happymail.co.jp achieves a 76/100 on the AI-Crawler Reality Index, reflecting above-average readiness for AI-driven discovery. In the infrastructure sector, happymail.co.jp outperforms the average (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. The token bloat ratio sits at a lean 2.0×, meaning the ratio of code to visible content is efficient — crawlers spend their token budget on actual information. The site includes 2 schema blocks, providing adequate structured data for basic entity recognition. The site maintains an open-door policy for AI crawlers — GPTBot, ClaudeBot, and other major agents are all allowed.
🧮 Score Transparency — How is this calculated?
📊 ACRI Sub-Scores (AI Readiness Detail)
happymail.co.jp 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 happymail.co.jp ranks here
Fastest improvements
- You’re already in decent shape — the next moat is monitoring drift over time.
- 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
48/100 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 7
- ✓ Has <h2> headings — found 7
- ✓ <h2> not before <h1>
🔍 Indexability
- ✓ Canonical tag present →
https://happymail.co.jp/ - ✓ No noindex directive
- ✓ Meta viewport set
- ✓ HTML lang attribute →
ja - ✗ Hreflang tags
- ✓ Googlebot allowed by robots.txt
🌐 Social / OpenGraph
- ✓ og:title — 出会い・恋愛のハッピーメール【公式】｜彼氏・彼女がほしい貴方に贈る日本最大級のマッチングアプリ・マッチングサイト
- ✓ og:description — ハッピーメール（ハピメ）は登録無料の優良出会いマッチングアプリ・マッチングサイトです。趣味友から恋活・婚活まで幅広い出会いを提供。スマホ・アプリにも対応しているから初めての方でも安心してご利用頂けます。25年の運営実績で累計会員数3,500万以上、全国47都道府県のどこからでも素敵な出会いを見つけることができます。
- ✓ og:image — preview
- ✓ twitter:card — summary_large_image
📐 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
81/100 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
📊 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
53/100 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
- ✗ 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 🟡 Medium 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 → ja
- ✓ 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 60/100. Reach 80+ to unlock the green "AI-Verified" badge. Fix the issues below to improve your score.
<a href="https://seodiff.io/radar/domains/happymail.co.jp" rel="noopener"><img src="https://seodiff.io/api/v1/badge?domain=happymail.co.jp" 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 107 pages · Deep-10
| Page | Type | ACRI | Token Bloat | Words | Status |
|---|---|---|---|---|---|
| other | 64 | 159.6× | 555 | ✓ | |
| blog | 60 | 36.2× | 411 | ✓ | |
| other | 60 | 39.1× | 253 | ✓ | |
| other | 60 | 41.8× | 254 | ✓ | |
| other | 60 | 42.3× | 300 | ✓ | |
| other | 60 | 57.7× | 235 | ✓ | |
| other | 60 | 33.7× | 206 | ✓ | |
| social-proof | 60 | 27.8× | 276 | ✓ | |
| other | 60 | 37.8× | 208 | ✓ | |
| legal | 60 | 50.8× | 204 | ✓ | |
| other | 57 | 153.6× | 493 | ✓ | |
| support | 55 | 54.5× | 149 | ✓ | |
| support | 55 | 59.5× | 101 | ✓ | |
| support | 55 | 63.6× | 116 | ✓ | |
| support | 55 | 65.2× | 103 | ✓ | |
| support | 55 | 60.7× | 113 | ✓ | |
| auth | 54 | 298.1× | 240 | ✓ | |
| other | 54 | 198.8× | 373 | ✓ | |
| product | 54 | 265.5× | 267 | ✓ | |
| about | 50 | 44.9× | 139 | ✓ | |
| pricing | 50 | 44.2× | 185 | 💰 Pricing | |
| support | 50 | 58.1× | 115 | ✓ | |
| support | 50 | 71.1× | 71 | ✓ | |
| support | 50 | 66.5× | 69 | ✓ | |
| support | 50 | 55.5× | 90 | ✓ | |
| support | 50 | 70.4× | 74 | ✓ | |
| other | 50 | 53.8× | 113 | ✓ | |
| other | 50 | 50.0× | 142 | ✓ | |
| other | 50 | 50.6× | 104 | ✓ | |
| legal | 50 | 64.0× | 104 | ✓ | |
| other | 50 | 44.8× | 139 | ✓ | |
| other | 50 | 44.5× | 144 | ✓ | |
| about | 50 | 62.3× | 105 | ✓ | |
| other | 50 | 53.6× | 96 | ✓ | |
| blog | 50 | 59.3× | 133 | ✓ | |
| other | 50 | 63.7× | 110 | ✓ | |
| other | 50 | 41.6× | 131 | ✓ | |
