lobste.rs 26 F
🛡️ SEO 0 🤖 GEO 69 ⚡ Perf 49 🏗️ Arch 100

lobste.rs — Global SEODiff Score 26/100

lobste.rs
📊

With only 15/100 on the AI-Readiness Index, lobste.rs is at severe risk of being overlooked by AI-powered search and answer engines. Compared to other developer sites (avg score: 58), lobste.rs is trailing the benchmark, indicating room for competitive improvement. The low ghost ratio (0%) confirms that what crawlers see matches what users see — a hallmark of strong SSR implementation. A tight 4.7× 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. Complete AI crawler restriction cuts this domain off from the growing AI search ecosystem entirely.

26
F — Global SEODiff Score
Comprehensive search visibility assessment
Critical gaps across the board. Start with Traditional SEO (0).
🎯 Top Fix: Allow GPTBot + ClaudeBot in robots.txt → lift the score cap
🔬 Automated SEODiff Assessment · Snapshot: Feb 28, 2026 · 📋 API
📈 ACRI Trend 4 snapshots
Feb 23 Feb 28
🔔 Recent AI Indexing Activity
No recent changes detected by adaptive crawler.
Does your site score higher than lobste.rs?
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)0 × 0.25 = 0.0
🤖 AI Readiness / GEO (40% weight)69 × 0.40 = 27.6
⚡ Performance (20% weight)49 × 0.20 = 9.8
🏗️ Architecture & Trust (15% weight)100 × 0.15 = 15.0
Weighted sum = 0.0 + 27.6 + 9.8 + 15.0
⚠️ Fatal multiplier: All major AI bots blocked → ×0.5
Global SEODiff Score = 26 (F)
🚫
Gatekeeper Rule: Score cannot exceed 15. Both GPTBot and ClaudeBot are blocked in robots.txt. No major AI assistant can cite this site. Allow at least one major AI crawler to lift the cap. See Bot Access →
📊 ACRI Sub-Scores (AI Readiness Detail)
0
Bot Access
avg 92
100
Rendering
avg 93
37
Structure
avg 36
0
Schema
avg 9
70
Tech Stack
avg 63
🔀
Visibility Delta: Google vs AI
Google (Tranco)
Top 6%
Rank #61875
+61 pts
Gap
AI (ACRI)
Top 67%
Score 15/100

lobste.rs 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 lobste.rs ranks here

Tech stackRuby on Rails
Industrydeveloper
RenderingSSR
Schema coverage0 blocks
Token bloat4.7×

Fastest improvements

  • Allow GPTBot in robots.txt so AI crawlers can access your pages (see Crawl Access).
  • Allow ClaudeBot (many assistants rely on it) — blocking it often correlates with “AI invisibility.”
  • Add basic Organization and WebSite JSON-LD to fix “0 schema blocks” (see Schema Coverage).
  • Reduce token bloat (navigation/footer/code) so agents reach your main content faster (see Token Bloat).
  • 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

0/100 25 % of Global Score 🟡 Medium Confidence

📝 Title Tag

8 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 0
  • ✗ Has <h2> headings — found 0
  • ✓ <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 — Lobsters
  • ✓ og:description — A computing-focused community centered around link aggregation and discussion.
  • ✓ 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

69/100 40 % of Global Score 🟡 Medium 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 →
lobste.rs
36
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)
Blocked
ClaudeBot (Anthropic)
Blocked
CCBot (Common Crawl)
Blocked
Google-Extended
Blocked
Googlebot
Blocked
💡GPTBot is blocked. To appear in ChatGPT citations, add Allow: / under User-agent: GPTBot in your robots.txt.
💡ClaudeBot is blocked. To be cited by Claude, allow ClaudeBot in robots.txt.

