cnal.com

https://cnal.com· First analyzed 09 May 2026· Updated 09 May 2026

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cnal.com

Mobile

Sponsored

Hosting Provider

Chinanet JS

IP Address

58.215.76.169

Site Location

🇨🇳 Chinavia ip

Server Location

🇨🇳 Nanjing, China

ASN

AS4134

Organization

Chinanet JS

Server

Tengine

CDN

Nameservers

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

Performance

Core Web Vitals

Weight

First Contentful Paint

2.3 s10%

Speed Index

2.9 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

7.7 MB

102 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Chinanet JS

CDN

Technology Stack

5 Technologies Detected

Libraries

CSS Frameworks

Web Servers

Languages

SEO Analysis

D52/100

Meta Tags8/15

Content12/12

Headings8/8

Technical9/25

E-E-A-T0/7

Images1/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile1/4

Indexability3/3

cnal.comcnal.com

世铝网-铝业信息、铝材交易平台

世铝网是铝业信息及铝材交易平台,尽心尽力为铝行业服务,受到南山铝业、云铝股份、亚洲铝业、明泰铝业、中孚实业、万达铝业、鑫泰铝业、中国宏桥、中国忠旺、丛林集团、万基控股、山东裕航、新疆众和等铝行业同仁大力支持。

Title Length15 chars

Recommended: 50-60 chars (~93px / 580px)

Description Length104 chars

Recommended: 120-160 chars

Issues (2)

• Most images missing alt text (67/99) — critical for accessibility and SEO
• Missing viewport meta tag — page may not be mobile-friendly (Google uses mobile-first indexing)

13 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

robots.txt

3 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

F35/100

Bot Access

20/25

Machine Read.

11/25

Schema Data

0/25

Citation

4/25

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

def. lists

Text ratio:4%

Words:1,301

Token eff.:Optimal

Sections/1K:5.4

Depth:1/5

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...

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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.

63/100

Passed

Critical

Warnings

Images & Alt Text

15/20

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

9/15

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

ARIA & Roles

3/15

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.

14/100

980 mg

CO₂e / view

7.7 MB

Page Weight

Cleaner Than

New Visitor

1.12 g

Returning (cached)

560 mg

Annual (10K/mo)

117.6 kg

Emission Segments

Data Center

219 mg

Network

235 mg

Device

526 mg

Resource Breakdown

JavaScript

95.2 KB

Images

7.5 MB

CSS

139.2 KB

HTML

39.4 KB

Other

1.3 KB

Green Hosting Not Verified

Chinanet JS

8 recommendations

•Carbon footprint recommendation preview...

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Security Score

21%Critical

Interactive

HTTPS

No WAF

40d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Sectigo Limited

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/2

Valid From

19.05.2025

Valid Until

18.06.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.cnal.comcnal.com

SHA-256 Fingerprint

E2:33:21:24:C9:D7:E4:70:20:A3:75:69:F6:99:F3:A1:4A:86:BB:B1...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

ali-swift-global-savetime

1778370978

cache-control

🔴 No Cache(no-cache,must-revalidate)

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=utf-8

date

Sat, 09 May 2026 23:56:18 GMT

eagleid

b4a3921a17783709779822673e

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (1)

mx.ym.163.com

Domain Information

cnal.com

Domain Age

24y 1m

Created

24.03.2002

Expires

24.03.2027

Last Updated

18.12.2024

Registrar

Alibaba Cloud Computing (Beijing) Co., Ltd.

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

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.

33/100

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.

5 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

宋体

WCAG Partial

55/100

Readability

/30

11/30

14px · LH 2.86

Hierarchy

/20

16/20

1.71x ratio · ✓ H1→H6

WCAG

/25

14/25

1:1 min contrast

Performance

/25

14/25

2 fonts

Heading Font

宋体

Sans24px

Body Font

宋体

Sans14px

Contrast Ratio

1:1

8 issues

Reading Comfort

~36 CPL

Narrow lines

24px

18px

16px

14px

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

⚠️ Wide line spacing (2.86). 1.4–1.6 is optimal for body text.

⚠️ Partial contrast: 8 elements below WCAG AA threshold (min 1.0:1).

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

✅ Lean font stack: 2 font families keeps load times fast.

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

Buy on MyFonts

Color Palette

10 unique colors

Light

#ffffff

Background· 51.29999999999999%

#63abdd

Primary· 7.9%

#b51317

Accent· 7.1%

#4b1a24

Secondary· 6.1%

#b17369

Secondary· 6.1%

#e7f0f8

Accent· 4.7%

#e7ceb8

Secondary· 4.3%

#f0ebda

Secondary· 3.2%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

16 Resources

Scripts

Styles

Async

Defer

Top Script Sources

skin.cnal.com(6)cdn.cnal.com(3)zz.bdstatic.com(1)hm.baidu.com(1)cdn.bootcss.com(1)

Website Identity

cnal.com

24 years old

Location detected: 🇨🇳 Chinavia ip

Alibaba Cloud Computing (Beijing) Co., Ltd.

Sponsored

Last analyzed: 09 May 2026 at 23:57

Historical Analysis & Change Tracking