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3839.com

https://3839.com· First analyzed 05 May 2026· Updated 05 May 2026
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3839.com
Desktop screenshot of 3839.com
Mobile screenshot of 3839.com
Mobile

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Hosting Provider

Tencent Cloud
cloud.tencent.com

IP Address

49.233.44.103

Site Location

🇨🇳 Chinavia ip

Server Location

🇨🇳 Beijing, China

ASN

AS45090

Organization

Tencent cloud computing (Beijing) Co., Ltd.

Server

OpenResty

Nameservers

ns1.dnsv3.com.ns2.dnsv3.com.

Performance

85

Core Web Vitals

Weight

First Contentful Paint
1.8 s10%
Speed Index
2.3 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
44 KB
250 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Tencent Cloud

Technology Stack

4 Technologies Detected

Libraries

1
jQueryv1.8

UI Components

1
Swiper

CSS Frameworks

1
Tailwind CSS

Web Servers

1
OpenRestyv1.21.4.1

SEO Analysis

D48/100
11
12
2
Meta Tags12/15
Content11/12
Headings0/8
Technical9/25
E-E-A-T0/7
Images2/7
Links5/5
URL5/5
Social0/5
Freshness0/4
Mobile1/4
Indexability3/3
3
3839.com3839.com

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Title Length30 chars

Recommended: 50-60 chars (~186px / 580px)

Description Length133 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)

14 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

8 URLs

8 sub-sitemaps

robots.txt

25 rules

Local SEO

Local Search Readiness

3/100
Poor
1 14 2

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

Sponsored

AI & LLM Readiness

F11/100
Bot Access
3/25
Machine Read.
7/25
Schema Data
0/25
Citation
1/25

AI Bot Access

0/14 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
Text ratio:8%
Words:2,466
Token eff.:Optimal

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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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.
D
49/100
4
Passed
8
Critical
1
Warnings
Images & Alt Text
15/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
3/20
Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
Forms & Inputs
10/15
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
5/15
Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
ARIA & Roles
1/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
5 recommendations
  • •Accessibility recommendation preview...
Upgrade to view recommendations

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.
51/100
A+
5 mg
CO₂e / view
43.7 KB
Page Weight
95%
Cleaner Than
New Visitor
6 mg
vs
Returning (cached)
3 mg
Annual (10K/mo)
648 g
Emission Segments
Data Center
1 mg
Network
1 mg
Device
3 mg
Resource Breakdown
JavaScript
4.4 KB
HTML
39.4 KB
Green Hosting Not Verified
Tencent Cloud
4 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
F

Security Score

21%Critical
Interactive

HTTPS

No WAF

195d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

DigiCert, Inc.

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

03.11.2025

Valid Until

16.11.2026

OCSP Stapling

Enabled

Subject Alternative Names (20)

default.chinanetcenter.com*.wscdns.com*.vxzz.xyz*.hnrrco.com*.qdllm.online*.100ycdn.com*.dianping.com*.dpfile.com+12 more

SHA-256 Fingerprint

69:2A:C8:21:F1:0A:CF:AB:56:54:D6:FA:16:7D:31:B7:07:01:95:1F...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

age
463
cache-control
🟡 1800s(max-age=1800)
connection
keep-alive
content-encoding
📦 Gzip(gzip)
content-type
text/html
date
Tue, 05 May 2026 14:30:40 GMT
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

65

SPF
DKIM
DMARC

DMARC Policy

None (Monitor Only)

MX Records (2)

mxbiz2.qq.com
mxbiz1.qq.com

Domain Information

3839.com

Domain Age
22y 11m

Created

07.06.2003

Expires

07.06.2030

Last Updated

04.12.2025

Registrar

eName Technology Co., Ltd.

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.
F
36/100
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

微软雅黑

WCAG Partial
48/100
Readability
/30
10/30

12px · LH 1.67

Hierarchy
/20
10/20
WCAG
/25
14/25

1:1 min contrast

Performance
/25
14/25

1 font

Heading Font

微软雅黑

Body Font

微软雅黑

Sans12px

Contrast Ratio

1:1

24 issues

Reading Comfort

~182 CPL

Too wide
12px
p

❌ Critical: 12px body text is too small. Minimum 14px, recommend 16px+.

❌ Very long lines: ~182 chars/line causes eye strain. Add max-width constraint.

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

⚠️ Partial contrast: 24 elements below WCAG AA threshold (min 1.0:1).

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

⚠️ Missing font-display: swap — users may see invisible text while fonts load (FOIT).

Buy on MyFontsFlesch 100

Color Palette

7 unique colors
15.32:1 AAA Light
#f4f5f5
Background· 28.8%
#1a1f1a
Text· 16.5%
#5fb0d9
Accent· 7.7%
#796154
Secondary· 3.9%
#315571
Secondary· 1.2%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

1
Google AnalyticsFree

User behavior and product analytics

1

Categories

1

Total Tools

0

Enterprise

0

Mid-Market

Assessment: Growing marketing technology adoption

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Scripts & Styles

18 Resources

15
Scripts
3
Styles
1
Async
0
Defer

Top Script Sources

f2.3839img.com(11)w.cnzz.com(2)c.cnzz.com(1)hm.baidu.com(1)

Website Identity

3839.com

22 years old
Location detected: 🇨🇳 Chinavia ip
eName Technology Co., Ltd.

Sponsored

Last analyzed: 05 May 2026 at 14:31

Historical Analysis & Change Tracking

3839.com Technology Stack - Built With jQuery, Swiper, Tailwind CSS, OpenResty | StackOptic | StackOptic