hanoi.edu.vn

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

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hanoi.edu.vn

Mobile

Sponsored

Hosting Provider

Unknown Provider

Site Location

🇻🇳 Vietnamvia tld

Performance

Core Web Vitals

Weight

First Contentful Paint

3.7 s10%

Speed Index

4.8 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

1.4 MB

64 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Bootstrap

Technology Stack

5 Technologies Detected

CSS Frameworks

UI Components

Icon Libraries

Fonts

SEO Analysis

D51/100

Meta Tags8/15

Content11/12

Headings3/8

Technical7/25

E-E-A-T3/7

Images2/7

Links5/5

URL5/5

Social3/5

Freshness0/4

Mobile1/4

Indexability3/3

hanoi.edu.vnhanoi.edu.vn

SỞ GIÁO DỤC VÀ ĐÀO TẠO THÀNH PHỐ HÀ NỘI

Sở Giáo dục và Đào tạo thành phố Hà Nội

Title Length39 chars

Recommended: 50-60 chars (~248px / 580px)

Description Length39 chars

Recommended: 120-160 chars

Issues (2)

• Most images missing alt text (68/71) — critical for accessibility and SEO
• Missing viewport meta tag — page may not be mobile-friendly (Google uses mobile-first indexing)

15 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

7 rules

Local SEO

Local Search Readiness

1/100

Poor

16 2

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

Sponsored

AI & LLM Readiness

D42/100

Bot Access

20/25

Machine Read.

10/25

Schema Data

0/25

Citation

12/25

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:12%

Words:3,646

Token eff.:Good

Sections/1K:2.7

Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary11w

Descriptive Headingsavg 16.1w

Canonical URL

Open Graph3/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (9)

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.

58/100

Passed

Critical

Warnings

Images & Alt Text

15/20

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

Semantic Structure

8/20

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

7/15

Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).

ARIA & Roles

3/15

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.

27/100

171 mg

CO₂e / view

1.4 MB

Page Weight

60%

Cleaner Than

New Visitor

196 mg

Returning (cached)

98 mg

Annual (10K/mo)

20.6 kg

Emission Segments

Data Center

38 mg

Network

41 mg

Device

92 mg

Resource Breakdown

JavaScript

342.9 KB

Images

27.3 KB

CSS

868.8 KB

Fonts

2.4 KB

HTML

144.0 KB

Green Hosting Not Verified

6 recommendations

•Carbon footprint recommendation preview...

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Security Score

46%Poor

Interactive

HTTPS

No WAF

242d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

DigiCert Inc

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/1.1

Valid From

22.01.2026

Valid Until

21.01.2027

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.hanoi.edu.vnhanoi.edu.vn

SHA-256 Fingerprint

86:2C:0F:59:D5:19:72:3E:FB:2A:14:FA:66:9F:F0:FC:19:66:5D:6A...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

🟣 Private(private)

content-length

824

content-type

text/html; charset=utf-8

date

Sun, 24 May 2026 16:49:33 GMT

strict-transport-security

max-age=31536000

x-content-type-options

nosniff

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

MX Records (1)

hanoi-edu-vn.mail.protection.outlook.com

Domain Information

hanoi.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.

46/100

Not Mobile Friendly3 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.

3 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Roboto

WCAG Partial

61/100

Readability

/30

22/30

16px · LH 1.50

Hierarchy

/20

12/20

1.88x ratio

WCAG

/25

12/25

1:1 min contrast

Performance

/25

15/25

1 font · 2 req

Heading Font

Roboto

Sans30px

Body Font

Roboto

Sans16px

Contrast Ratio

1:1

9 issues

Reading Comfort

Single Font Family

left aligned

30px

28px

16px

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

✅ Optimal line spacing: 1.50 ratio (ideal range 1.4–1.6).

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

⚠️ Partial contrast: 9 elements below WCAG AA threshold (min 1.0:1).

⚠️ Minor heading issue: 1 level skip(s) detected. Maintain sequential order for screen readers.

❌ Pure vw font sizes: Viewport units alone break browser zoom (WCAG 1.4.4 fail). Use clamp(rem, vw, rem).

GGoogle FontsFlesch 0

Color Palette

11 unique colors

Light

#ffffff

Background· 27%

#8a564c

Secondary· 7.9%

#d9e2e4

Secondary· 7.3%

#3799eb

Accent· 7.2%

#0b51b9

Primary· 6.8%

#2785d9

Accent· 6.4%

#26293f

Secondary· 6.2%

#baa89c

Secondary· 6%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

28 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(12)za.zdn.vn(1)f-emc.ngsp.gov.vn(1)translate.googleapis.com(1)ff.kis.v2.scr.kaspersky-labs.com(1)

Website Identity

hanoi.edu.vn

Location detected: 🇻🇳 Vietnamvia tld

📧 Microsoft 365

Sponsored

Last analyzed: 24 May 2026 at 16:47

Historical Analysis & Change Tracking