freessl.cn
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Hosting Provider
IP Address
138.113.91.117
Site Location
🇨🇳 Chinavia tld
Server Location
🇦🇹 Vienna, Austria
ASN
AS54994
Server
Nginx
Performance
Core Web Vitals
Weight
Architecture Stack
Technology Stack
9 Technologies Detected
CSS Frameworks
2Meta Frameworks
1Customer Support
1Web Servers
1SEO Analysis
FreeSSL.cn - 一个提供免费HTTPS证书申请的网站
Let's Encrypt证书,TrustAsia证书,HTTPS免费证书,SSL免费证书,服务器证书,Free SSL,Free HTTPS,.app 域名,.app免费证书
Recommended: 50-60 chars (~190px / 580px)
Recommended: 120-160 chars
Issues (2)
- • Missing H1 tag — every page should have exactly one H1
- • Most images missing alt text (10/16) — critical for accessibility and SEO
14 issues found
Upgrade to view detailsCrawlability
Type: standard
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
75d
Certificate Details
Type
Domain Validated (DV)
Certificate Authority
TrustAsia Technologies, Inc.
Key Algorithm
RSA (2048 bit)
Signature
SHA-256 with RSA
TLS Version
TLSv1.3
HTTP Protocol
HTTP/2
Valid From
11.07.2025
Valid Until
08.08.2026
OCSP Stapling
Enabled
Subject Alternative Names (2)
SHA-256 Fingerprint
BF:10:67:EC:42:3E:34:E3:61:53:77:3D:CA:84:83:0B:B6:E0:BA:A7...
Top Recommendations
Security recommendation preview
HTTP Headers
Developer Console
Email Infrastructure
Custom Mail Server
Score
0
Domain Information
freessl.cn
Privacy & Compliance
Mobile Compatibility
Viewport & Responsive Test
width=device-width, initial-scale=1- •Mobile compatibility recommendation preview...
Typography & Readability
Segoe UI + -apple-system
16px · LH 1.25
1:1 min contrast
System fonts
Heading Font
Segoe UI
Body Font
-apple-system
Contrast Ratio
1:1
34 issuesReading Comfort
~41 CPL
Narrow lines✅ Excellent readability: 16px body text is ideal for all devices.
⚠️ Tight line spacing (1.25). Increase to 1.4–1.6 for better readability.
✅ Easy to read: Flesch score 79/100 — accessible to general audiences.
⚠️ Partial contrast: 34 elements below WCAG AA threshold (min 1.0:1).
❌ Missing H1: Every page should have exactly one H1 element for SEO and accessibility.
✅ System fonts: Zero font loading delay — best possible LCP impact.
Color Palette
5 unique colorsBusiness & Marketing Stack
3 Tools Detected
2
Categories
3
Total Tools
0
Enterprise
1
Mid-Market
Assessment: Well-developed marketing technology stack
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Scripts & Styles
14 Resources
Top Script Sources
Website Identity
freessl.cn
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Historical Analysis & Change Tracking