webtrn.cn

https://webtrn.cn· First analyzed 20 May 2026· Updated 20 May 2026

Export

webtrn.cn

Mobile

Sponsored

Hosting Provider

Alibaba Cloud

alibabacloud.com

IP Address

47.92.237.234

Site Location

🇨🇳 Chinavia tld

Server Location

🇨🇳 Beijing, China

ASN

AS37963

Organization

Aliyun Computing Co., LTD

Nameservers

dns3.webtrn.cn.dns2.webtrn.cn.dns4.webtrn.cn.dns1.webtrn.cn.

Performance

Core Web Vitals

Weight

First Contentful Paint

10.3 s10%

Speed Index

13.3 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

4.4 MB

123 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Alibaba Cloud

Technology Stack

4 Technologies Detected

Libraries

UI Components

CSS Frameworks

SEO Analysis

D41/100

Meta Tags8/15

Content9/12

Headings3/8

Technical6/21

E-E-A-T0/7

Images1/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile1/4

Indexability3/3

webtrn.cnwebtrn.cn

网梯学苑

非学历教育平台;专业技术人员继续教育网络学习平台;专业技术人员继续教育在线培训平台;事业单位工作人员网络学习平台;事业单位工作人员在线培训平台;企业内部培训;残障人士测评系统;残疾人行业解决方案;数字化培训平台;考试系统;培训系统;继续教育培训平台;继续教育在线学习;网梯智慧培训平台;在线培训学习;继续教育公需课...

Description truncated.

Title Length4 chars

Recommended: 50-60 chars (~24px / 580px)

Description Length165 chars

Recommended: 120-160 chars

Issues (3)

• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (65/65) — critical for accessibility and SEO
• Missing viewport meta tag — page may not be mobile-friendly (Google uses mobile-first indexing)

14 issues found

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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

F30/100

Bot Access

20/25

Machine Read.

7/25

Schema Data

0/25

Citation

3/25

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:1%

Words:470

Token eff.:Optimal

Sections/1K:17

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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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.

38/100

Passed

Critical

Warnings

Images & Alt Text

5/20

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

Semantic Structure

4/20

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

Forms & Inputs

0/15

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

9/15

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

5 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.

2/100

556 mg

CO₂e / view

4.4 MB

Page Weight

15%

Cleaner Than

New Visitor

635 mg

Returning (cached)

317 mg

Annual (10K/mo)

66.7 kg

Emission Segments

Data Center

124 mg

Network

133 mg

Device

298 mg

Resource Breakdown

JavaScript

841.1 KB

Images

1.5 MB

CSS

2.0 MB

HTML

31.4 KB

Other

102.8 KB

Green Hosting Not Verified

Alibaba Cloud

10 recommendations

•Carbon footprint recommendation preview...

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Security Score

0%Critical

Critical / Transactional

HTTPS

No WAF

83d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Unizeto Technologies S.A.

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/1.1

Valid From

12.08.2025

Valid Until

12.08.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.webtrn.cnwebtrn.cn

SHA-256 Fingerprint

04:C3:0E:53:89:E5:7A:20:4B:1B:80:B0:AC:80:67:12:2F:51:AB:18...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

access-control-allow-headers

range

connection

content-language

zh-CN

content-type

text/html;charset=UTF-8

date

Wed, 20 May 2026 07:51:10 GMT

transfer-encoding

chunked

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (2)

mxbiz1.qq.com

mxbiz2.qq.com

Domain Information

webtrn.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.

40/100

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.

4 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Microsoft YaHei

WCAG Partial

44/100

Readability

/30

9/30

12px · LH 2.00

Hierarchy

/20

8/20

WCAG

/25

14/25

2.85:1 min contrast

Performance

/25

13/25

1 font · 1 req

Heading Font

Microsoft YaHei

Sans

Body Font

Microsoft YaHei

Sans12px

Contrast Ratio

2.85:1

17 issues

Reading Comfort

~39 CPL

Narrow lines

16px

30px

42px

12px

Minor Third

Scale

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

⚠️ Wide line spacing (2.00). 1.4–1.6 is optimal for body text.

⚠️ Partial contrast: 17 elements below WCAG AA threshold (min 2.9:1).

❌ 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 MyFonts

Color Palette

9 unique colors

Light

#ffffff

Background· 42.8%

#074cd7

Accent· 12.9%

#042cb1

Accent· 10.600000000000001%

#1b85f2

Primary· 9.6%

#1267e0

Accent· 9.1%

#dfe7ea

Secondary· 5.3%

#82acd7

Accent· 3.8%

#fbece3

Accent· 3.1%

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

wtykt-p.webtrn.cn(17)local(2)hm.baidu.com(1)

Website Identity

webtrn.cn

Location detected: 🇨🇳 Chinavia tld

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Last analyzed: 20 May 2026 at 07:52

Historical Analysis & Change Tracking