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desdev.cn

https://desdev.cn· First analyzed 26 Apr 2026· Updated 26 Apr 2026
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desdev.cn
Desktop screenshot of desdev.cn
Mobile screenshot of desdev.cn
Mobile

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Hosting Provider

YunNan LanDui Network Technology co., LTD

IP Address

43.228.79.42

Site Location

🇨🇳 Chinavia tld

Server Location

🇨🇳 Beijing, China

ASN

AS134765

Organization

YunNan LanDui Network Technology co., LTD

Server

Nginx

Nameservers

ns2.22.cn.ns1.22.cn.

Performance

87

Core Web Vitals

Weight

First Contentful Paint
1.7 s10%
Speed Index
2.2 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
487 KB
24 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Frontend
Styling
Tailwind CSS
Infrastructure
Hosting
YunNan LanDui Network Technology co., LTD

Technology Stack

4 Technologies Detected

CSS Frameworks

2
Bootstrapv5.2.3
Tailwind CSS

Libraries

1
jQuery

Web Servers

1
Nginx

SEO Analysis

D51/100
13
10
1
Meta Tags10/15
Content8/12
Headings7/8
Technical11/21
E-E-A-T0/7
Images1/7
Links5/5
URL5/5
Social0/5
Freshness0/4
Mobile1/4
Indexability3/3
D
desdev.cndesdev.cn

织梦 (DedeCMS) 官方网站 - 内容管理系统 - 上海卓卓网络科技有限公司

织梦 (DedeCMS) 官方网站 - 内容管理系统 - 上海卓卓网络科技有限公司

Title Length41 chars

Recommended: 50-60 chars (~257px / 580px)

Description Length41 chars

Recommended: 120-160 chars

Issues (1)

  • • Most images missing alt text (13/13) — critical for accessibility and SEO

11 issues found

Upgrade to view details

Local SEO

Local Search Readiness

10/100
Poor
3 12 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.
5/25
Schema Data
0/25
Citation
6/25

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
navheader/footer
Text ratio:4%
Words:97
Token eff.:Too Short
Sections/1K:10
Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary
Descriptive Headingsavg 1w
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...
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.
C
65/100
11
Passed
4
Critical
1
Warnings
Images & Alt Text
5/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
17/20
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
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.
3 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.
52/100
A
60 mg
CO₂e / view
486.6 KB
Page Weight
90%
Cleaner Than
New Visitor
69 mg
vs
Returning (cached)
34 mg
Annual (10K/mo)
7.2 kg
Emission Segments
Data Center
13 mg
Network
14 mg
Device
32 mg
Resource Breakdown
JavaScript
58.9 KB
Images
162.2 KB
CSS
261.4 KB
HTML
4.0 KB
Green Hosting Not Verified
YunNan LanDui Network Technology co., LTD
4 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
F

Security Score

0%Critical

No SSL

No WAF

N/A

Upgrade to view header details

HTTP Headers

Developer Console

access-control-allow-headers
DNT,X-Mx-ReqToken,Keep-Alive,User-Agent,X-Requested-With,If-...
access-control-allow-methods
GET, POST, OPTIONS
access-control-allow-origin
*
connection
keep-alive
content-encoding
📦 Gzip(gzip)
content-type
text/html; charset=utf-8
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

45

SPF
DKIM
DMARC

MX Records (2)

mxbiz1.qq.com
mxbiz2.qq.com

Domain Information

desdev.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.
D
59/100
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, shrink-to-fit=no
3 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

-apple-system

WCAG Partial
68/100
Readability
/30
24/30

16px · LH 1.50

Hierarchy
/20
13/20

2.5x ratio

WCAG
/25
10/25

1:1 min contrast

Performance
/25
21/25

System fonts

Heading Font

-apple-system

Sans40px

Body Font

-apple-system

Sans16px

Contrast Ratio

1:1

7 issues

Reading Comfort

~34 CPL

Narrow lines
40px
h1
32px
h2
16px
p

✅ Excellent readability: 16px body text is ideal for all devices.

✅ Optimal line spacing: 1.50 ratio (ideal range 1.4–1.6).

⚠️ Partial contrast: 7 elements below WCAG AA threshold (min 1.0:1).

❌ Broken heading hierarchy: 2 level skip(s). Screen readers rely on sequential headings (h1→h2→h3).

✅ Strong hierarchy: Headlines are 2.5x larger than body text.

❌ Pure vw font sizes: Viewport units alone break browser zoom (WCAG 1.4.4 fail). Use clamp(rem, vw, rem).

Color Palette

8 unique colors
Light
#ffffff
Background· 37.6%
#4b9b03
Primary· 45.1%
#70c411
Accent· 6.7%
#67ad10
Accent· 3.3%
#bcd789
Secondary· 3.2%
#7e8907
Accent· 2.4%
#f8edbd
Accent· 1.2%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

1
Google AnalyticsFree

User behavior and product analytics

1

Categories

1

Total Tools

0

Enterprise

0

Mid-Market

Assessment: Growing marketing technology adoption

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Scripts & Styles

9 Resources

5
Scripts
4
Styles
0
Async
0
Defer

Top Script Sources

local(5)

Website Identity

desdev.cn

021-37788569
Location detected: 🇨🇳 Chinavia tld
zh-CN

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Last analyzed: 26 Apr 2026 at 11:58

Historical Analysis & Change Tracking