jdon.com

https://jdon.com· First analyzed 27 May 2026· Updated 27 May 2026

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jdon.com

Mobile

Sponsored

Hosting Provider

ACE

IP Address

43.174.246.25

Site Location

🇸🇬 Singaporevia ip

Server Location

🇸🇬 Singapore, Singapore

ASN

AS139341

Organization

ACE

Server

Nginx

Performance

100

Core Web Vitals

Weight

First Contentful Paint

625 ms10%

Speed Index

812 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

523 KB

26 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

ACE

Technology Stack

10 Technologies Detected

Advertising

Google Ads Google AdSense Criteo Outbrain

Icon Libraries

Font Awesome Material Icons

CSS Frameworks

Fonts

Payments

Web Servers

SEO Analysis

D58/100

Meta Tags5/15

Content10/12

Headings6/8

Technical19/25

E-E-A-T0/7

Images2/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile3/4

Indexability3/3

jdon.comjdon.com

极道Jdon:一语道破科技玄机

极道Jdon带你探索科技世界，深析最新科技动态，道破科技玄机。

Title Length15 chars

Recommended: 50-60 chars (~90px / 580px)

Description Length31 chars

Recommended: 120-160 chars

Issues (1)

• Most images missing alt text (24/25) — critical for accessibility and SEO

12 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

21,470 URLs

robots.txt

67 rules

Sitemap reference found

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

F22/100

Bot Access

3/25

Machine Read.

8/25

Schema Data

0/25

Citation

11/25

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:11%

Words:8,332

Token eff.:Acceptable

Sections/1K:3.1

Depth:1/5

Structured Data

Microdata

Citation Readiness

Opening Summary85w

Descriptive Headingsavg 3w

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.

65/100

Passed

Critical

Warnings

Images & Alt Text

5/20

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

Semantic Structure

15/20

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

Forms & Inputs

15/15

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

11/15

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.

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.

61/100

65 mg

CO₂e / view

522.6 KB

Page Weight

80%

Cleaner Than

New Visitor

74 mg

Returning (cached)

37 mg

Annual (10K/mo)

7.8 kg

Emission Segments

Data Center

14 mg

Network

16 mg

Device

35 mg

Resource Breakdown

JavaScript

408.9 KB

Images

65.4 KB

CSS

19.4 KB

Fonts

12.8 KB

HTML

10.2 KB

Other

5.9 KB

Green Hosting Not Verified

ACE

4 recommendations

•Carbon footprint recommendation preview...

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Security Score

0%Critical

Critical / Transactional

HTTPS

No WAF

23d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

TrustAsia Technologies, Inc.

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

22.03.2026

Valid Until

19.06.2026

OCSP Stapling

Enabled

Subject Alternative Names (1)

www.jdon.com

SHA-256 Fingerprint

31:51:B5:CE:D9:FD:15:B8:32:6E:89:DE:9F:46:AD:04:F3:15:43:35...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges

bytes

age

212

cache-control

🟡 600s(public, max-age=600, s-maxage=1200, stale-while-revalidate=3...)

content-encoding

📦 Gzip(gzip)

content-length

10144

content-type

text/html;charset=UTF-8

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

Domain Information

jdon.com

Domain Age

24y 1m

Created

15.04.2002

Expires

15.04.2031

Last Updated

13.06.2023

Registrar

Alibaba Cloud Computing (Beijing) Co., Ltd.

DNSSEC

Not Enabled

Privacy & Compliance

Quantcast Choice

Cookie Consent Banner

Quantcast Choice

GDPR Indicators

Cookie consent banner detected

CMP: Quantcast Choice

Legitimate interest basis 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.

74/100

Mobile Friendly14 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

1 recommendation

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

Microsoft YaHei + Open Sans

WCAG Partial

65/100

Readability

/30

14/30

12px · LH 1.33

Hierarchy

/20

14/20

2.67x ratio

WCAG

/25

19/25

2.65:1 min contrast

Performance

/25

18/25

2 fonts · 3 req

Heading Font

Microsoft YaHei

Sans32px

Body Font

Open Sans

Sans12px

Contrast Ratio

2.65:1

1 issue

Reading Comfort

~39 CPL

Narrow lines

32px

14px

18px

16px

12px

❌ Critical: 12px body text is too small. Minimum 14px, recommend 16px+.

⚠️ Tight line spacing (1.33). Increase to 1.4–1.6 for better readability.

❌ Very complex text: Flesch score 17/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 1 elements below WCAG AA threshold (min 2.6:1).

⚠️ Minor heading issue: 1 level skip(s) detected. Maintain sequential order for screen readers.

✅ Strong hierarchy: Headlines are 2.7x larger than body text.

GGoogle Fonts Buy on MyFontsFlesch 17

Color Palette

7 unique colors

5.74:1 AA Dark

#666666

Other· 52.60000000000001%

#ffffff

Background· 18.799999999999997%

#514c42

Primary· 9.3%

#140e0c

Secondary· 7.1%

#2e462c

Secondary· 6.4%

#68727f

Secondary· 2.2%

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

7 Resources

Scripts

Styles

Async

Defer

Top Script Sources

pagead2.googlesyndication.com(2)fundingchoicesmessages.google.com(2)local(1)

Website Identity

jdon.com

24 years old

Location detected: 🇸🇬 Singaporevia ip

Alibaba Cloud Computing (Beijing) Co., Ltd.zh-CN

Social Profiles

GitHub

Sponsored

Last analyzed: 27 May 2026 at 23:07

Historical Analysis & Change Tracking