shanghairc.com

https://shanghairc.com· First analyzed 02 Jun 2026· Updated 02 Jun 2026

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shanghairc.com

Mobile

Sponsored

Hosting Provider

Aliyun Computing Co., LTD

IP Address

139.224.113.63

Site Location

🇨🇳 Chinavia ip

Server Location

🇨🇳 Shanghai, China

ASN

AS37963

Organization

Aliyun Computing Co., LTD

Server

Nginx

Nameservers

dns21.hichina.com.dns22.hichina.com.

Performance

Core Web Vitals

Weight

First Contentful Paint

972 ms10%

Speed Index

1.3 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

967 KB

59 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Aliyun Computing Co., LTD

Technology Stack

1 Technologies Detected

Web Servers

Nginx

SEO Analysis

D54/100

Meta Tags7/15

Content10/12

Headings3/8

Technical10/21

E-E-A-T3/7

Images4/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile4/4

Indexability3/3

shanghairc.comshanghairc.com

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Title Length22 chars

Recommended: 50-60 chars (~132px / 580px)

Description Length73 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag — every page should have exactly one H1

12 issues found

Upgrade to view details

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.

7/25

Schema Data

0/25

Citation

8/25

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:8%

Words:1,023

Token eff.:Optimal

Sections/1K:15.6

Structured Data

No Schema

Citation Readiness

Opening Summary

Descriptive Headingsavg 1.2w

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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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.

55/100

Passed

Critical

Warnings

Images & Alt Text

20/20

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

Semantic Structure

7/20

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

Forms & Inputs

5/15

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

7/15

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.

34/100

120 mg

CO₂e / view

966.6 KB

Page Weight

70%

Cleaner Than

New Visitor

137 mg

Returning (cached)

68 mg

Annual (10K/mo)

14.3 kg

Emission Segments

Data Center

27 mg

Network

29 mg

Device

64 mg

Resource Breakdown

JavaScript

52.1 KB

Images

737.5 KB

CSS

96.9 KB

HTML

80.1 KB

Green Hosting Not Verified

Aliyun Computing Co., LTD

6 recommendations

•Carbon footprint recommendation preview...

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Security Score

25%Critical

Critical / Transactional

HTTPS

No WAF

195d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Asseco Data Systems S.A.

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/2

Valid From

15.11.2025

Valid Until

15.12.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.shanghairc.comshanghairc.com

SHA-256 Fingerprint

0B:D7:96:BE:68:7B:89:8F:34:0D:2D:91:52:96:74:16:E2:C5:82:FF...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

🟣 Private(private)

content-type

text/html

date

Tue, 02 Jun 2026 11:17:23 GMT

referrer-policy

origin-when-cross-origin

server

Nginx

strict-transport-security

max-age=31536000; includeSubDomains

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

Domain Information

shanghairc.com

Domain Age

22y 11m

Created

07.07.2003

Expires

07.07.2027

Last Updated

04.04.2025

Registrar

Xin Net Technology Corporation

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.

53/100

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

Hiragino Sans GB + SimSun

WCAG Partial

49/100

Readability

/30

12/30

13px · LH 1.38

Hierarchy

/20

7/20

WCAG

/25

16/25

1:1 min contrast

Performance

/25

14/25

2 fonts

Heading Font

Hiragino Sans GB

Sans

Body Font

SimSun

Sans13px

Contrast Ratio

1:1

5 issues

Reading Comfort

Dual Sans-Serif

left aligned

12px

13px

Minor Second

Scale

❌ Critical: 13px body text is too small. Minimum 14px, recommend 16px+.

⚠️ Tight line spacing (1.38). Increase to 1.4–1.6 for better readability.

⚠️ Partial contrast: 5 elements below WCAG AA threshold (min 1.0:1).

❌ Missing H1: Every page should have exactly one H1 element for SEO and 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

8 unique colors

2.27:1 Fail Light

#ffffff

Background· 59.90000000000001%

#afabab

Other· 8.6%

#21a7ee

Primary· 13.1%

#d4dbdd

Border· 7.2%

#3f5896

Secondary· 3.4%

#f0e4d7

Secondary· 3.3%

#7ecae5

Accent· 2.7%

#4988b5

Secondary· 1.7%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

11 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(7)

Website Identity

shanghairc.com

22 years old

Location detected: 🇨🇳 Chinavia ip

Xin Net Technology Corporationzh-CN

Sponsored

Last analyzed: 02 Jun 2026 at 11:18

Historical Analysis & Change Tracking