sthu.cn

https://sthu.cn· First analyzed 02 Jun 2026· Updated 02 Jun 2026

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sthu.cn

Mobile

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Hosting Provider

Chinanet SH

IP Address

116.239.14.77

Site Location

🇨🇳 Chinavia tld

Server Location

🇨🇳 Shanghai, China

ASN

AS4812

Organization

Chinanet SH

Server

Nginx

Nameservers

ns7.dns.net.cn.ns20.dns.net.cn.ns.dns.net.cn.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

549 ms10%

Speed Index

714 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

36 KB

3 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Chinanet SH

Technology Stack

1 Technologies Detected

Web Servers

Nginx

SEO Analysis

F21/100

Meta Tags4/15

Content0/12

Headings0/8

Technical5/21

E-E-A-T0/7

Images0/7

Links0/5

URL5/5

Social0/5

Freshness0/4

Mobile4/4

Indexability3/3

sthu.cnsthu.cn

域名暂未生效

No description available for this page.

Title Length6 chars

Recommended: 50-60 chars (~37px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (4)

• Missing meta description — important for click-through rates in SERPs
• Very thin content (1 words). Search engines need substantial content for ranking.
• Missing H1 tag — every page should have exactly one H1

12 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.

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AI & LLM Readiness

F21/100

Bot Access

20/25

Machine Read.

1/25

Schema Data

0/25

Citation

0/25

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:0%

Words:0

Token eff.:Too Short

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 (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.

63/100

Passed

Critical

Warnings

Images & Alt Text

20/20

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

Semantic Structure

3/20

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

Forms & Inputs

15/15

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

1/15

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

3 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.

57/100

A+

4 mg

CO₂e / view

35.9 KB

Page Weight

95%

Cleaner Than

New Visitor

5 mg

Returning (cached)

3 mg

Annual (10K/mo)

528 g

Emission Segments

Data Center

1 mg

Network

1 mg

Device

2 mg

Resource Breakdown

CSS

35.2 KB

HTML

712 B

Green Hosting Not Verified

Chinanet SH

4 recommendations

•Carbon footprint recommendation preview...

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Security Score

41%Poor

Interactive

HTTPS

No WAF

199d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

TrustAsia Technologies, Inc.

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

21.11.2025

Valid Until

19.12.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

www.sthu.cnsthu.cn

SHA-256 Fingerprint

8B:C4:E0:38:91:51:60:8D:45:1E:13:9D:10:5C:CB:D7:3F:5D:09:D4...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges

bytes

content-encoding

📦 Gzip(gzip)

content-length

412

content-type

text/html

date

Tue, 02 Jun 2026 16:38:15 GMT

frame-options

SAMEORIGIN

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

Domain Information

sthu.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.

29/100

Not Mobile Friendly

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

Times New Roman

64/100

Readability

/30

21/30

16px · LH --

Hierarchy

/20

10/20

WCAG

/25

19/25

Performance

/25

14/25

1 font

Heading Font

Times New Roman

Body Font

Times New Roman

Serif16px

Contrast Ratio

Reading Comfort

Single Family

left aligned

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

✅ 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

3 unique colors

Light

#f4f2f3

Secondary· 77.99999999999999%

#c8d2dd

Primary· 1.3%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

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Website Identity

sthu.cn

Location detected: 🇨🇳 Chinavia tld

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Last analyzed: 02 Jun 2026 at 16:38

Historical Analysis & Change Tracking