vlongbiz.com

https://vlongbiz.com· First analyzed 15 Jun 2026· Updated 15 Jun 2026

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vlongbiz.com

Mobile

Sponsored

Hosting Provider

Alibaba Cloud

alibabacloud.com

IP Address

8.130.149.130

Site Location

🇨🇳 Chinavia ip

Server Location

🇨🇳 Beijing, China

ASN

AS37963

Organization

Aliyun Computing Co.

Server

Nginx

Nameservers

f1g1ns2.dnspod.net.f1g1ns1.dnspod.net.

Performance

Core Web Vitals

Weight

First Contentful Paint

9.2 s10%

Speed Index

11.9 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

46 KB

77 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Alibaba Cloud

Technology Stack

3 Technologies Detected

Libraries

jQueryv1.5.2

CSS Frameworks

Tailwind CSS

Web Servers

Nginx

SEO Analysis

D45/100

Meta Tags9/15

Content11/12

Headings0/8

Technical8/25

E-E-A-T0/7

Images1/7

Links4/5

URL5/5

Social0/5

Freshness0/4

Mobile4/4

Indexability3/3

vlongbiz.comvlongbiz.com

威龙商务网-中国领先的一站式B2B电子商务服务平台

威龙商务网是中国领先的一站式B2B电子商务服务平台，汇集各行各业的优质生产商,制造商,供应商等,致力于创新技术的研发、打造电子商务领域的领先品牌，为中国企业提供最新的商机资讯、行业信息、企业自主建站、商人社区等商务服务，是您首选的网上贸易平台。

Title Length25 chars

Recommended: 50-60 chars (~155px / 580px)

Description Length122 chars

Recommended: 120-160 chars

Issues (3)

• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (60/61) — critical for accessibility and SEO
• Missing viewport meta tag — page may not be mobile-friendly (Google uses mobile-first indexing)

11 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

robots.txt

7 rules

Local SEO

Local Search Readiness

0/100

Poor

15 2

This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

Sponsored

AI & LLM Readiness

F34/100

Bot Access

20/25

Machine Read.

13/25

Schema Data

0/25

Citation

1/25

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

def. lists

Text ratio:7%

Words:1,356

Token eff.:Optimal

Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary

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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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.

44/100

Passed

Critical

Warnings

Images & Alt Text

10/20

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

Semantic Structure

3/20

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

5/15

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.

5 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.

48/100

A+

6 mg

CO₂e / view

46.5 KB

Page Weight

95%

Cleaner Than

New Visitor

7 mg

Returning (cached)

3 mg

Annual (10K/mo)

684 g

Emission Segments

Data Center

1 mg

Network

1 mg

Device

3 mg

Resource Breakdown

Images

28.5 KB

HTML

18.0 KB

Green Hosting Not Verified

Alibaba Cloud

4 recommendations

•Carbon footprint recommendation preview...

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Security Score

21%Critical

Interactive

HTTPS

No WAF

77d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

03.06.2026

Valid Until

01.09.2026

Subject Alternative Names (2)

*.vlongbiz.comvlongbiz.com

SHA-256 Fingerprint

CC:6F:E9:E4:FA:66:08:DC:75:A4:1D:18:B1:81:C4:A9:B9:F8:F5:AF...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

connection

keep-alive

content-encoding

📦 Gzip(gzip)

content-type

text/html;charset=UTF-8

date

Mon, 15 Jun 2026 16:19:17 GMT

server

nginx

transfer-encoding

chunked

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (2)

qiye163mx01.mxmail.netease.com

qiye163mx02.mxmail.netease.com

Domain Information

vlongbiz.com

Domain Age

22y 3m

Created

29.02.2004

Expires

28.02.2027

Last Updated

06.02.2026

Registrar

Xiamen 35.com Information 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.

32/100

Not 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.

3 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Microsoft Yahei

WCAG Partial

47/100

Readability

/30

10/30

13px · LH 1.85

Hierarchy

/20

9/20

WCAG

/25

14/25

2.54:1 min contrast

Performance

/25

14/25

1 font

Heading Font

Microsoft Yahei

Body Font

Microsoft Yahei

Sans13px

Contrast Ratio

2.54:1

22 issues

Reading Comfort

Single Family

left aligned

13px

❌ Critical: 13px body text is too small. Minimum 14px, recommend 16px+.

⚠️ Wide line spacing (1.85). 1.4–1.6 is optimal for body text.

⚠️ Partial contrast: 22 elements below WCAG AA threshold (min 2.5:1).

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

⚠️ Missing font-display: swap — users may see invisible text while fonts load (FOIT).

Buy on MyFonts

Color Palette

8 unique colors

Light

#ffffff

Background· 48.00000000000001%

#fedee4

Primary· 26.5%

#a0adbc

Secondary· 5.3%

#3b83da

Accent· 5.2%

#4c3541

Secondary· 5.1%

#e4cdce

Secondary· 4.2%

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Scripts & Styles

13 Resources

Scripts

Styles

Async

Defer

Top Script Sources

vlongbiz.com(8)hm.baidu.com(1)demo.wl369.com(1)

Website Identity

vlongbiz.com

22 years old

Location detected: 🇨🇳 Chinavia ip

Xiamen 35.com Information Co., Ltd.

Sponsored

Last analyzed: 15 Jun 2026 at 16:20

Historical Analysis & Change Tracking