With a solid 76/100 ACRI, arena.co.kr is well-positioned for AI search — better than 84% of sites in the Radar. In the developer sector, arena.co.kr outperforms the average (58), suggesting strong competitive positioning in AI search. A ghost ratio of 30% indicates a mixed rendering strategy where core content loads server-side but interactive sections rely on JavaScript. The bloated 19.7× token ratio highlights an urgent need to clean up non-content markup, scripts, and navigation clutter. The complete absence of JSON-LD schema is a missed opportunity: even basic Organization markup would improve how AI crawlers understand this domain. All major AI bot user-agents (GPTBot, ClaudeBot, CCBot, Google-Extended) are permitted by robots.txt, ensuring broad AI crawler access.
🧮 Score Transparency — How is this calculated?
📊 ACRI Sub-Scores (AI Readiness Detail)
arena.co.kr ranks much higher on Google (Tranco Top 50%+) than in AI search (Top 16%). This is the 'Visibility Gap' pattern — implementing the recommendations above can help close the AI gap. ACRI measures technical crawler readiness. Read the methodology →
Why arena.co.kr ranks here
Fastest improvements
- 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.txtfile 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 →
Traditional SEO
41/100 25 % of Global Score 🟢 High Confidence📝 Title Tag
Optimal range: 30–60 characters for SERP display.
📋 Meta Description
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 →
https://arena.co.kr/ - ✓ No noindex directive
- ✓ Meta viewport set
- ✓ HTML lang attribute →
ko - ✓ Hreflang tags
- ✓ Googlebot allowed by robots.txt
🌐 Social / OpenGraph
- ✓ og:title — Beyond The Water. ARENA
- ✓ og:description — Beyond The Water. 아레나코리아 공식홈 | 스포츠를 사랑하는 모두를 위한 글로벌 스포츠 브랜드
- ✓ 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
65/100 40 % of Global Score 🟢 High ConfidenceThis pillar aggregates citation share, hallucination risk, bot access, schema health, and content extractability. The individual diagnostic sections below contribute to this score.
Is AI lying about your brand? This panel measures how likely LLMs are to hallucinate facts when extracting information from your page.
🤖 Bot Access Matrix
👻 Rendering (Ghost Ratio) Docs
📊 Structure & Information Density Docs
🏷️ Schema Health Docs
Schema Coverage Map
📐 AI Efficiency Metrics Docs
Token Bloat Research
Multimodal Readiness
TDM Rights
🔥 Structural Entropy Check Research
🔬 AI-Crawler Simulation
See your website the way AI crawlers do. CSS stripped, structure labeled, content chunked.
Toggle to "AI Agent View" to see what GPTBot, ClaudeBot, and other AI crawlers actually extract from this page.
AI Answer Preview
NEWSee how AI models summarize your site. Left: your actual content. Right: what the LLM extracts and says about you.
🔧 Tech Stack
Performance & Speed
47/100 20 % of Global Score 🟢 High Confidence⏱️ Time to First Byte
Google considers <200 ms "good". AI crawlers may have even shorter timeouts.
📦 Page Weight
DOM nodes
HTML payload
🗄️ Cache & CDN
- ✓ Cache-Control header →
no-store, no-cache, must-revalidate, post-check=0, pre-check=0 - ✗ CDN cache status
- ✗ CDN detected
🔬 Tracker Tax
tracker scripts
third-party domains
token overhead
📐 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
69/100 15 % of Global Score 🟢 High Confidence🗺️ Sitemap & Robots
- ✗ Sitemap declared in robots.txt
- ✓ Googlebot allowed
- ✓ GPTBot allowed
- ✓ ClaudeBot allowed
🔗 Linking
internal links
external links
🔒 Security & Trust
- ✓ HSTS header (Strict-Transport-Security)
- ✗ Content-Security-Policy header
- ✓ HTTP status 200 OK (got 200)
♿ Accessibility Signals
- ✓ HTML lang attribute → ko
- ✓ 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 52/100. Reach 80+ to unlock the green "AI-Verified" badge. Fix the issues below to improve your score.
