jjl.cn

https://jjl.cn· First analyzed 24 May 2026· Updated 24 May 2026

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jjl.cn

Mobile

Sponsored

Hosting Provider

Tencent Cloud

cloud.tencent.com

IP Address

43.144.243.254

Site Location

🇨🇳 Chinavia tld

Server Location

🇨🇳 Beijing, China

ASN

AS45090

Organization

Tencent Cloud Computing (Beijing) Co., Ltd

Server

Nginx

Nameservers

dns1.hichina.com.dns2.hichina.com.

Performance

Core Web Vitals

Weight

First Contentful Paint

2.0 s10%

Speed Index

2.5 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

825 KB

183 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Tencent Cloud

Technology Stack

10 Technologies Detected

Analytics

Libraries

UI Components

CSS Frameworks

Icon Libraries

Web Servers

Frameworks

Customer Support

SEO Analysis

D51/100

Meta Tags12/15

Content6/12

Headings8/8

Technical10/25

E-E-A-T0/7

Images1/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile1/4

Indexability3/3

jjl.cnjjl.cn

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Title Length34 chars

Recommended: 50-60 chars (~210px / 580px)

Description Length133 chars

Recommended: 120-160 chars

Issues (2)

• Most images missing alt text (107/205) — critical for accessibility and SEO
• Missing viewport meta tag — page may not be mobile-friendly (Google uses mobile-first indexing)

13 issues found

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Crawlability

Sitemap

Type: index

63 URLs

63 sub-sitemaps

robots.txt

8 rules

Sitemap reference found

Local SEO

Local Search Readiness

8/100

Poor

2 13 2

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

Sponsored

AI & LLM Readiness

F28/100

Bot Access

20/25

Machine Read.

7/25

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

Text ratio:2%

Words:1,685

Token eff.:Optimal

Structured Data

No Schema

Citation Readiness

Opening Summary1194w

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.

37/100

Passed

Critical

Warnings

Images & Alt Text

5/20

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

Semantic Structure

11/20

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

Forms & Inputs

2/15

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

3/15

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.

4 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.

32/100

102 mg

CO₂e / view

825.0 KB

Page Weight

80%

Cleaner Than

New Visitor

117 mg

Returning (cached)

58 mg

Annual (10K/mo)

12.2 kg

Emission Segments

Data Center

23 mg

Network

25 mg

Device

55 mg

Resource Breakdown

JavaScript

550 B

Images

342 B

HTML

818.7 KB

Other

5.5 KB

Green Hosting Not Verified

Tencent Cloud

5 recommendations

•Carbon footprint recommendation preview...

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Security Score

21%Critical

Interactive

HTTPS

No WAF

237d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

Zhejiang Huluwa Digital Certification Co., Ltd.

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/2

Valid From

16.01.2026

Valid Until

16.01.2027

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.jjl.cnjjl.cn

SHA-256 Fingerprint

2C:2A:11:DB:F7:E3:71:C5:CD:71:D5:9E:4D:AF:0C:02:68:B1:C7:8C...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

content-length

838013

content-type

text/html; charset=utf-8

date

Sun, 24 May 2026 18:36:37 GMT

etag

W/"cc97d-4Pmt3lKnwAzxqFmdQyFN3ogsBvU"

server

nginx

x-powered-by

Express

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (1)

mx.263.net

Domain Information

jjl.cn

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Data Protection Officer mentioned

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.

35/100

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

PingFangSC-Regular

WCAG AA

52/100

Readability

/30

9/30

12px · LH 1.75

Hierarchy

/20

8/20

1.67x ratio

WCAG

/25

21/25

5.84:1 min contrast

Performance

/25

14/25

1 font

Heading Font

PingFangSC-Regular

Sans20px

Body Font

PingFangSC-Regular

Sans12px

Contrast Ratio

5.84:1

WCAG AA (≥4.5:1)

Reading Comfort

~112 CPL

Too wide

20px

30px

22px

12px

Major Second

Scale

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

❌ Very long lines: ~112 chars/line causes eye strain. Add max-width constraint.

✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 5.8:1).

❌ Missing H1: Every page should have exactly one H1 element for SEO and accessibility.

✅ 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 59

Color Palette

10 unique colors

12.87:1 AAA Light

#ffffff

Background· 57.79999999999999%

#333135

Text· 7.3%

#c81e29

Primary· 10.2%

#ee9679

Accent· 6.3%

#da4f47

Accent· 4.5%

#e8e4de

Secondary· 4.3%

#a3242a

Accent· 1.1%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

cdn6.jjl.cn(13)googletagmanager.com(2)zz.bdstatic.com(1)hm.baidu.com(1)google-analytics.com(1)

Website Identity

jjl.cn

Location detected: 🇨🇳 Chinavia tld

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Last analyzed: 24 May 2026 at 18:37

Historical Analysis & Change Tracking