| other | 50 | 59.1× | 83 | ✓ | |
| other | 50 | 63.9× | 77 | ✓ | |
| other | 50 | 58.8× | 112 | ✓ | |
| other | 50 | 46.0× | 166 | ✓ | |
| other | 50 | 65.2× | 76 | ✓ | |
| other | 50 | 69.0× | 68 | ✓ | |
| product | 50 | 68.9× | 68 | ✓ | |
| other | 50 | 71.2× | 68 | ✓ | |
| other | 50 | 67.7× | 102 | ✓ | |
| other | 50 | 67.3× | 71 | ✓ | |
| other | 50 | 71.5× | 64 | ✓ | |
| other | 50 | 60.0× | 93 | ✓ | |
| other | 50 | 62.0× | 92 | ✓ | |
| other | 50 | 67.4× | 72 | ✓ | |
| other | 50 | 62.6× | 94 | ✓ | |
| other | 50 | 60.9× | 86 | ✓ | |
| other | 50 | 54.0× | 98 | ✓ | |
| other | 50 | 69.0× | 70 | ✓ | |
| other | 50 | 68.5× | 77 | ✓ | |
| other | 50 | 56.9× | 94 | ✓ | |
| other | 50 | 62.4× | 77 | ✓ | |
| other | 50 | 34.7× | 171 | ✓ | |
| other | 50 | 46.7× | 145 | ✓ | |
| other | 50 | 58.1× | 87 | ✓ | |
| other | 50 | 59.6× | 103 | ✓ | |
| other | 50 | 49.0× | 121 | ✓ | |
| other | 50 | 49.8× | 117 | ✓ | |
| other | 50 | 53.4× | 130 | ✓ | |
| other | 50 | 51.1× | 107 | ✓ | |
| other | 50 | 48.5× | 136 | ✓ | |
| other | 50 | 51.4× | 116 | ✓ | |
| about | 50 | 52.9× | 161 | ✓ | |
| other | 50 | 52.5× | 109 | ✓ | |
| other | 50 | 47.0× | 122 | ✓ | |
| other | 50 | 69.8× | 92 | ✓ | |
| other | 50 | 53.9× | 117 | ✓ | |
| other | 50 | 47.9× | 119 | ✓ | |
| other | 50 | 65.3× | 78 | ✓ | |
| auth | 50 | 66.0× | 75 | ✓ | |
| other | 50 | 63.3× | 92 | ✓ | |
| other | 50 | 40.7× | 149 | ✓ | |
| other | 50 | 64.6× | 82 | ✓ | |
| other | 50 | 64.5× | 86 | ✓ | |
| other | 50 | 64.6× | 82 | ✓ | |
| other | 50 | 64.3× | 82 | ✓ | |
| other | 50 | 65.2× | 81 | ✓ | |
| other | 50 | 64.5× | 82 | ✓ | |
| other | 50 | 66.4× | 82 | ✓ | |
| other | 50 | 53.6× | 113 | ✓ | |
| other | 50 | 57.0× | 103 | ✓ | |
| other | 50 | 67.7× | 84 | ✓ | |
| other | 50 | 52.5× | 121 | ✓ | |
| other | 50 | 69.1× | 80 | ✓ | |
| other | 50 | 58.7× | 107 | ✓ | |
| other | 50 | 60.6× | 82 | ✓ | |
| other | 50 | 58.7× | 86 | ✓ | |
| other | 50 | 59.3× | 87 | ✓ | |
| other | 50 | 58.0× | 87 | ✓ | |
| other | 50 | 55.2× | 92 | ✓ | |
| other | 50 | 55.3× | 92 | ✓ | |
| other | 50 | 55.4× | 92 | ✓ | |
| other | 50 | 66.6× | 72 | ✓ | |
| trust | 50 | 65.3× | 75 | ✓ | |
| other | 50 | 51.7× | 125 | ✓ | |
| other | 50 | 50.0× | 125 | ✓ | |
| other | 50 | 53.0× | 117 | ✓ | |
| other | 50 | 50.6× | 122 | ✓ | |
| other | 50 | 49.6× | 131 | ✓ | |
| other | 50 | 53.3× | 117 | ✓ | |
| other | 49 | 40.8× | 212 | ✓ |
instagram.com
×105
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/happymail.co.jpGet your free API key — 100 requests/month included.
🔗 Similar infrastructure Sites
Domains with a similar tech stack, industry, and AI readiness profile to happymail.co.jp. Compare side-by-side.
| Domain | ACRI | AI Score | Tech Stack | Token Bloat | Schema | |
|---|---|---|---|---|---|---|
| happymail.co.jp (this site) | 60 | 76 | Custom / Proprietary | 2.0× | 2 | — |
| librerialuces.com | 60 | 68 | Custom / Proprietary | 2.0× | 2 | Compare → |
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| esanj.ir | 60 | 73 | Custom / Proprietary | 2.1× | 2 | Compare → |
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| actieforum.com | 60 | 73 | Custom / Proprietary | 2.1× | 2 | Compare → |
Remediation Patches
COPY-PASTEAuto-generated code fixes tailored to happymail.co.jp. 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": "WebSite",
"name": "Co",
"url": "https://happymail.co.jp",
"potentialAction": {
"@type": "SearchAction",
"target": "https://happymail.co.jp/search?q={search_term_string}",
"query-input": "required name=search_term_string"
}
}
</script>
<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 happymail.co.jp:
*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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