nhcsw.com

https://nhcsw.com· First analyzed 17 May 2026· Updated 17 May 2026

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nhcsw.com

Mobile

Sponsored

Hosting Provider

China Unicom Fujian Province Network

IP Address

36.249.93.227

Site Location

🇨🇳 Chinavia ip

Server Location

🇨🇳 Xiamen, China

ASN

AS4837

Server

Nginx

Performance

Core Web Vitals

Weight

First Contentful Paint

2.7 s10%

Speed Index

3.5 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

134 KB

33 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Bootstrap

Infrastructure

Hosting

China Unicom Fujian Province Network

Technology Stack

4 Technologies Detected

CSS Frameworks

Libraries

Web Servers

SEO Analysis

D44/100

Meta Tags7/15

Content9/12

Headings1/8

Technical11/25

E-E-A-T0/7

Images2/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile1/4

Indexability3/3

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Title Length5 chars

Recommended: 50-60 chars (~31px / 580px)

Description Length82 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (21/31) — critical for accessibility and SEO

14 issues found

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Crawlability

Sitemap

Type: index

4 URLs

4 sub-sitemaps

robots.txt

Local SEO

Local Search Readiness

5/100

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.

12/25

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.txtinvalid

llms-full.txt

Semantic HTML

Heading Hierarchy

Text ratio:4%

Words:340

Token eff.:Optimal

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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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

10/20

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

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

9/15

Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).

ARIA & Roles

6/15

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.

56/100

A+

17 mg

CO₂e / view

134.3 KB

Page Weight

95%

Cleaner Than

New Visitor

19 mg

Returning (cached)

10 mg

Annual (10K/mo)

2.0 kg

Emission Segments

Data Center

4 mg

Network

4 mg

Device

9 mg

Resource Breakdown

JavaScript

93.2 KB

CSS

25.6 KB

HTML

14.7 KB

Other

925 B

Green Hosting Not Verified

China Unicom Fujian Province Network

5 recommendations

•Carbon footprint recommendation preview...

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Security Score

0%Critical

Critical / Transactional

HTTPS

No WAF

62d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

19.04.2026

Valid Until

18.07.2026

Subject Alternative Names (1)

nhcsw.com

SHA-256 Fingerprint

EA:04:9E:C6:EC:AE:3B:7B:57:DE:41:CE:B5:13:8C:6C:3B:C1:4A:2F...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=utf-8

date

Sun, 17 May 2026 20:23:14 GMT

referrer-policy

strict-origin-when-cross-origin

server

nginx

vary

Accept-Encoding, Origin

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

Domain Information

nhcsw.com

Domain Age

15y 6m

Created

09.11.2010

Expires

09.11.2031

Last Updated

01.03.2026

Registrar

Shanghai Meicheng Technology Information Development Co., Ltd.

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.

55/100

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

3 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Microsoft Yahei

WCAG Partial

57/100

Readability

/30

20/30

14px · LH 1.43

Hierarchy

/20

9/20

WCAG

/25

14/25

2.85:1 min contrast

Performance

/25

14/25

1 font

Heading Font

Microsoft Yahei

Body Font

Microsoft Yahei

Sans14px

Contrast Ratio

2.85:1

15 issues

Reading Comfort

Single Family

left aligned

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

✅ Optimal line spacing: 1.43 ratio (ideal range 1.4–1.6).

⚠️ Partial contrast: 15 elements below WCAG AA threshold (min 2.9:1).

✅ 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

11 unique colors

5.37:1 AA Light

#f8f8f8

Background· 33.4%

#756263

Secondary· 5.9%

#661510

Primary· 10.5%

#951c17

Accent· 9.7%

#e85f2c

Accent· 7.6%

#b3c5b5

Secondary· 7.4%

#bd261f

Accent· 6.8%

#e9d2cf

Secondary· 6.6%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

15 Resources

Scripts

Styles

Async

Defer

Top Script Sources

code.bdstatic.com(7)assets2.myjiedian.com(2)zz.bdstatic.com(1)hm.baidu.com(1)

Website Identity

nhcsw.com

15 years old

Location detected: 🇨🇳 Chinavia ip

Shanghai Meicheng Technology Information Development Co., Ltd.

Sponsored

Last analyzed: 17 May 2026 at 20:23

Historical Analysis & Change Tracking