tnu.edu.vn

https://tnu.edu.vn· First analyzed 03 May 2026· Updated 03 May 2026

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tnu.edu.vn

Mobile

Sponsored

Hosting Provider

Vietnam Internet Network Information Center

IP Address

210.245.107.5

Site Location

🇻🇳 Vietnamvia tld

Server Location

🇻🇳 Hanoi, Vietnam

ASN

AS18403

Organization

Vietnam Internet Network Information Center

Server

Nginx

Nameservers

ns-b1.tenten.vn.ns-b3.tenten.vn.ns-b2.tenten.vn.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

302 ms10%

Speed Index

393 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

50 KB

54 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Vietnam Internet Network Information Center

Technology Stack

6 Technologies Detected

Other

UI Components

CSS Frameworks

Icon Libraries

Web Servers

Customer Support

SEO Analysis

D58/100

Meta Tags5/15

Content11/12

Headings1/8

Technical18/25

E-E-A-T3/7

Images1/7

Links5/5

URL5/5

Social3/5

Freshness2/4

Mobile1/4

Indexability3/3

tnu.edu.vntnu.edu.vn

Đại học Thái Nguyên

Title Length19 chars

Recommended: 50-60 chars (~113px / 580px)

Description Length19 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (33/49) — critical for accessibility and SEO

11 issues found

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Crawlability

Sitemap

Type: standard

5,306 URLs

robots.txt

9 rules

Local SEO

Local Search Readiness

22/100

Needs Work

6 9 2

Sponsored

AI & LLM Readiness

F37/100

Bot Access

20/25

Machine Read.

2/25

Schema Data

0/25

Citation

15/25

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

nav

Text ratio:7%

Words:4,124

Token eff.:Poor Structure

Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary

Descriptive Headingsavg 3w

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.

67/100

Passed

Critical

Warnings

Images & Alt Text

20/20

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

Semantic Structure

9/20

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

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.

61/100

A+

6 mg

CO₂e / view

49.8 KB

Page Weight

95%

Cleaner Than

New Visitor

7 mg

Returning (cached)

4 mg

Annual (10K/mo)

744 g

Emission Segments

Data Center

1 mg

Network

2 mg

Device

3 mg

Resource Breakdown

HTML

49.8 KB

Green Hosting Not Verified

Vietnam Internet Network Information Center

4 recommendations

•Carbon footprint recommendation preview...

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Security Score

46%Poor

Interactive

HTTPS

No WAF

334d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

GlobalSign nv-sa

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/2

Valid From

02.03.2026

Valid Until

03.04.2027

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.tnu.edu.vntnu.edu.vn

SHA-256 Fingerprint

25:C6:10:A4:48:3C:DF:D1:01:2E:25:EA:B0:76:7A:13:1D:E3:A1:EC...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

access-control-allow-credentials

true

access-control-allow-headers

Accept,Authorization,Cache-Control,Content-Type,DNT,If-Modif...

access-control-allow-methods

GET, POST, HEAD

access-control-allow-origin

tnu.edu.vn

cache-control

🔴 No Cache(no-store, no-cache, must-revalidate)

content-encoding

📦 Gzip(gzip)

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

MX Records (9)

ASPMX2.GOOGLEMAIL.COM

mail.tnu.edu.vn

LY2ZJESDILHKFXPDZZGZHUPRGETOWHVTRJGPK3ZUAEWCKIZRQKDQ.MX-VERIFICATION.GOOGLE.COM

ALT1.ASPMX.L.GOOGLE.COM

+5 more

Domain Information

tnu.edu.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.

67/100

Mobile Friendly26 breakpoints

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=1.0, user-scalable=no

2 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Inter-Bold + Inter

WCAG Partial

61/100

Readability

/30

24/30

16px · LH 1.40

Hierarchy

/20

5/20

WCAG

/25

16/25

2.84:1 min contrast

Performance

/25

16/25

2 fonts · 4 req

Heading Font

Inter-Bold

Sans

Body Font

Inter

Sans16px

Contrast Ratio

2.84:1

17 issues

Reading Comfort

~42 CPL

Narrow lines

24px

18px

16px

✅ Excellent readability: 16px body text is ideal for all devices.

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

⚠️ Partial contrast: 17 elements below WCAG AA threshold (min 2.8:1).

❌ 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.

✅ Lean font stack: 2 font families keeps load times fast.

Buy on MyFonts

Color Palette

12 unique colors

Light

#ffffff

Background· 19.099999999999998%

#497abb

Primary· 25%

#a35258

Secondary· 7.5%

#261e25

Secondary· 6.8%

#901a24

Accent· 6.4%

#e5e9f4

Secondary· 5.1%

#7b8597

Secondary· 4.6%

#8ca3bd

Secondary· 4.3%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

10 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(1)

Website Identity

tnu.edu.vn

vanphong.dhtn@moet.edu.vn

02083 852 650

Location detected: 🇻🇳 Vietnamvia tld

📧 Google Workspacevi

Social Profiles

Facebook

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Last analyzed: 03 May 2026 at 09:05

Historical Analysis & Change Tracking