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4px.com

https://4px.com· First analyzed 08 May 2026· Updated 08 May 2026
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4px.com
Desktop screenshot of 4px.com
Mobile screenshot of 4px.com
Mobile

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Hosting Provider

Alibaba Cloud
alibabacloud.com

IP Address

120.79.255.21

Site Location

🇨🇳 Chinavia ip

Server Location

🇨🇳 Shenzhen, China

ASN

AS37963

Organization

Aliyun Computing Co., LTD

Server

Nginx

Nameservers

vip3.alidns.com.vip4.alidns.com.ns3.dnsv4.com.ns4.dnsv4.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
100 ms10%
Speed Index
130 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
33 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Frontend
Styling
Bootstrap
Infrastructure
Hosting
Alibaba Cloud

Technology Stack

4 Technologies Detected

CSS Frameworks

2
Bootstrap
Tailwind CSS

Libraries

1
jQuery

Web Servers

1
Nginx

SEO Analysis

D46/100
13
8
2
Meta Tags8/15
Content8/12
Headings1/8
Technical11/21
E-E-A-T0/7
Images1/7
Links5/5
URL5/5
Social0/5
Freshness0/4
Mobile4/4
Indexability3/3
4
4px.com4px.com

4PX递四方速递 For Perfect X-border

递四方是最专业的跨境电子商务物流供应商，提供超值的国际快递、平邮挂号与海外仓储等服务。递四方以全球包裹递送网络（GPN）及全球订单履约网络（GFN）两张网络为基础，提供五大服务，包括：全球订单履约服务、仓储与物流管理系统服务、全球退件解决方案、全球包裹直发服务、以及全球转运进口服务，是细分领域市场服务类型最健全，...

Description truncated.
Title Length29 chars

Recommended: 50-60 chars (~179px / 580px)

Description Length168 chars

Recommended: 120-160 chars

Issues (2)

  • • Missing H1 tag — every page should have exactly one H1
  • • Most images missing alt text (24/25) — critical for accessibility and SEO

10 issues found

Upgrade to view details

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.

Sponsored

AI & LLM Readiness

F27/100
Bot Access
20/25
Machine Read.
4/25
Schema Data
0/25
Citation
3/25

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
header/footer
Text ratio:5%
Words:112
Token eff.:Too Short
Sections/1K:26.8
Depth:1/5

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.
D
51/100
6
Passed
5
Critical
1
Warnings
Images & Alt Text
5/20
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
10/15
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
1/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
4 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.
21/100
F
634 mg
CO₂e / view
5.0 MB
Page Weight
15%
Cleaner Than
New Visitor
724 mg
vs
Returning (cached)
362 mg
Annual (10K/mo)
76.0 kg
Emission Segments
Data Center
142 mg
Network
152 mg
Device
340 mg
Resource Breakdown
JavaScript
859.4 KB
Images
3.9 MB
CSS
195.3 KB
HTML
25.2 KB
Green Hosting Not Verified
Alibaba Cloud
9 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
F

Security Score

21%Critical
Interactive

HTTPS

No WAF

119d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

GlobalSign nv-sa

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/1.1

Valid From

04.08.2025

Valid Until

05.09.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.4px.com4px.com

SHA-256 Fingerprint

64:D8:F7:6F:2B:0A:DE:E0:3D:7F:72:6E:12:43:D0:EC:7E:9E:9E:FB...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations
Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges
bytes
cache-control
🟣 Private(private)
connection
close
content-encoding
📦 Gzip(gzip)
content-type
text/html
date
Fri, 08 May 2026 16:14:28 GMT
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

98

SPF
DKIM
DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (5)

mx3.qiye.aliyun.com
mxn.mxhichina.com
mx1.qiye.aliyun.com
mxw.mxhichina.com

+1 more

Domain Information

4px.com

Domain Age
26y 3m

Created

04.02.2000

Expires

04.02.2027

Last Updated

31.12.2025

Registrar

Bizcn.com, Inc.

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

Privacy policy page linked

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
55/100
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

微软雅黑

WCAG Partial
39/100
Readability
/30
5/30

12px · LH 2.50

Hierarchy
/20
6/20
WCAG
/25
14/25

1.57:1 min contrast

Performance
/25
14/25

1 font

Heading Font

微软雅黑

Sans

Body Font

微软雅黑

Sans12px

Contrast Ratio

1.57:1

5 issues

Reading Comfort

~182 CPL

Too wide
40px
h3
22px
h4
12px
p

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

⚠️ Wide line spacing (2.50). 1.4–1.6 is optimal for body text.

❌ Very long lines: ~182 chars/line causes eye strain. Add max-width constraint.

⚠️ Partial contrast: 5 elements below WCAG AA threshold (min 1.6:1).

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

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

Buy on MyFonts

Color Palette

11 unique colors
4.85:1 AA Light
#f5f5f5
Background· 38%
#666c76
Other· 6.1%
#1768df
Primary· 10.4%
#485363
Secondary· 8.1%
#acb4be
Secondary· 7.4%
#c8ced6
Secondary· 7.2%
#7a8595
Secondary· 6.5%
#8996a7
Secondary· 5.5%

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

13 Resources

9
Scripts
4
Styles
0
Async
1
Defer

Top Script Sources

..(6)szcert.ebs.org.cn(2)hm.baidu.com(1)

Website Identity

4px.com

26 years old
Location detected: 🇨🇳 Chinavia ip
Bizcn.com, Inc.en

Sponsored

Last analyzed: 08 May 2026 at 16:15

Historical Analysis & Change Tracking