vass.gov.vn

https://vass.gov.vn· First analyzed 06 May 2026· Updated 06 May 2026

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vass.gov.vn

Mobile

Sponsored

Hosting Provider

VNPT

IP Address

14.225.24.80

Site Location

🇻🇳 Vietnamvia tld

Server Location

🇻🇳 Hanoi, Vietnam

ASN

AS135905

Organization

VNPT

Nameservers

nsbak.dotvndns.com.ns1.dotvndns.vn.ns2.dotvndns.vn.

Performance

Core Web Vitals

Weight

First Contentful Paint

5.4 s10%

Speed Index

7.0 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

1.4 MB

120 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Bootstrap

CMS

Drupal

Infrastructure

Hosting

VNPT

Technology Stack

7 Technologies Detected

CSS Frameworks

Libraries

Icon Libraries

Customer Support

SEO Analysis

D41/100

Meta Tags8/15

Content3/12

Headings1/8

Technical13/25

E-E-A-T0/7

Images2/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile1/4

Indexability3/3

vass.gov.vnvass.gov.vn

Viện Hàn lâm Khoa học xã hội Việt Nam

Title Length37 chars

Recommended: 50-60 chars (~226px / 580px)

Description Length37 chars

Recommended: 120-160 chars

Issues (3)

• Very thin content (9 words). Search engines need substantial content for ranking.
• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (107/127) — critical for accessibility and SEO

13 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

2 rules

Allows all crawlers

Local SEO

Local Search Readiness

3/100

Poor

1 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

F22/100

Bot Access

20/25

Machine Read.

0/25

Schema Data

0/25

Citation

2/25

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:4%

Words:6,087

Token eff.:Excessive

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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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.

66/100

Passed

Critical

Warnings

Images & Alt Text

20/20

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

Semantic Structure

6/20

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

Forms & Inputs

15/15

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.

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.

32/100

173 mg

CO₂e / view

1.4 MB

Page Weight

60%

Cleaner Than

New Visitor

197 mg

Returning (cached)

99 mg

Annual (10K/mo)

20.7 kg

Emission Segments

Data Center

39 mg

Network

41 mg

Device

93 mg

Resource Breakdown

JavaScript

709.8 KB

CSS

20.2 KB

HTML

664.4 KB

Other

441 B

Green Hosting Not Verified

VNPT

7 recommendations

•Carbon footprint recommendation preview...

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Security Score

0%Critical

Critical / Transactional

HTTPS

No WAF

242d

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

03.12.2025

Valid Until

04.01.2027

OCSP Stapling

Enabled

Subject Alternative Names (2)

vass.gov.vn*.vass.gov.vn

SHA-256 Fingerprint

4E:8E:80:F5:15:D4:83:5F:DF:C8:87:00:B8:5D:52:D1:A7:8C:48:04...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

🟣 Private(private)

content-length

680008

content-type

text/html

date

Wed, 06 May 2026 08:08:10 GMT

fcache

5/6/2026 2:56:03 PM

strict-transport-security

max-age=31536000

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (2)

b.mx.hostvn.email

a.mx.hostvn.email

Domain Information

vass.gov.vn

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.

69/100

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=0.95, maximum-scale=3, user-scalable=yes

1 recommendation

•Mobile compatibility recommendation preview...

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Typography & Readability

Merriweather + Roboto

WCAG Partial

54/100

Readability

/30

14/30

15px · LH 1.40

Hierarchy

/20

4/20

WCAG

/25

16/25

1:1 min contrast

Performance

/25

20/25

System fonts

Heading Font

Merriweather

Serif

Body Font

Roboto

Sans15px

Contrast Ratio

1:1

10 issues

Reading Comfort

~149 CPL

Too wide

15px

⚠️ Small text: 15px may strain on mobile. Use ≥16px for WCAG compliance.

✅ Optimal line spacing: 1.40 ratio (ideal range 1.4–1.6).

❌ Very long lines: ~149 chars/line causes eye strain. Add max-width constraint.

❌ Very complex text: Flesch score 24/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 10 elements below WCAG AA threshold (min 1.0:1).

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

Buy on MyFontsFlesch 24

Color Palette

11 unique colors

2.76:1 Fail Light

#ffffff

Background· 34.6%

#979d9c

Other· 5.3%

#044081

Primary· 16.4%

#b76341

Secondary· 7.5%

#1e67b0

Accent· 7.2%

#c61712

Accent· 7%

#bdcdd1

Secondary· 6.3%

#951614

Accent· 5.9%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(19)f-emc.ngsp.gov.vn(1)

Website Identity

vass.gov.vn

Location detected: 🇻🇳 Vietnamvia tld

Social Profiles

Facebook

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Last analyzed: 06 May 2026 at 08:09

Historical Analysis & Change Tracking