zenn.dev
Scanned URL: https://zenn.dev
77
🔍 SEO Score
10 / 13 checks passed
36
🤖 LLM Readiness
4 / 11 checks passed
64
⚡ Performance
7 / 11 checks passed
📝 Extracted Page Tags
Title Tag
Zenn｜エンジニアのための情報共有コミュニティ
Meta Description
Zennはエンジニアが技術・開発についての知見をシェアする場所です。本の販売や、読者からのバッジの受付により対価を受け取ることができます。
H1 Heading
None found
Canonical URL
https://zenn.dev/
🔍 SEO Audit
77/100❌ Title Tag
Length: 24 chars (Ideal: 30-60).
✅ Meta Description
Length: 69 chars (Ideal: 50-160).
❌ H1 Tag
Found 0 H1 tags. Exactly 1 is recommended.
✅ Canonical URL
Canonical URL is set.
✅ Open Graph Tags
Found 6 OG properties (4+ recommended).
✅ Indexability
Page allows indexing.
✅ Mobile Viewport
Viewport meta tag present.
✅ Image Alt Text
0 of 1 images missing alt.
✅ Sitemap
Sitemap declared.
❌ Heading Hierarchy
Missing H1 or H2 tags.
✅ Internal Links
Found 23 internal links.
✅ HSTS Security
HSTS header present.
✅ HTTPS
Loads securely over HTTPS.
🤖 LLMO
36/100❌ Structured Data (JSON-LD)
No JSON-LD found.
❌ Schema Entities
No schema entities.
❌ FAQ Schema
Missing FAQ schema.
❌ Contextual Summary
Description too short for AI context.
❌ E-E-A-T (Author)
No author meta or schema.
❌ Organisation Schema
Missing Organization schema.
❌ Breadcrumb Schema
Missing BreadcrumbList.
✅ AI Crawler Access
AI agents not blocked.
✅ Language Declaration
Language set to 'ja'.
✅ Semantic Structure
Uses <main> or <article>.
✅ Entity Verification Links
Social/publisher profiles linked.
⚡ Performance
64/100Network Waterfall (Total: 1006ms)
- DNS: 253ms
- Connect: 261ms
- TTFB: 919ms
- Download: 87ms
❌ Time to First Byte (TTFB)
TTFB: 919ms (Target: < 600ms).
✅ HTML Payload Size
Raw HTML: 38.3KB (Target: < 150KB).
✅ Text Compression
Compression enabled (gzip).
✅ Cache Policies
Cache-Control headers set.
✅ CDN Usage
Edge delivery detected.
✅ Secure Delivery (HTTPS)
Served securely.
❌ Modern Protocol
Using HTTP/1.1.
❌ Native Lazy Loading
No lazy loading detected.
❌ Minified Assets
No minified assets linked.
✅ Preload / Preconnect Hints
Resource hints found.
✅ Character Set
UTF-8 declared.
🛡️ Security & Blacklist
Clean✅ Domain is clean.
⚙️ Technologies
E-Commerce
Magento
Analytics & Tracking
Google AnalyticsGoogle Tag Manager
JavaScript
Next.js
Infrastructure & CDN
Cloudflare
📋 WHOIS
WHOIS unavailable.
🔗 DNS Records
| Type | Value |
|---|---|
| A | 172.67.72.220 |
| A | 104.26.15.203 |
| A | 104.26.14.203 |
| MX | alt3.aspmx.l.google.com |
| MX | alt4.aspmx.l.google.com |
| MX | alt1.aspmx.l.google.com |
| MX | alt2.aspmx.l.google.com |
| MX | aspmx.l.google.com |
| TXT | google-site-verification=udMf6x_Z0J82_tdCFgcpik-TNvh-LZk15yyd7oD2PCo |
| TXT | v=spf1 include:_spf.google.com ~all |
| TXT | google-site-verification=BViXpCnxS81SVVVCJ9B2q0122hOaPKM8QePvwyYOJaA |
| NS | gabriel.ns.cloudflare.com |
| NS | susan.ns.cloudflare.com |