://www.alstom.com/fr/press-releases-news/2014/9/innotrans2014-alstom-lance-atlas-400-et-500-ses-nouvelles-solutions-ertms-modulables
Alstom lance Atlas 400 et 500, ses nouvelles solutions ERTMS modulables | Alstom
pricing 67 92.2× 543 💰 Pricing
https://www.alstom.com/press-releases-news/2014/10/positive-partington-visit-carrington-power-station
Positive Partington visit Carrington Power Station | Alstom
pricing 67 81.4× 598 💰 Pricing
https://www.alstom.com/press-releases-news/2014/10/new-tram-named-after-nottinghams-boxing-hero
New Tram named after Nottingham's boxing hero | Alstom
pricing 67 78.1× 623 💰 Pricing
https://www.alstom.com/press-releases-news/2014/10/family-activity-gets-funding-from-alstom-and-df
Family Activity gets funding from Alstom and DF | Alstom
pricing 67 93.9× 517 💰 Pricing
https://www.alstom.com/es/press-releases-news/2014/10/indra-y-alstom-espana-instalaran-los-sistemas-de-proteccion-civil-y-seguridad-en-los-tuneles-de-la-variante-de-pajares
Alstom España e Indra instalarán los sistemas de protección civil y seguridad en los túneles de la variante de Pajares | Alstom
other 67 52.4× 879
https://www.alstom.com/fr/press-releases-news/2014/10/alstom-fournira-8-eoliennes-eco-122-supplementaires-a-enerplan-au-bresil
Alstom fournira 8 éoliennes ECO 122 supplémentaires à Enerplan au Brésil | Alstom
pricing 67 97.2× 511 💰 Pricing
https://www.alstom.com/press-releases-news/2014/10/alstom-e-andrade-gutierrez-promovem-curso-de-capacitacao-profissional-para-nova-fabrica-na-bahia
Alstom e Andrade Gutierrez promovem curso de capacitação profissional para nova fábrica na Bahia | Alstom
pricing 67 44.5× 1043 💰 Pricing
https://www.alstom.com/pt/press-releases-news/2014/10/alstom-e-andrade-gutierrez-promovem-curso-de-capacitacao-profissional-para-nova-fabrica-na-bahia
Alstom e Andrade Gutierrez promovem curso de capacitação profissional para nova fábrica na Bahia | Alstom
pricing 67 44.5× 1043 💰 Pricing
https://www.alstom.com/press-releases-news/2014/12/te-plomin-and-alstom-sign-contract-for-the-construction-of-a-selective-catalytic-reduction-scr-plant-for-plomin-2-power-plant
TE Plomin and Alstom sign contract for the construction of a Selective Catalytic Reduction (SCR) plant for Plomin 2 Power Plant | Alstom
pricing 67 59.0× 835 💰 Pricing
https://www.alstom.com/press-releases-news/2014/12/alstom-delivers-the-first-regiolis-train-to-the-poitou-charentes-region-of-france
Alstom delivers the first Régiolis train to the Poitou-Charentes region of France | Alstom
other 67 78.0× 627
https://www.alstom.com/fr/press-releases-news/2014/12/alstom-livre-le-premier-regiolis-a-la-region-poitou-charentes
Alstom livre le premier Régiolis à la région Poitou-Charentes | Alstom
pricing 67 81.6× 607 💰 Pricing
https://www.alstom.com/fr/press-releases-news/2014/12/le-tramway-citadis-dalstom-mis-en-service-sur-la-ligne-t8-en-ile-de-france
Le tramway Citadis d’Alstom mis en service sur la ligne T8 en Ile de France | Alstom
pricing 67 93.8× 527 💰 Pricing
https://www.alstom.com/press-releases-news/2014/11/la-vueltosa-conheca-outro-importante-personagem-nesse-intenso-projeto-
La Vueltosa conheça outro importante personagem nesse intenso projeto | Alstom
legal 67 67.5× 731
https://www.alstom.com/press-releases-news/2014/11/la-vueltosa-conheca-mais-um-importante-personagem-nesse-intenso-projeto-
La Vueltosa conheça mais um importante personagem nesse intenso projeto | Alstom
legal 67 85.5× 575
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
/press-releases-news/ 38 59 0% 124.8× High JS Bloat
/fr/ 21 59 0% 144.4× High JS Bloat
/pt/ 11 62 0% 98.1× High JS Bloat
/se/ 9 52 0% 168.3× High JS Bloat
/no/ 6 52 0% 164.1× High JS Bloat
/es/ 5 61 0% 91.6× High JS Bloat
/ru/ 3 54 0% 126.2× High JS Bloat
/it/ 3 57 0% 205.3× High JS Bloat
/de/ 3 62 0% 87.5× High JS Bloat
/faq/ 1 0 0% 0.0× Low AI Readiness
/blog/ 1 0 0% 0.0× Low AI Readiness
/integrations/ 1 0 0% 0.0× Low AI Readiness
/pricing/ 1 0 0% 0.0× Low AI Readiness
/about/ 1 56 0% 88.1× High JS Bloat
/features/ 1 0 0% 0.0× Low AI Readiness
🔗
Outbound External Citations
0 unique external domains cited across 109 pages
linkedin.com ×102
secure.ethicspoint.eu ×102
station-one.com ×102
alstom.canto.global ×102
fr-fr.facebook.com ×102
youtube.com ×102
instagram.com ×102
foundation.alstom.com ×102
🔄 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/alstom.com

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

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📊 Semantic Share of Voice

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

Projected Impact

ROI EST.

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

Current Score
73
Projected Score
86
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.
Free Deep Audit → GSC Error Guide →