👻 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 37/100 — Low
Structured Elements 25 elements (25 lists, 0 rows, 0 headers)
Total Words619
Raw Density4.0%
💡Low structure score (37/100). Your content appears as a wall of text with few structured HTML elements. You have 25 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

56
AI Extractability
Low
Crawl Cost
Critical
Blocklist Risk
Extractability56/100 — AI models can partially extract answers from this page
Crawl CostLow (30/100) — efficient for AI crawlers to process
Blocklist RiskCritical — 5 of 5 AI crawlers blocked

Token Bloat Research

21%
🗑️ 79%
Useful Content (12.0 KB)Bloat (44.7 KB)
Token Bloat Ratio4.7× — Lean

Multimodal Readiness

Visual Context100% Optimized for Vision
Image Alt Coverage25 / 25 images have alt text

TDM Rights

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

🔥 Structural Entropy Check Research

8 Entropy
Poor Token Bloat: High
Noise Ratio: 78.8% · SNR: 0.27 · Signal: 3071 / Noise: 11448 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

FrameworkRuby on Rails
AI-Readiness Score70/100
Server
CDN
HTTP Status200
Load Time5695 ms
Raw HTML Size56.7 KB
Visible Text Size12.0 KB

Performance & Speed

49/100 20 % of Global Score 🟢 High Confidence

⏱️ Time to First Byte

5695 ms
Slow — bots may time out or deprioritise

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

📦 Page Weight

762
DOM nodes
57 KB
HTML payload
Lean page — fast for bots and users

🗄️ Cache & CDN

  • ✓ Cache-Control header → max-age=0, private, must-revalidate
  • ✗ 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://lobste.rs/sitemap.xml.gz
  • ✗ Googlebot allowed
  • ✗ GPTBot allowed
  • ✗ ClaudeBot allowed

🔗 Linking

202
internal links
72
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 36/100. Reach 80+ to unlock the green "AI-Verified" badge. Fix the issues below to improve your score.

AI-Verified badge for lobste.rs
Pending Audit — score below 80 threshold
<a href="https://seodiff.io/radar/domains/lobste.rs" rel="noopener"><img src="https://seodiff.io/api/v1/badge?domain=lobste.rs" 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 56 pages · Deep-10

Homepage ACRI
36
Single-page score
+1
Consistent readability
Δ delta
Site-Wide ACRI
37
Avg across 56 pages · Range 26–82
Topical Cohesion
3%
Topical Drift
TF-IDF cosine similarity
Total Words
9800
Avg Bloat
29.4×
Page Type ACRI Token Bloat Words Status
https://lobste.rs/about
About | Lobsters
pricing 82 2.0× 2485 💰 Pricing
https://lobste.rs/chat
Chat | Lobsters
other 82 2.8× 543
https://lobste.rs/comments
Newest Comments | Lobsters
pricing 82 4.5× 1735 💰 Pricing
https://lobste.rs/s/bkeYe9/about_lobsters
About Lobsters | Lobsters
about 77 7.2× 767
https://lobste.rs/s/PnJGDf/cycles_cells_platters_empirical
Cycles, Cells and Platters: An Empirical Analysis of Hardware Failures on a Million Consumer PCs | Lobsters
other 67 7.0× 234
https://lobste.rs/newest
Newest Stories | Lobsters
other 64 19.0× 625
https://lobste.rs/recent
Recent Stories | Lobsters
other 64 19.0× 619
https://lobste.rs/s/tELHK8/tarsnap_outage_post_mortem
Tarsnap outage post-mortem | Lobsters
other 57 10.2× 217
https://lobste.rs/s/sX82OC/infiltrate_vault_security_analysis
Infiltrate the Vault: Security Analysis and Decryption of Lion Full Disk Encryption | Lobsters
trust 57 10.1× 269
https://lobste.rs/s/ZHq5bA/first_case_ios_malware_reach_app_store
First case of iOS malware to reach the App Store | Lobsters
other 54 14.6× 255
https://lobste.rs/s/i2mEkt/grumpy_bsd_guy_keeping_your_openbsd
That grumpy BSD guy: Keeping Your OpenBSD System In Trim: A Works For Me Guide | Lobsters
other 47 15.0× 106
https://lobste.rs/s/VTHAs9/php_python_persuasion
PHP, Python and Persuasion | Lobsters
pricing 44 13.7× 133 💰 Pricing
https://lobste.rs/s/xjolni/trust
Trust | Lobsters
trust 39 29.3× 51
https://lobste.rs/s/9va9PU/british_airways_will_google_passengers
British Airways Will Google Passengers 'To Put A Face To The Name' | Lobsters
other 39 25.9× 60
https://lobste.rs/s/IDcGb3/vim_adventures
VIM Adventures | Lobsters
other 39 22.7× 71
https://lobste.rs/s/I2z0hP/less_is_exponentially_more_rob_pike
Less is exponentially more (Rob Pike) | Lobsters
other 39 27.2× 51
https://lobste.rs/s/wX8dod/twitter_loses_occupy_wall_street_case
Twitter Loses ‘Occupy Wall Street’ Case, Forced To Hand Over User Info | TPM Idea Lab | Lobsters
other 39 20.7× 75
https://lobste.rs/s/Am2omv/cern_observes_new_particle_consistent
CERN observes new particle consistent with Higgs boson | Lobsters
blog 39 27.4× 65
https://lobste.rs/s/SoyNls/emulating_usb_devices_with_python
Emulating USB Devices with Python | Lobsters
other 39 29.6× 52
https://lobste.rs/s/9mgO3Z/easy_6502
Easy 6502 | Lobsters
other 39 26.3× 76
Showing 20 of 56 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
/s/ 51 34 0% 31.3× High JS Bloat
/recent/ 1 64 0% 19.0× High JS Bloat
/newest/ 1 64 0% 19.0× High JS Bloat
/about/ 1 82 0% 2.0× Healthy
/chat/ 1 82 0% 2.9× Healthy
/comments/ 1 82 0% 4.5× Healthy
🔗
Outbound External Citations
0 unique external domains cited across 56 pages
web.archive.org ×53
ghostarchive.org ×52
github.com ×6
undeadly.org ×3
cdn.openai.com ×2
theatlantic.com ×2
blog.tohojo.dk ×2
aws.amazon.com ×2
🔄 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/lobste.rs