<a href="https://seodiff.io/radar/domains/arena.co.kr" rel="noopener"><img src="https://seodiff.io/api/v1/badge?domain=arena.co.kr" 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 9 pages · Deep-10
Poorly formatted tables or pricing grids on 3 pages will be split incorrectly during RAG chunking, causing AI models to hallucinate prices and features.
| Page | Type | ACRI | Token Bloat | Words | Status |
|---|---|---|---|---|---|
| pricing | 51 | 240.5× | 251 | ⚠️ RAG Fracture | |
| pricing | 51 | 240.5× | 251 | ⚠️ RAG Fracture | |
| pricing | 51 | 240.5× | 251 | 💰 Pricing | |
| pricing | 51 | 240.5× | 251 | ⚠️ RAG Fracture | |
| pricing | 51 | 240.5× | 251 | 💰 Pricing | |
| pricing | 51 | 240.5× | 251 | 💰 Pricing | |
| pricing | 51 | 240.5× | 251 | 💰 Pricing | |
| pricing | 51 | 240.5× | 251 | 💰 Pricing | |
| pricing | 51 | 240.5× | 251 | 💰 Pricing |
| Path | Pages | Avg ACRI | Ghost % | Bloat | Top Issue |
|---|---|---|---|---|---|
| /about/ | 1 | 51 | 1% | 240.5× | Bot Blocked |
| /features/ | 1 | 51 | 1% | 240.5× | Bot Blocked |
| /blog/ | 1 | 51 | 1% | 240.4× | Bot Blocked |
| /docs/ | 1 | 51 | 1% | 240.4× | Bot Blocked |
| /integrations/ | 1 | 51 | 1% | 240.4× | Bot Blocked |
| /pricing/ | 1 | 51 | 1% | 240.5× | Bot Blocked |
| /products/ | 1 | 51 | 1% | 240.5× | Bot Blocked |
| /contact/ | 1 | 51 | 1% | 240.5× | Bot Blocked |
| /faq/ | 1 | 51 | 1% | 240.4× | Bot Blocked |
instagram.com
×9
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/arena.co.krGet your free API key — 100 requests/month included.
🔗 Similar developer Sites
Domains with a similar tech stack, industry, and AI readiness profile to arena.co.kr. Compare side-by-side.
| Domain | ACRI | AI Score | Tech Stack | Token Bloat | Schema | |
|---|---|---|---|---|---|---|
| arena.co.kr (this site) | 52 | 76 | Custom / Proprietary | 19.7× | 0 | — |
| chezmoi.io | 77 | 80 | Custom / Proprietary | 1.9× | 0 | Compare → |
| smc.eu | 77 | 80 | Custom / Proprietary | 2.7× | 1 | Compare → |
| mods.go.kr | 77 | 80 | Custom / Proprietary | 2.8× | 1 | Compare → |
| traveler.marriott.com | 77 | 90 | WordPress | 17.9× | 1 | Compare → |
| honeybros.com | 77 | 95 | WordPress | 18.2× | 2 | Compare → |
📊 Semantic Share of Voice
How often would an AI cite arena.co.kr 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-PASTEAuto-generated code fixes tailored to arena.co.kr. Copy and paste these into your codebase to improve AI visibility. These patches are mathematically proven to increase extraction accuracy →
<script type="application/ld+json">
{
"@context": "https://schema.org",
"@type": "Organization",
"name": "Co",
"url": "https://arena.co.kr",
"logo": "https://arena.co.kr/web/upload/favicon-ab3d0577644552224a3269880dcfd6b2.ico",
"sameAs": []
}
</script>
<script type="application/ld+json">
{
"@context": "https://schema.org",
"@type": "WebSite",
"name": "Co",
"url": "https://arena.co.kr",
"potentialAction": {
"@type": "SearchAction",
"target": "https://arena.co.kr/search?q={search_term_string}",
"query-input": "required name=search_term_string"
}
}
</script>
<!-- Move inline CSS to external stylesheets --> <link rel="stylesheet" href="/css/main.css"> <!-- Move inline scripts to external files with defer --> <script src="/js/app.js" defer></script> <!-- Remove duplicate navigation blocks --> <!-- Keep only ONE <nav> in the <header> --> <!-- Ensure <main> wraps your primary content --> <main> <!-- Your content here — this is what AI sees first --> </main>
<script type="application/ld+json">
{
"@context": "https://schema.org",
"@type": "FAQPage",
"mainEntity": [
{
"@type": "Question",
"name": "What is Co?",
"acceptedAnswer": {
"@type": "Answer",
"text": "Add your answer here — describe what Co does in 1-2 sentences."
}
},
{
"@type": "Question",
"name": "How does Co work?",
"acceptedAnswer": {
"@type": "Answer",
"text": "Explain the key features and how users interact with Co."
}
}
]
}
</script>
Projected Impact
ROI EST.If you apply the patches above, here's the estimated improvement for arena.co.kr:
*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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