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haiphong.edu.vn

https://haiphong.edu.vn· First analyzed 29 May 2026· Updated 29 May 2026
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haiphong.edu.vn
Desktop screenshot of haiphong.edu.vn
Mobile screenshot of haiphong.edu.vn
Mobile

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Hosting Provider

Vietnam Internet Network Information Center

IP Address

42.112.27.241

Site Location

🇻🇳 Vietnamvia tld

Server Location

🇻🇳 Hanoi, Vietnam

ASN

AS18403

Nameservers

ns1.pavietnam.vn.ns2.pavietnam.vn.nsbak.pavietnam.net.

Performance

73

Core Web Vitals

Weight

First Contentful Paint
6.3 s10%
Speed Index
8.1 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
1000 KB
128 requests

Image Optimization

Lazy Load
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Frontend
Styling
Tailwind CSS
Infrastructure
Hosting
Vietnam Internet Network Information Center

Technology Stack

7 Technologies Detected

UI Components

2
SwiperSlick Carousel

CSS Frameworks

2
Bootstrap
Tailwind CSS

Icon Libraries

1
Font Awesome

Fonts

1
Google Fonts

Analytics

1
Facebook Pixel

SEO Analysis

D50/100
12
14
2
Meta Tags8/15
Content10/12
Headings3/8
Technical7/25
E-E-A-T3/7
Images2/7
Links5/5
URL5/5
Social3/5
Freshness0/4
Mobile1/4
Indexability3/3
H
haiphong.edu.vnhaiphong.edu.vn

NGÀNH GIÁO DỤC VÀ ĐÀO TẠO HẢI PHÒNG

Ngành Giáo dục và Đào tạo Hải Phòng

Title Length35 chars

Recommended: 50-60 chars (~229px / 580px)

Description Length35 chars

Recommended: 120-160 chars

Issues (2)

  • • Most images missing alt text (185/192) — critical for accessibility and SEO
  • • Missing viewport meta tag — page may not be mobile-friendly (Google uses mobile-first indexing)

16 issues found

Upgrade to view details

Crawlability

Sitemap
robots.txt

7 rules

Local SEO

Local Search Readiness

5/100
Poor
1 14 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

F34/100
Bot Access
20/25
Machine Read.
4/25
Schema Data
0/25
Citation
10/25

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
blockquotesnav
Text ratio:7%
Words:11,757
Token eff.:Excessive
Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary291w
Descriptive Headings
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.
C
60/100
8
Passed
5
Critical
2
Warnings
Images & Alt Text
10/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
10/20
Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
Forms & Inputs
7/15
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
9/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
4 recommendations
  • •Accessibility recommendation preview...
Upgrade to view recommendations

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.
42/100
B
124 mg
CO₂e / view
999.8 KB
Page Weight
70%
Cleaner Than
New Visitor
141 mg
vs
Returning (cached)
71 mg
Annual (10K/mo)
14.8 kg
Emission Segments
Data Center
28 mg
Network
30 mg
Device
66 mg
Resource Breakdown
JavaScript
296.7 KB
Images
359.1 KB
CSS
256.4 KB
Fonts
5.1 KB
HTML
82.6 KB
Green Hosting Not Verified
Vietnam Internet Network Information Center
5 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
D

Security Score

46%Poor
Interactive

HTTPS

No WAF

41d

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

10.07.2025

Valid Until

09.07.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.haiphong.edu.vnhaiphong.edu.vn

SHA-256 Fingerprint

31:07:45:50:26:CA:6C:29:80:42:96:10:31:DF:EB:41:D0:1C:C3:29...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

cache-control
🟣 Private(private)
content-encoding
📦 Gzip(gzip)
content-length
645
content-type
text/html; charset=utf-8
date
Fri, 29 May 2026 09:57:07 GMT
strict-transport-security
max-age=31536000
Good Warning Issue

Email Infrastructure

Google Workspace

Score

45

SPF
DKIM
DMARC

MX Records (5)

aspmx3.googlemail.com
aspmx2.googlemail.com
alt2.aspmx.l.google.com
aspmx.l.google.com

+1 more

Domain Information

haiphong.edu.vn

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

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
47/100
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.
2 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Open Sans

WCAG AA
69/100
Readability
/30
19/30

15px · LH 1.33

Hierarchy
/20
13/20

2.67x ratio

WCAG
/25
17/25

5.02:1 min contrast

Performance
/25
20/25

1 font · 3 req

Heading Font

Open Sans

Sans40px

Body Font

Open Sans

Sans15px

Contrast Ratio

5.02:1

WCAG AA (≥4.5:1)

Reading Comfort

Single Font Family

left aligned
40px
h1
15px
h4
15px
p

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

⚠️ Tight line spacing (1.33). Increase to 1.4–1.6 for better readability.

❌ 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).

❌ Broken heading hierarchy: 2 level skip(s). Screen readers rely on sequential headings (h1→h2→h3).

✅ Strong hierarchy: Headlines are 2.7x larger than body text.

GGoogle FontsFlesch 0

Color Palette

11 unique colors
Light
#ffffff
Background· 45.300000000000004%
#0f69d0
Primary· 13.2%
#ad3239
Accent· 7.1%
#e6eaed
Secondary· 6.8%
#faf5e4
Accent· 4.9%
#81a5ba
Secondary· 4.8%
#ddccb9
Secondary· 4.3%
#647992
Secondary· 4%

Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

1
Google AnalyticsFree

User behavior and product analytics

Advertising

1
Facebook PixelMid-Market

Ad platforms and retargeting pixels

Social Media

1
Facebook SDKFree

Social widgets and sharing tools

3

Categories

3

Total Tools

0

Enterprise

1

Mid-Market

Assessment: Well-developed marketing technology stack

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Scripts & Styles

30 Resources

20
Scripts
10
Styles
2
Async
1
Defer

Top Script Sources

local(15)za.zdn.vn(1)f-emc.ngsp.gov.vn(1)connect.facebook.net(1)translate.googleapis.com(1)

Website Identity

haiphong.edu.vn

Location detected: 🇻🇳 Vietnamvia tld
📧 Google Workspace

Social Profiles

Facebook

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Last analyzed: 29 May 2026 at 10:00

Historical Analysis & Change Tracking