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

🔗 Similar developer Sites

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

Domain ACRI AI Score Tech Stack Token Bloat Schema
lobste.rs (this site) 36 15 Ruby on Rails 4.7× 0
developer.travis-ci.com 61 80 Custom / Proprietary 5.0× 0 Compare →
pomoc.sellintegro.pl 61 84 Hugo 3.7× 0 Compare →
gentoo.org 61 75 Express 3.6× 0 Compare →
sport.univ-lille.fr 61 73 TYPO3 3.2× 0 Compare →
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🩹

Remediation Patches

COPY-PASTE

Auto-generated code fixes tailored to lobste.rs. 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": "Lobste",
  "url": "https://lobste.rs",
  "logo": "https://lobste.rs/touch-icon-144.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": "Lobste",
  "url": "https://lobste.rs",
  "potentialAction": {
    "@type": "SearchAction",
    "target": "https://lobste.rs/search?q={search_term_string}",
    "query-input": "required name=search_term_string"
  }
}
</script>
Allow GPTBot in robots.txt
High Impact ⏱ 2 min
GPTBot is blocked — your content cannot appear in ChatGPT citations. Add this to your robots.txt:
text
User-agent: GPTBot
Allow: /

User-agent: ChatGPT-User
Allow: /
Allow ClaudeBot in robots.txt
Medium Impact ⏱ 2 min
ClaudeBot is blocked — Claude cannot cite your content. Many AI assistants rely on it.
text
User-agent: ClaudeBot
Allow: /

User-agent: anthropic-ai
Allow: /
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 Lobste?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Add your answer here — describe what Lobste does in 1-2 sentences."
      }
    },
    {
      "@type": "Question",
      "name": "How does Lobste work?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Explain the key features and how users interact with Lobste."
      }
    }
  ]
}
</script>
📈

Projected Impact

ROI EST.

If you apply the patches above, here's the estimated improvement for lobste.rs:

Current Score
15
Projected Score
44
Improvement
+29 pts
Allow GPTBot +8 pts
Allow ClaudeBot +5 pts
Add Organization schema +6 pts
Add WebSite schema +4 pts
Reduce token bloat +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).

Is this your company?

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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