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json.cn

https://json.cn· First analyzed 14 May 2026· Updated 14 May 2026
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json.cn
Desktop screenshot of json.cn
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Mobile

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Hosting Provider

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

74

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

Other

1

CSS Frameworks

1

Web Servers

1

SEO Analysis

D45/100
12
12
1
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
J
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

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.

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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.
C
65/100
8
Passed
7
Critical
2
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...

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
A
57 mg
CO₂e / view
458.8 KB
Page Weight
90%
Cleaner Than
New Visitor
65 mg
vs
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...
F

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

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

0

SPF
DKIM
DMARC

Domain Information

json.cn

DNSSEC
Not Enabled

Privacy & Compliance

Quantcast Choice

Cookie Consent Banner
Quantcast Choice
Privacy Policy
Terms of Service

GDPR Indicators

Cookie consent banner detected
CMP: Quantcast Choice
Privacy policy page linked
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.
C
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...

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
h4
15px
p
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

1

User behavior and product analytics

Advertising

1

Ad platforms and retargeting pixels

2

Categories

2

Total Tools

1

Enterprise

0

Mid-Market

Assessment: Well-developed marketing technology stack

Ad Networks

Google AdSense

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Scripts & Styles

25 Resources

20
Scripts
5
Styles
8
Async
0
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