51wan.com

https://51wan.com· First analyzed 15 May 2026· Updated 15 May 2026

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51wan.com

Mobile

Sponsored

Hosting Provider

Alibaba Cloud

alibabacloud.com

IP Address

39.106.187.108

Site Location

🇨🇳 Chinavia ip

Server Location

🇨🇳 Beijing, China

ASN

AS37963

Organization

Aliyun Computing Co., LTD

Server

Nginx

Nameservers

ns4.dnsv2.com.ns3.dnsv2.com.

Performance

Core Web Vitals

Weight

First Contentful Paint

947 ms10%

Speed Index

1.2 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

8.4 MB

250 requests

Image Optimization

WebP

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Alibaba Cloud

Technology Stack

4 Technologies Detected

Libraries

UI Components

Web Servers

Languages

SEO Analysis

D46/100

Meta Tags8/15

Content12/12

Headings0/8

Technical7/21

E-E-A-T0/7

Images5/7

Links2/5

URL5/5

Social0/5

Freshness0/4

Mobile4/4

Indexability3/3

51wan.com51wan.com

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Title Length27 chars

Recommended: 50-60 chars (~168px / 580px)

Description Length101 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag — every page should have exactly one H1
• Missing viewport meta tag — page may not be mobile-friendly (Google uses mobile-first indexing)

10 issues found

Upgrade to view details

Local SEO

Local Search Readiness

0/100

Poor

15 2

This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

Sponsored

AI & LLM Readiness

F29/100

Bot Access

20/25

Machine Read.

8/25

Schema Data

0/25

Citation

1/25

AI Bot Access

14/14 accessible

AI Search

OAI-SearchBot

PerplexityBot

Claude-SearchBot

Gemini-Deep-Research

DuckAssistBot

Training

GPTBot

ClaudeBot

Google-Extended

Meta-ExternalAgent

Bytespiderinfo

Amazonbot

Applebot-Extended

CCBotinfo

Fetch

ChatGPT-User

Machine Readability

llms.txt

llms-full.txt

Semantic HTML

Heading Hierarchy

nav

Text ratio:10%

Words:1,997

Token eff.:Optimal

Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary

Descriptive Headings

Canonical URL

Open Graph0/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (12)

AI readiness recommendation preview...

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Sponsored

Accessibility

WCAG 2.1 Compliance

Evaluates how accessible your website is for users with disabilities, based on WCAG 2.1 guidelines. Checks images, forms, keyboard navigation, ARIA roles, and color contrast.

77/100

Passed

Critical

Warnings

Images & Alt Text

20/20

Checks if images have descriptive alt text for screen readers and visually impaired users.

Semantic Structure

9/20

Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.

Forms & Inputs

15/15

Verifies form fields have labels, error messages are clear, and inputs are properly associated.

Color & Contrast

15/15

Tests text-to-background color contrast ratios against WCAG AA/AAA minimum requirements.

Keyboard & Focus

9/15

Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).

ARIA & Roles

9/15

Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

3 recommendations

•Accessibility recommendation preview...

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Carbon Footprint

SWDM v4 · Eco-Score

Carbon emissions estimated using the Sustainable Web Design Model v4 (SWDM v4). Factors in data center, network, and device energy across new and returning visitors. Grade thresholds based on HTTP Archive percentiles.

16/100

1.07 g

CO₂e / view

8.4 MB

Page Weight

Cleaner Than

New Visitor

1.22 g

Returning (cached)

610 mg

Annual (10K/mo)

128.1 kg

Emission Segments

Data Center

238 mg

Network

256 mg

Device

573 mg

Resource Breakdown

JavaScript

84.1 KB

Images

8.3 MB

CSS

39.0 KB

HTML

51.6 KB

Green Hosting Not Verified

Alibaba Cloud

8 recommendations

•Carbon footprint recommendation preview...

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A+

Security Score

91%Excellent

Static / Informational

HTTPS

No WAF

35d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

TrustAsia Technologies, Inc.

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/2

Valid From

22.03.2026

Valid Until

19.06.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

www.51wan.com51wan.com

SHA-256 Fingerprint

0F:6E:B2:0D:C4:87:CB:D6:42:FB:72:84:A1:30:E7:B3:0C:C8:B3:0A...

Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

cache-control

🔴 No Cache(no-cache)

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=UTF-8

date

Fri, 15 May 2026 08:45:55 GMT

expires

Fri, 15 May 2026 00:45:55 GMT

last-modified

Fri, 15 May 2026 08:45:55 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

Domain Information

51wan.com

Domain Age

21y 10m

Created

26.06.2004

Expires

26.06.2031

Last Updated

23.09.2025

Registrar

22net, Inc.

DNSSEC

Not Enabled

Mobile Compatibility

Viewport & Responsive Test

Tests how well your website works on mobile devices. Checks viewport configuration, responsive layout, touch targets, font readability, and simulates rendering across different screen sizes.

32/100

Not Mobile Friendly1 breakpoint

Viewport Meta

The viewport meta tag tells mobile browsers how to scale the page. Without it, mobile devices render at desktop width.

Responsive Design

Uses CSS media queries or flexible layouts to adapt content to different screen sizes automatically.

Touch Icons

Apple touch icons and favicons displayed when users add the site to their home screen on mobile devices.

Readable Font Size

Base font size should be at least 16px on mobile to ensure text is readable without zooming.

Relative Units

Using em, rem, %, or vw instead of fixed px values allows content to scale properly across screen sizes.

No H-Scroll Risk

No elements wider than the viewport that would cause horizontal scrolling on mobile devices.

Tap Targets OK

Interactive elements (buttons, links) are at least 48x48px with enough spacing to prevent accidental taps.

No Fixed Widths

No elements with fixed pixel widths that could overflow on smaller screens and break the layout.

3 recommendations

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

Microsoft Yahei

WCAG Partial

56/100

Readability

/30

18/30

14px · LH 1.43

Hierarchy

/20

8/20

WCAG

/25

16/25

1.56:1 min contrast

Performance

/25

14/25

1 font

Heading Font

Microsoft Yahei

Body Font

Microsoft Yahei

Sans14px

Contrast Ratio

1.56:1

7 issues

Reading Comfort

~77 CPL

Wide lines

14px

⚠️ Small text: 14px may strain on mobile. Use ≥16px for WCAG compliance.

✅ Optimal line spacing: 1.43 ratio (ideal range 1.4–1.6).

⚠️ Wide lines: ~77 chars/line. Use max-width: 65ch for comfortable reading.

✅ Easy to read: Flesch score 71/100 — accessible to general audiences.

⚠️ Partial contrast: 7 elements below WCAG AA threshold (min 1.6:1).

✅ Lean font stack: 1 font families keeps load times fast.

Buy on MyFontsFlesch 71

Color Palette

11 unique colors

5.8:1 AA Light

#ffffff

Background· 40.8%

#5d6861

Other· 6.2%

#faf7e3

Accent· 9.5%

#262027

Secondary· 7.3%

#090409

Primary· 7.1%

#a1806d

Secondary· 6.3%

#a5b9af

Secondary· 6.2%

#0a1c33

Accent· 5.4%

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Scripts & Styles

6 Resources

Scripts

Styles

Async

Defer

Top Script Sources

51wan.com(4)

Website Identity

51wan.com

21 years old

Location detected: 🇨🇳 Chinavia ip

22net, Inc.

Sponsored

Last analyzed: 15 May 2026 at 08:46

Historical Analysis & Change Tracking