a-shadow.com
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Hosting Provider
IP Address
183.90.240.53
Site Location
🇯🇵 Japanvia ip
Server Location
🇯🇵 Chiyoda City, Japan
ASN
AS131965
Organization
XSERVER Inc.
Server
Nginx
Nameservers
Performance
Core Web Vitals
Weight
Image Optimization
Architecture Stack
Technology Stack
13 Technologies Detected
Analytics
2Advertising
2Libraries
1UI Components
1CSS Frameworks
1Icon Libraries
1Web Servers
1Customer Support
1SEO Analysis
AI技術の悠兵衛システムサポート - システム開発、WEBサイト構築、WEB広告、インターネット、AI(Artificial Inte...
システム開発、WEBサイト構築、WEB広告、インターネット、AI(Artificial Intelligence)を活用したビジネスのお手伝い。
Recommended: 50-60 chars (~547px / 580px)
Recommended: 120-160 chars
Issues (2)
- • Title is too long (91 chars, ~547px). Will be truncated in search results.
- • Most images missing alt text (48/48) — critical for accessibility and SEO
9 issues found
Upgrade to view detailsCrawlability
Type: index
7 URLs
7 sub-sitemaps
6 rules
Sitemap reference found
Local SEO
Local Search Readiness
This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.
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AI & LLM Readiness
AI Bot Access
14/14 accessibleMachine Readability
Structured Data
No SchemaCitation Readiness
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Accessibility
WCAG 2.1 Compliance
- •Accessibility recommendation preview...
Carbon Footprint
SWDM v4 · Eco-Score
- •Carbon footprint recommendation preview...
Security Score
HTTPS
No WAF
42d
Certificate Details
Type
Domain Validated (DV)
Certificate Authority
Let's Encrypt
Key Algorithm
RSA (2048 bit)
Signature
SHA-256 with RSA
TLS Version
TLSv1.3
HTTP Protocol
HTTP/2
Valid From
02.04.2026
Valid Until
01.07.2026
Subject Alternative Names (2)
SHA-256 Fingerprint
35:E4:46:17:C4:0B:DC:3A:65:B9:8C:B5:9C:00:5F:56:ED:B7:E8:02...
Top Recommendations
Security recommendation preview
HTTP Headers
Developer Console
Email Infrastructure
Custom Mail Server
Score
70
MX Records (1)
Domain Information
a-shadow.com
Created
15.02.2001
Expires
15.02.2027
Last Updated
19.12.2025
Registrar
XServer, Inc.
Privacy & Compliance
Mobile Compatibility
Viewport & Responsive Test
width=device-width- •Mobile compatibility recommendation preview...
Typography & Readability
Segoe UI + Verdana
12px · LH 4.83
1.75x ratio
1:1 min contrast
System fonts
Heading Font
Segoe UI
Body Font
Verdana
Contrast Ratio
1:1
9 issuesReading Comfort
~50 CPL
Optimal (45–75)❌ Critical: 12px body text is too small. Minimum 14px, recommend 16px+.
⚠️ Wide line spacing (4.83). 1.4–1.6 is optimal for body text.
✅ Optimal line length: ~50 chars/line (ideal 45–75 CPL).
⚠️ Partial contrast: 9 elements below WCAG AA threshold (min 1.0:1).
❌ Missing H1: Every page should have exactly one H1 element for SEO and accessibility.
✅ Modern fluid typography: clamp() with rem units ensures zoom accessibility (WCAG 1.4.4).
Color Palette
11 unique colorsBusiness & Marketing Stack
2 Tools Detected
2
Categories
2
Total Tools
1
Enterprise
0
Mid-Market
Assessment: Well-developed marketing technology stack
Ad Networks
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Scripts & Styles
18 Resources
Top Script Sources
Website Identity
a-shadow.com
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Historical Analysis & Change Tracking