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cls.cn

https://cls.cn· First analyzed 28 Apr 2026· Updated 28 Apr 2026
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cls.cn
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Mobile

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Hosting Provider

Hebei Sea Whale Technology Co. Ltd.

IP Address

103.143.19.17

Site Location

🇨🇳 Chinavia tld

Server Location

🇨🇳 Haidian, China

ASN

AS134760

Organization

Hebei Sea Whale Technology Co. Ltd.

Server

CW

Nameservers

vip4.alidns.com.vip3.alidns.com.

Performance

78

Core Web Vitals

Weight

First Contentful Paint
2.6 s10%
Speed Index
3.3 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
9 MB
84 requests

Image Optimization

Lazy Load
0–49
50–89
90–100

Architecture Stack

Hybrid
🔀 Hybrid
Frontend
Framework
Next.js
Infrastructure
Hosting
Hebei Sea Whale Technology Co. Ltd.

Technology Stack

4 Technologies Detected

Meta Frameworks

1
Next.js

UI Components

1
Slick Carousel

CSS Frameworks

1
Tailwind CSS

Frameworks

1
Express

SEO Analysis

D52/100
14
10
2
Meta Tags9/15
Content9/12
Headings3/8
Technical13/25
E-E-A-T0/7
Images1/7
Links5/5
URL5/5
Social0/5
Freshness0/4
Mobile4/4
Indexability3/3
C
cls.cncls.cn

财联社-主流财经新闻集团和财经通讯社-cls.cn

财联社由上海报业集团主管主办，持有《互联网新闻信息服务许可证》的主流财经新闻集团和财经通讯社，涵盖A股24小时电报、股市、金融、行情看盘、科创板等证券资讯，以“准确、快速、权威、专业”为新闻准则，致力于为投资者提供“媒体+资讯+数据+服务+交易”五位于一体的全方位金融服务。

Title Length25 chars

Recommended: 50-60 chars (~150px / 580px)

Description Length137 chars

Recommended: 120-160 chars

Issues (2)

  • • Missing H1 tag — every page should have exactly one H1
  • • Most images missing alt text (21/25) — critical for accessibility and SEO

12 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

24 URLs

24 sub-sitemaps

robots.txt

10 rules

Sitemap reference found

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.

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AI & LLM Readiness

F35/100
Bot Access
20/25
Machine Read.
10/25
Schema Data
0/25
Citation
5/25

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:4%
Words:582
Token eff.:Optimal
Sections/1K:36.1

Structured Data

No Schema

Citation Readiness

Opening Summary
Descriptive Headingsavg 1w
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...
Upgrade to view recommendations

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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
7
Passed
6
Critical
1
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
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
7/15
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...
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.
20/100
F
1.13 g
CO₂e / view
9.0 MB
Page Weight
5%
Cleaner Than
New Visitor
1.30 g
vs
Returning (cached)
649 mg
Annual (10K/mo)
136.2 kg
Emission Segments
Data Center
253 mg
Network
272 mg
Device
609 mg
Resource Breakdown
JavaScript
337.4 KB
Images
100.6 KB
CSS
8.5 MB
HTML
47.9 KB
Other
27.1 KB
Green Hosting Not Verified
Hebei Sea Whale Technology Co. Ltd.
6 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
F

Security Score

21%Critical
Interactive

HTTPS

No WAF

181d

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/2

Valid From

25.09.2025

Valid Until

26.10.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.cls.cncls.cn

SHA-256 Fingerprint

C1:DF:78:DA:81:96:B9:95:05:7D:C2:C5:60:80:49:87:80:FA:4D:A2...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

content-encoding
📦 Gzip(gzip)
content-type
text/html; charset=utf-8
date
Tue, 28 Apr 2026 09:35:58 GMT
etag
W/"30c68-n3Phl3d6U1DESrlOdlwLgnCqKUE"
server
CW
vary
Accept-Encoding
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

70

SPF
DKIM
DMARC

DMARC Policy

None (Monitor Only)

MX Records (2)

qiye163mx01.mxmail.netease.com
qiye163mx02.mxmail.netease.com

Domain Information

cls.cn

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.
D
53/100
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.
Viewport
width=device-width, initial-scale=1
3 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

PingFang SC

WCAG Partial
72/100
Readability
/30
22/30

16px · LH 1.61

Hierarchy
/20
19/20

2x ratio · ✓ H1→H6

WCAG
/25
17/25

1.27:1 min contrast

Performance
/25
14/25

1 font

Heading Font

PingFang SC

Sans32px

Body Font

PingFang SC

Sans16px

Contrast Ratio

1.27:1

13 issues

Reading Comfort

Single Font Family

left aligned
32px
h1
20px
h2
17px
h3

✅ Excellent readability: 16px body text is ideal for all devices.

✅ Easy to read: Flesch score 94/100 — accessible to general audiences.

⚠️ Partial contrast: 13 elements below WCAG AA threshold (min 1.3:1).

✅ Perfect heading hierarchy: Sequential h1→h2→h3 with single H1 — ideal for SEO & accessibility.

✅ Strong hierarchy: Headlines are 2.0x larger than body text.

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

Buy on MyFontsFlesch 95

Color Palette

10 unique colors
5.57:1 AA Light
#ffffff
Background· 60.2%
#726470
Other· 2.4%
#2e3954
Primary· 6.7%
#0c142e
Accent· 6.5%
#dfd9cf
Secondary· 5.3%
#f6f1ec
Secondary· 3.8%
#2f5c82
Secondary· 3.2%
#3d253f
Secondary· 2.6%

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

27 Resources

20
Scripts
7
Styles
13
Async
0
Defer

Top Script Sources

wwwjs.cls.cn(14)cdnjs.cls.cn(4)o.alicdn.com(1)g.alicdn.com(1)

Website Identity

cls.cn

Location detected: 🇨🇳 Chinavia tld

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Last analyzed: 28 Apr 2026 at 09:36

Historical Analysis & Change Tracking