json.cn

https://json.cn· First analyzed 14 May 2026· Updated 14 May 2026

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json.cn

Mobile

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Hosting Provider

Zhengzhou GIANT Computer Network Technology Co., Ltd

IP Address

122.114.8.33

Site Location

🇨🇳 Chinavia tld

Server Location

🇨🇳 Zhengzhou, China

ASN

AS4837

Organization

Zhengzhou GIANT Computer Network Technology Co., Ltd

Server

Nginx

Nameservers

camel.dnspod.net.amos.dnspod.net.

Performance

Core Web Vitals

Weight

First Contentful Paint

3.6 s10%

Speed Index

4.7 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

459 KB

68 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Tailwind CSS

Infrastructure

Hosting

Zhengzhou GIANT Computer Network Technology Co., Ltd

Technology Stack

7 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Advertising

Google Ads Google AdSense

Other

Lottie

CSS Frameworks

Tailwind CSS

Web Servers

Nginx

SEO Analysis

D45/100

Meta Tags5/15

Content10/12

Headings1/8

Technical11/25

E-E-A-T0/7

Images2/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile3/4

Indexability3/3

json.cnjson.cn

JSON在线解析格式化验证 - JSON.cn

Json中文网致力于在中国推广Json,并提供相关的Json解析、验证、格式化、压缩、编辑器以及Json与XML相互转换等服务

Title Length23 chars

Recommended: 50-60 chars (~146px / 580px)

Description Length63 chars

Recommended: 120-160 chars

Issues (1)

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

13 issues found

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Crawlability

Sitemap

robots.txt

23 rules

Local SEO

Local Search Readiness

12/100

Poor

4 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

F15/100

Bot Access

3/25

Machine Read.

8/25

Schema Data

0/25

Citation

4/25

AI Bot Access

0/14 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:3%

Words:978

Token eff.:Optimal

Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary14w

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.

65/100

Passed

Critical

Warnings

Images & Alt Text

15/20

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

Semantic Structure

8/20

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

Forms & Inputs

13/15

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

7/15

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.

48/100

57 mg

CO₂e / view

458.8 KB

Page Weight

90%

Cleaner Than

New Visitor

65 mg

Returning (cached)

32 mg

Annual (10K/mo)

6.8 kg

Emission Segments

Data Center

13 mg

Network

14 mg

Device

30 mg

Resource Breakdown

JavaScript

411.6 KB

Images

300 B

HTML

23.8 KB

Other

23.1 KB

Green Hosting Not Verified

Zhengzhou GIANT Computer Network Technology Co., Ltd

4 recommendations

•Carbon footprint recommendation preview...

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Security Score

0%Critical

Critical / Transactional

HTTPS

No WAF

68d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

ZeroSSL GmbH

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-256

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

22.04.2026

Valid Until

21.07.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

json.cn*.json.cn

SHA-256 Fingerprint

D5:F1:86:F0:22:D2:0D:9E:D0:1C:98:87:9A:00:D9:F6:88:29:81:1A...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

alt-svc

quic=":443"; h3=":443"; h3-29=":443"; h3-27=":443";h3-25=":4...

content-encoding

📦 Gzip(gzip)

content-type

text/html

date

Thu, 14 May 2026 01:27:09 GMT

etag

W/"6959ca60-3a7d6"

last-modified

Sun, 04 Jan 2026 02:03:12 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

Domain Information

json.cn

DNSSEC

Not Enabled

Privacy & Compliance

Quantcast Choice

Cookie Consent Banner

Quantcast Choice

GDPR Indicators

Cookie consent banner detected

CMP: Quantcast Choice

Data Protection Officer mentioned

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.

69/100

Mobile Friendly3 breakpoints

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, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0

2 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Public Sans + -apple-system

WCAG Partial

58/100

Readability

/30

20/30

15px · LH 1.47

Hierarchy

/20

8/20

WCAG

/25

16/25

1.9:1 min contrast

Performance

/25

14/25

System fonts

Heading Font

Public Sans

Body Font

-apple-system

Sans15px

Contrast Ratio

1.9:1

43 issues

Reading Comfort

~36 CPL

Narrow lines

18px

15px

Minor Second

Scale

⚠️ Small text: 15px may strain on mobile. Use ≥16px for WCAG compliance.

✅ Optimal line spacing: 1.47 ratio (ideal range 1.4–1.6).

⚠️ Hard to read: Flesch score 41/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 43 elements below WCAG AA threshold (min 1.9:1).

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

✅ System fonts: Zero font loading delay — best possible LCP impact.

Flesch 41

Color Palette

4 unique colors

2.52:1 Fail Light

#ffffff

Background· 95.79999999999998%

#a0a3ae

Secondary· 1.6%

#eff1f2

Primary· 1.8%

#b5e2d6

Secondary· 0.9%

Business & Marketing Stack

2 Tools Detected

Advanced

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Advertising

Google AdsEnterprise

Ad platforms and retargeting pixels

Sponsored

Scripts & Styles

25 Resources

Scripts

Styles

Async

Defer

Top Script Sources

static.json.cn(9)fundingchoicesmessages.google.com(4)pagead2.googlesyndication.com(3)hm.baidu.com(2)cdn.wwads.cn(1)

Website Identity

json.cn

Location detected: 🇨🇳 Chinavia tld

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Last analyzed: 14 May 2026 at 01:27

Historical Analysis & Change Tracking