vjl.vn

https://vjl.vn· First analyzed 24 May 2026· Updated 24 May 2026

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vjl.vn

Mobile

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

172.67.147.111

Site Location

🇻🇳 Vietnamvia tld

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

art.ns.cloudflare.com.lily.ns.cloudflare.com.

Performance

Core Web Vitals

Weight

First Contentful Paint

1.9 s10%

Speed Index

2.4 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

385 KB

34 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Cloudflare

CDN

Cloudflare

Technology Stack

10 Technologies Detected

Analytics

Google Analytics

Facebook Pixel Segment

CSS Frameworks

Libraries

Icon Libraries

Fonts

Social

CDN

SEO Analysis

D54/100

Meta Tags5/15

Content11/12

Headings1/8

Technical16/25

E-E-A-T0/7

Images1/7

Links5/5

URL5/5

Social3/5

Freshness0/4

Mobile4/4

Indexability3/3

vjl.vnvjl.vn

Diễn Đàn Joomla Việt Nam

Diễn đàn Joomla Việt là nơi hỗ trợ cho cộng đồng Joomla tại Việt Nam

Title Length24 chars

Recommended: 50-60 chars (~147px / 580px)

Description Length68 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (3/4) — critical for accessibility and SEO

9 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

28 rules

Local SEO

Local Search Readiness

7/100

Poor

2 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

D44/100

Bot Access

20/25

Machine Read.

10/25

Schema Data

0/25

Citation

14/25

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

blockquotesdef. listsnavheader/footer

Text ratio:10%

Words:1,699

Token eff.:Optimal

Sections/1K:23.5

Depth:4/5

Structured Data

No Schema

Citation Readiness

Opening Summary24w

Descriptive Headingsavg 3.6w

Canonical URL

Open Graph3/3

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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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.

57/100

Passed

Critical

Warnings

Images & Alt Text

5/20

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

Semantic Structure

17/20

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

Forms & Inputs

13/15

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

6/15

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.

2 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.

65/100

A+

39 mg

CO₂e / view

385.2 KB

Page Weight

90%

Cleaner Than

New Visitor

45 mg

Returning (cached)

22 mg

Annual (10K/mo)

4.7 kg

Emission Segments

Data Center

2 mg

Network

11 mg

Device

26 mg

Resource Breakdown

JavaScript

113.4 KB

Images

5.9 KB

CSS

210.5 KB

Fonts

6.8 KB

HTML

16.2 KB

Other

32.3 KB

Green Hosting Verified

Cloudflare

GWF Verified

4 recommendations

•Carbon footprint recommendation preview...

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Security Score

0%Critical

Critical / Transactional

HTTPS

WAF

49d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Google Trust Services

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-256

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

14.04.2026

Valid Until

13.07.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

vjl.vn*.vjl.vn

SHA-256 Fingerprint

D6:99:E8:EE:9D:46:CD:F3:5A:EA:89:90:6F:E2:ED:8E:AD:B9:F1:EF...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

alt-svc

h3=":443"; ma=86400

cache-control

🟡 0s(private, max-age=0)

cf-cache-status

DYNAMIC

cf-ray

a0102758f9bf8ee4-SOF

content-encoding

zstd

content-type

text/html; charset=UTF-8

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (1)

mail.vjl.vn

Domain Information

vjl.vn

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

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.

63/100

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

Roboto

WCAG Partial

44/100

Readability

/30

12/30

13px · LH 1.28

Hierarchy

/20

7/20

1.85x ratio

WCAG

/25

14/25

3.82:1 min contrast

Performance

/25

11/25

1 font · 4 req

Heading Font

Roboto

Sans24px

Body Font

Roboto

Sans13px

Contrast Ratio

3.82:1

4 issues

Reading Comfort

~48 CPL

Optimal (45–75)

24px

14px

12px

13px

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

⚠️ Tight line spacing (1.28). Increase to 1.4–1.6 for better readability.

✅ Optimal line length: ~48 chars/line (ideal 45–75 CPL).

⚠️ Partial contrast: 4 elements below WCAG AA threshold (min 3.8:1).

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

⚠️ Text justify detected: Justified text creates uneven word spacing, hurting readability on web.

GGoogle Fonts

Color Palette

5 unique colors

Light

#ffffff

Background· 46.99999999999999%

#070f22

Primary· 31.000000000000004%

#527ca2

Secondary· 5.8%

#d2d7db

Secondary· 5%

Business & Marketing Stack

4 Tools Detected

Advanced

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Ad platforms and retargeting pixels

Social Media

AddThisFree

Facebook SDKFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

19 Resources

Scripts

Styles

Async

Defer

Top Script Sources

js(4)connect.facebook.net(2)adcloud.vn(2)apis.google.com(1)google-analytics.com(1)

Website Identity

vjl.vn

Location detected: 🇻🇳 Vietnamvia tld

vi-VN

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Last analyzed: 24 May 2026 at 23:42

Historical Analysis & Change Tracking