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hanoi.edu.vn

https://hanoi.edu.vn· First analyzed 24 May 2026· Updated 24 May 2026
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hanoi.edu.vn
Desktop screenshot of hanoi.edu.vn
Mobile screenshot of hanoi.edu.vn
Mobile

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Hosting Provider

Site Location

🇻🇳 Vietnamvia tld

Performance

74

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

2

UI Components

1

Icon Libraries

1

SEO Analysis

D51/100
12
13
2
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
H
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)

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.

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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.
D
58/100
5
Passed
7
Critical
1
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...

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
C
171 mg
CO₂e / view
1.4 MB
Page Weight
60%
Cleaner Than
New Visitor
196 mg
vs
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...
D

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

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

50

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.
D
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...

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
h1
28px
h3
16px
p

✅ 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).

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

1

User behavior and product analytics

1

Categories

1

Total Tools

0

Enterprise

0

Mid-Market

Assessment: Growing marketing technology adoption

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Scripts & Styles

28 Resources

18
Scripts
10
Styles
2
Async
4
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

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Last analyzed: 24 May 2026 at 16:47

Historical Analysis & Change Tracking