pubyun.com

https://pubyun.com· First analyzed 13 May 2026· Updated 13 May 2026

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pubyun.com

Mobile

Sponsored

Hosting Provider

ChangZhou Bitcomm Software Technology Co., Limited

IP Address

118.184.169.32

Site Location

🇨🇳 Chinavia ip

Server Location

🇨🇳 Changzhou, China

ASN

AS18257

Organization

ChangZhou Bitcomm Software Technology Co., Limited

Server

Nginx

Nameservers

ns2.pubyun.com.ns1.pubyun.com.

Performance

Core Web Vitals

Weight

First Contentful Paint

7.6 s10%

Speed Index

9.9 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

7 KB

23 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

ChangZhou Bitcomm Software Technology Co., Limited

Technology Stack

3 Technologies Detected

Libraries

jQueryv1.7.1

Analytics

Google Analytics

Web Servers

Nginx

SEO Analysis

F36/100

Meta Tags5/15

Content9/12

Headings1/8

Technical6/21

E-E-A-T0/7

Images1/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile1/4

Indexability3/3

pubyun.compubyun.com

专业的云计算、动态域名服务提供商 - 公云PubYun

作为云计算技术的专业服务提供商，中国公云(3322)为数百万用户提供内网域名、智能域名、动态域名等基础信息服务。

Title Length27 chars

Recommended: 50-60 chars (~167px / 580px)

Description Length56 chars

Recommended: 120-160 chars

Issues (3)

• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (37/37) — 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

5/100

Poor

2 13 2

This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

Sponsored

AI & LLM Readiness

F25/100

Bot Access

20/25

Machine Read.

2/25

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

def. lists

Text ratio:8%

Words:210

Token eff.:Too Short

Sections/1K:28.6

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.

49/100

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

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.

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.

54/100

A+

<0.001 g

CO₂e / view

7.1 KB

Page Weight

95%

Cleaner Than

New Visitor

1 mg

Returning (cached)

<0.001 g

Annual (10K/mo)

108 g

Emission Segments

Data Center

<0.001 g

Network

<0.001 g

Device

<0.001 g

Resource Breakdown

HTML

7.1 KB

Green Hosting Not Verified

ChangZhou Bitcomm Software Technology Co., Limited

4 recommendations

•Carbon footprint recommendation preview...

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Security Score

64%Fair

Interactive

HTTPS

No WAF

58d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

12.04.2026

Valid Until

11.07.2026

Subject Alternative Names (2)

*.pubyun.compubyun.com

SHA-256 Fingerprint

1D:EC:18:D7:79:7C:2F:1B:1B:A4:65:A0:F5:63:B0:07:B6:34:45:A8...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

content-encoding

📦 Gzip(gzip)

content-language

en-gb

content-type

text/html; charset=utf-8

cross-origin-opener-policy

same-origin

date

Wed, 13 May 2026 14:57:51 GMT

referrer-policy

same-origin

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

MX Records (3)

alt1.aspmx.l.google.com

alt2.aspmx.l.google.com

aspmx.l.google.com

Domain Information

pubyun.com

Domain Age

14y 2m

Created

06.03.2012

Expires

06.03.2027

Last Updated

27.11.2025

Registrar

Alibaba Cloud Computing (Beijing) Co., Ltd.

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

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.

39/100

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.

3 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Microsoft Yahei

WCAG Partial

47/100

Readability

/30

12/30

14px · LH 4.29

Hierarchy

/20

7/20

WCAG

/25

14/25

1.81:1 min contrast

Performance

/25

14/25

1 font

Heading Font

Microsoft Yahei

Sans

Body Font

Microsoft Yahei

Sans14px

Contrast Ratio

1.81:1

11 issues

Reading Comfort

Single Font Family

left aligned

16px

14px

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

⚠️ Wide line spacing (4.29). 1.4–1.6 is optimal for body text.

⚠️ Partial contrast: 11 elements below WCAG AA threshold (min 1.8:1).

❌ 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

7 unique colors

Light

#ffffff

Background· 54.6%

#39acd8

Primary· 17.2%

#4f769d

Secondary· 10.2%

#9ccad8

Secondary· 7.9%

#e5e4d9

Secondary· 5.1%

#2c3c52

Secondary· 1.3%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

8 Resources

Scripts

Styles

Async

Defer

Top Script Sources

img.pubyun.com(4)ssl.google-analytics.com(1)hm.baidu.com(1)

Website Identity

pubyun.com

support@pubyun.com

14 years old

Location detected: 🇨🇳 Chinavia ip

Alibaba Cloud Computing (Beijing) Co., Ltd.📧 Google Workspace

Sponsored

Last analyzed: 13 May 2026 at 14:58

Historical Analysis & Change Tracking