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lffdj.com

https://lffdj.com· First analyzed 14 May 2026· Updated 14 May 2026
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lffdj.com
Desktop screenshot of lffdj.com
Mobile screenshot of lffdj.com
Mobile

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Hosting Provider

Alibaba Cloud
alibabacloud.com

IP Address

120.25.159.130

Site Location

🇨🇳 Chinavia ip

Server Location

🇨🇳 Shenzhen, China

ASN

AS37963

Organization

Alibaba.com LLC

Server

IIS

Nameservers

dns32.hichina.com.dns31.hichina.com.

Performance

88

Core Web Vitals

Weight

First Contentful Paint
1.6 s10%
Speed Index
2.1 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
1.6 MB
30 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Frontend
Styling
Tailwind CSS
Infrastructure
Hosting
Alibaba Cloud

Technology Stack

4 Technologies Detected

CSS Frameworks

2
Bootstrap
Tailwind CSS

Web Servers

1
Microsoft IIS

Icon Libraries

1
Material Icons

SEO Analysis

D50/100
14
10
1
Meta Tags9/15
Content7/12
Headings3/8
Technical11/21
E-E-A-T3/7
Images1/7
Links4/5
URL5/5
Social0/5
Freshness0/4
Mobile4/4
Indexability3/3
L
lffdj.comlffdj.com

珠海无界科技有限公司

珠海无界科技有限公司是一家专注于物联网系统、人才管理系统及拼团等互联网相关软件开发的企业。我们致力于为客户提供创新、高效的软件解决方案，助力企业实现数字化转型和业务增长。无论您是需要物联网技术应用、人才招聘管理还是拼团电商平台，我们都能为您量身定制专业的解决方案，共同开创数字化时代的新未来。

Title Length10 chars

Recommended: 50-60 chars (~62px / 580px)

Description Length146 chars

Recommended: 120-160 chars

Issues (1)

  • • Most images missing alt text (6/10) — critical for accessibility and SEO

11 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

robots.txt

Local SEO

Local Search Readiness

6/100
Poor
2 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

F35/100
Bot Access
20/25
Machine Read.
10/25
Schema Data
0/25
Citation
5/25

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.txtinvalid
llms-full.txt
Semantic HTML
Heading Hierarchy
nav
Text ratio:6%
Words:62
Token eff.:Too Short
Sections/1K:70
Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary
Descriptive Headingsavg 1.4w
Canonical URL
Open Graph0/3
Twitter Card0/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (10)
AI readiness recommendation preview...
Upgrade to view recommendations

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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.
D
59/100
7
Passed
5
Critical
1
Warnings
Images & Alt Text
15/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
11/20
Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
Forms & Inputs
5/15
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.
38/100
C
203 mg
CO₂e / view
1.6 MB
Page Weight
60%
Cleaner Than
New Visitor
232 mg
vs
Returning (cached)
116 mg
Annual (10K/mo)
24.3 kg
Emission Segments
Data Center
45 mg
Network
49 mg
Device
109 mg
Resource Breakdown
JavaScript
54.2 KB
Images
302.1 KB
CSS
1.2 MB
HTML
5.1 KB
Green Hosting Not Verified
Alibaba Cloud
3 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
F

Security Score

21%Critical
Interactive

HTTPS

No WAF

44d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (3072 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/2

Valid From

30.03.2026

Valid Until

28.06.2026

Subject Alternative Names (2)

lffdj.comwww.lffdj.com

SHA-256 Fingerprint

99:8B:C4:79:9F:B5:C3:D9:DC:F3:5B:90:6D:61:E0:D0:0F:13:B7:EE...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges
bytes
cache-control
🔴 No Cache(no-cache)
content-encoding
📦 Gzip(gzip)
content-length
4945
content-type
text/html
date
Thu, 14 May 2026 04:32:20 GMT
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

50

SPF
DKIM
DMARC

MX Records (2)

mxn.mxhichina.com
mxw.mxhichina.com

Domain Information

lffdj.com

Domain Age
14y 1m

Created

21.03.2012

Expires

21.03.2029

Last Updated

08.08.2023

Registrar

Alibaba Cloud Computing (Beijing) Co., Ltd.

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.
C
64/100
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
2 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Open Sans

WCAG Partial
56/100
Readability
/30
18/30

16px · LH 1.88

Hierarchy
/20
11/20

3.25x ratio

WCAG
/25
14/25

1:1 min contrast

Performance
/25
13/25

1 font · 6 req

Heading Font

Open Sans

Sans52px

Body Font

Open Sans

Sans16px

Contrast Ratio

1:1

30 issues

Reading Comfort

~37 CPL

Narrow lines
52px
h1
28px
h3
16px
p

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

⚠️ Wide line spacing (1.88). 1.4–1.6 is optimal for body text.

⚠️ Partial contrast: 30 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 3.2x larger than body text.

✅ Lean font stack: 1 font families keeps load times fast.

Buy on MyFonts

Color Palette

3 unique colors
Light
#536cca
Primary· 75.8%
#e4e8f2
Secondary· 7.1%

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

js(5)

Website Identity

lffdj.com

14 years old
Location detected: 🇨🇳 Chinavia ip
Alibaba Cloud Computing (Beijing) Co., Ltd.en

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Last analyzed: 14 May 2026 at 04:32

Historical Analysis & Change Tracking