nmc.cn

https://nmc.cn· First analyzed 06 May 2026· Updated 06 May 2026

Export

nmc.cn

Mobile

Sponsored

Hosting Provider

Chinanet BJ

IP Address

106.120.82.180

Site Location

🇨🇳 Chinavia tld

Server Location

🇨🇳 Beijing, China

ASN

AS4847

Organization

Chinanet BJ

Server

OpenResty

Nameservers

ns2.sfn.cn.ns1.sfn.cn.

Performance

Core Web Vitals

Weight

First Contentful Paint

1.5 s10%

Speed Index

1.9 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

2.9 MB

77 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Bootstrap

Infrastructure

Hosting

Chinanet BJ

Technology Stack

4 Technologies Detected

CSS Frameworks

Libraries

Web Servers

SEO Analysis

F37/100

Meta Tags5/15

Content10/12

Headings1/8

Technical6/21

E-E-A-T0/7

Images1/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile1/4

Indexability3/3

nmc.cnnmc.cn

关注阴晴冷暖，守望四时安康

中央气象台官方网站

Title Length13 chars

Recommended: 50-60 chars (~80px / 580px)

Description Length9 chars

Recommended: 120-160 chars

Issues (3)

• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (48/48) — critical for accessibility and SEO
• Missing viewport meta tag — page may not be mobile-friendly (Google uses mobile-first indexing)

16 issues found

Upgrade to view details

Local SEO

Local Search Readiness

2/100

Poor

1 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.

8/25

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

nav

Text ratio:5%

Words:605

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 (12)

AI readiness recommendation preview...

Upgrade to view recommendations

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.

46/100

Passed

Critical

Warnings

Images & Alt Text

5/20

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

Semantic Structure

6/20

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

4/15

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

6 recommendations

•Accessibility recommendation preview...

Upgrade to view recommendations

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.

19/100

364 mg

CO₂e / view

2.9 MB

Page Weight

30%

Cleaner Than

New Visitor

416 mg

Returning (cached)

208 mg

Annual (10K/mo)

43.6 kg

Emission Segments

Data Center

81 mg

Network

87 mg

Device

195 mg

Resource Breakdown

JavaScript

106.0 KB

Images

2.5 MB

CSS

213.8 KB

HTML

17.5 KB

Other

14.8 KB

Green Hosting Not Verified

Chinanet BJ

5 recommendations

•Carbon footprint recommendation preview...

Upgrade to view recommendations

Security Score

21%Critical

Interactive

HTTPS

No WAF

319d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

China Financial Certification Authority

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

11.03.2026

Valid Until

22.03.2027

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.nmc.cnnmc.cn

SHA-256 Fingerprint

F7:97:12:FD:31:08:F0:87:0F:CC:73:08:A9:B2:4D:24:47:BC:E9:4D...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

connection

keep-alive

content-encoding

📦 Gzip(gzip)

content-type

text/html

date

Wed, 06 May 2026 16:04:41 GMT

etag

W/"69fb6639-11d1f"

last-modified

Wed, 06 May 2026 16:03:05 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (1)

mx.ym.163.com

Domain Information

nmc.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.

41/100

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...

Upgrade to view recommendations

Typography & Readability

Microsoft Yahei

WCAG Partial

53/100

Readability

/30

17/30

14px · LH --

Hierarchy

/20

8/20

WCAG

/25

14/25

1:1 min contrast

Performance

/25

14/25

1 font

Heading Font

Microsoft Yahei

Body Font

Microsoft Yahei

Sans14px

Contrast Ratio

1:1

29 issues

Reading Comfort

Single Family

left aligned

12px

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

⚠️ Partial contrast: 29 elements below WCAG AA threshold (min 1.0:1).

✅ 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· 40%

#b0dff6

Primary· 10.2%

#49a5dd

Accent· 8.4%

#9db0bc

Secondary· 6.9%

#3d486e

Secondary· 5%

#4693c3

Accent· 3.8%

#94d6e9

Accent· 3.3%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

24 Resources

Scripts

Styles

Async

Defer

Top Script Sources

image.nmc.cn(15)hm.baidu.com(1)local(1)nmc.cn(1)

Website Identity

nmc.cn

Location detected: 🇨🇳 Chinavia tld

Sponsored

Last analyzed: 06 May 2026 at 16:05

Historical Analysis & Change Tracking