e21.cn

https://e21.cn· First analyzed 30 Apr 2026· Updated 30 Apr 2026

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e21.cn

Mobile

Sponsored

Hosting Provider

CNC Group CHINA169 Hubei Province Network

IP Address

119.36.213.114

Site Location

🇨🇳 Chinavia tld

Server Location

🇨🇳 Xiangyang, China

ASN

AS4837

Server

Apache

Nameservers

dns.e21.cn.dns2.e21.cn.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

672 ms10%

Speed Index

874 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

7.1 MB

138 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

CNC Group CHINA169 Hubei Province Network

Technology Stack

9 Technologies Detected

Libraries

Frameworks

UI Components

Other

AOS (Animate On Scroll)

Other

Modernizr

CSS Frameworks

Tailwind CSS

Web Servers

Apache

SEO Analysis

F39/100

Meta Tags4/15

Content10/12

Headings0/8

Technical8/21

E-E-A-T0/7

Images1/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile3/4

Indexability3/3

e21.cne21.cn

湖北教育信息网

No description available for this page.

Title Length7 chars

Recommended: 50-60 chars (~43px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (3)

• Missing meta description — important for click-through rates in SERPs
• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (125/140) — critical for accessibility and SEO

13 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

F31/100

Bot Access

20/25

Machine Read.

10/25

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

nav

Text ratio:3%

Words:362

Token eff.:Optimal

Depth:1/5

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 (11)

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.

62/100

Passed

Critical

Warnings

Images & Alt Text

15/20

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

Semantic Structure

9/20

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

Forms & Inputs

7/15

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

7/15

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

6 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.

18/100

901 mg

CO₂e / view

7.1 MB

Page Weight

Cleaner Than

New Visitor

1.03 g

Returning (cached)

515 mg

Annual (10K/mo)

108.1 kg

Emission Segments

Data Center

201 mg

Network

216 mg

Device

484 mg

Resource Breakdown

JavaScript

456.8 KB

Images

6.1 MB

CSS

560.7 KB

HTML

19.6 KB

Other

348 B

Green Hosting Not Verified

CNC Group CHINA169 Hubei Province Network

6 recommendations

•Carbon footprint recommendation preview...

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Security Score

46%Poor

Interactive

HTTPS

No WAF

84d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

DigiCert, Inc.

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/2

Valid From

24.07.2025

Valid Until

23.07.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.e21.cne21.cn

SHA-256 Fingerprint

D1:F9:0F:C0:E6:84:CD:7F:77:70:85:32:3F:2A:68:FF:BD:66:8E:33...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges

bytes

cache-control

🟡 600s(max-age=600)

content-encoding

📦 Gzip(gzip)

content-language

zh-CN

content-length

19765

content-type

text/html

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (2)

mxbiz2.qq.com

mxbiz1.qq.com

Domain Information

e21.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.

52/100

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=1.0

2 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

MicrosoftYaHei

WCAG Partial

44/100

Readability

/30

8/30

14px · LH 2.00

Hierarchy

/20

9/20

WCAG

/25

14/25

3.85:1 min contrast

Performance

/25

13/25

1 font · 1 req

Heading Font

MicrosoftYaHei

Body Font

MicrosoftYaHei

Sans14px

Contrast Ratio

3.85:1

6 issues

Reading Comfort

~42 CPL

Narrow lines

14px

❌ Critical: 14px 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: 6 elements below WCAG AA threshold (min 3.9:1).

✅ 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 MyFonts

Color Palette

10 unique colors

Light

#ffffff

Background· 46.7%

#065ae7

Primary· 13.8%

#d5eaf9

Accent· 9%

#775c60

Secondary· 7.5%

#84ccdd

Accent· 5.8%

#dcc9b9

Secondary· 5.4%

#05357e

Accent· 4.7%

#698496

Secondary· 3.6%

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

local(15)js(4)_sitegray(1)

Website Identity

e21.cn

Location detected: 🇨🇳 Chinavia tld

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Last analyzed: 30 Apr 2026 at 10:39

Historical Analysis & Change Tracking