vjph.vn

https://vjph.vn· First analyzed 17 May 2026· Updated 17 May 2026

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vjph.vn

Mobile

Sponsored

Hosting Provider

NHANHOA

IP Address

103.28.36.189

Site Location

🇻🇳 Vietnamvia tld

Server Location

🇻🇳 Đống Đa, Vietnam

ASN

AS131353

Organization

NHANHOA

Server

LiteSpeed

Nameservers

ns2.zonedns.vn.ns1.zonedns.vn.ns4.zonedns.vn.ns3.zonedns.vn.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

257 ms10%

Speed Index

334 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

2.4 MB

64 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

NHANHOA

Technology Stack

9 Technologies Detected

Analytics

Libraries

CSS Frameworks

Fonts

Customer Support

Web Servers

Languages

SEO Analysis

D49/100

Meta Tags8/15

Content12/12

Headings3/8

Technical9/25

E-E-A-T0/7

Images1/7

Links4/5

URL5/5

Social0/5

Freshness0/4

Mobile4/4

Indexability3/3

vjph.vnvjph.vn

Vietnam Journal of Public Health

Vietnam Journal of public health

Title Length32 chars

Recommended: 50-60 chars (~190px / 580px)

Description Length32 chars

Recommended: 120-160 chars

Issues (3)

• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (10/14) — critical for accessibility and SEO
• Missing viewport meta tag — page may not be mobile-friendly (Google uses mobile-first indexing)

13 issues found

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Crawlability

Sitemap

robots.txt

2 rules

Allows all crawlers

Local SEO

Local Search Readiness

8/100

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

F34/100

Bot Access

20/25

Machine Read.

8/25

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

Text ratio:22%

Words:1,056

Token eff.:Optimal

Sections/1K:4.7

Structured Data

No Schema

Citation Readiness

Opening Summary87w

Descriptive Headingsavg 2w

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...

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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.

45/100

Passed

Critical

Warnings

Images & Alt Text

5/20

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

Semantic Structure

7/20

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.

4 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.

15/100

298 mg

CO₂e / view

2.4 MB

Page Weight

30%

Cleaner Than

New Visitor

341 mg

Returning (cached)

170 mg

Annual (10K/mo)

35.8 kg

Emission Segments

Data Center

67 mg

Network

72 mg

Device

160 mg

Resource Breakdown

JavaScript

164.1 KB

Images

2.2 MB

CSS

25.3 KB

HTML

6.1 KB

Green Hosting Not Verified

NHANHOA

7 recommendations

•Carbon footprint recommendation preview...

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Security Score

0%Critical

Critical / Transactional

HTTPS

No WAF

71d

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/2+H3

Valid From

28.04.2026

Valid Until

27.07.2026

Subject Alternative Names (2)

vjph.vnwww.vjph.vn

SHA-256 Fingerprint

85:20:57:CF:B3:A9:A0:18:72:B8:85:18:61:29:9C:9F:05:54:A6:BC...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

🔴 No Cache(no-store)

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=utf-8

date

Sun, 17 May 2026 11:36:55 GMT

server

LiteSpeed

vary

Accept-Encoding

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

Domain Information

vjph.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.

29/100

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

Times New Roman

WCAG AA

54/100

Readability

/30

16/30

14px · LH 1.25

Hierarchy

/20

5/20

WCAG

/25

19/25

5.04:1 min contrast

Performance

/25

14/25

1 font

Heading Font

Times New Roman

Serif

Body Font

Times New Roman

Serif14px

Contrast Ratio

5.04:1

WCAG AA (≥4.5:1)

Reading Comfort

~64 CPL

Optimal (45–75)

22px

14px

⚠️ Small text: 14px may strain on mobile. Use ≥16px for WCAG compliance.

⚠️ Tight line spacing (1.25). Increase to 1.4–1.6 for better readability.

✅ Optimal line length: ~64 chars/line (ideal 45–75 CPL).

❌ Very complex text: Flesch score 0/100. Consider shorter sentences and simpler words.

✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 5.0:1).

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

Buy on MyFontsFlesch 0

Color Palette

9 unique colors

Light

#919389

Other· 6.6%

#f1f0ec

Primary· 58.5%

#0a8784

Accent· 6.3%

#9fb3a6

Secondary· 6.3%

#e1dcd3

Secondary· 5.9%

#40625a

Secondary· 5.7%

#244035

Secondary· 3.8%

#066385

Accent· 1.8%

Business & Marketing Stack

2 Tools Detected

Growing

Customer Support

Tawk.toFree

Live chat and helpdesk tools

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

28 Resources

Scripts

Styles

Async

Defer

Top Script Sources

vjph.vn(16)embed.tawk.to(1)google-analytics.com(1)translate.googleapis.com(1)google.com(1)

Website Identity

vjph.vn

tapchiytcc@vpha.org.vn

Location detected: 🇻🇳 Vietnamvia tld

en-US

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Last analyzed: 17 May 2026 at 11:37

Historical Analysis & Change Tracking