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giaoducthoidai.vn

https://giaoducthoidai.vn· First analyzed 01 May 2026· Updated 01 May 2026
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giaoducthoidai.vn
Desktop screenshot of giaoducthoidai.vn
Mobile screenshot of giaoducthoidai.vn
Mobile

Sponsored

Hosting Provider

Vietnam Internet Network Information Center

IP Address

42.112.59.46

Site Location

🇻🇳 Vietnamvia phone

Server Location

🇻🇳 Hanoi, Vietnam

ASN

AS18403

CDN

Cloudflare

WAF

Cloudflare

Nameservers

yevgen.ns.cloudflare.com.gail.ns.cloudflare.com.

Performance

75

Core Web Vitals

Weight

First Contentful Paint
3.3 s10%
Speed Index
4.2 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
39 KB
37 requests

Image Optimization

Lazy LoadAVIFResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Vietnam Internet Network Information Center
CDN
Cloudflare

Technology Stack

6 Technologies Detected

Analytics

3
Google Analytics
Google Analytics 4
Facebook Pixel

CSS Frameworks

2
Bootstrap
Tailwind CSS

Fonts

1
Google Fonts

SEO Analysis

A84/100
27
5
0
Meta Tags8/15
Content10/12
Headings8/8
Technical24/25
E-E-A-T7/7
Images7/7
Links4/5
URL5/5
Social5/5
Freshness2/4
Mobile1/4
Indexability3/3
G
giaoducthoidai.vngiaoducthoidai.vn

Báo Giáo dục và Thời đại Online

Báo Giáo dục và Thời đại Online

Title Length31 chars

Recommended: 50-60 chars (~186px / 580px)

Description Length31 chars

Recommended: 120-160 chars

Issues (0)

    5 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: index

    199 URLs

    199 sub-sitemaps

    robots.txt

    24 rules

    Sitemap reference found

    Local SEO

    Local Search Readiness

    21/100
    Needs Work
    6 11

    Sponsored

    AI & LLM Readiness

    C65/100
    Bot Access
    21/25
    Machine Read.
    16/25
    Schema Data
    10/25
    Citation
    18/25

    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.txtinvalid
    llms-full.txt
    Semantic HTML
    Heading Hierarchy
    Text ratio:5%
    Words:2,308
    Token eff.:Optimal
    Sections/1K:21.2

    Structured Data

    3 JSON-LD
    Person×1.3Organization×1.1WebSiteSearchAction
    sameAs entity links

    Citation Readiness

    Opening Summary31w
    Descriptive Headingsavg 10.8w
    Canonical URL
    Open Graph3/3
    Twitter Card3/3
    Language Tag
    Publish Date
    Author Info
    Lists
    Tables
    TL;DR / Summary
    About Page Link
    Recommendations (6)
    AI readiness recommendation preview...
    Upgrade to view recommendations

    Sponsored

    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.
    B
    72/100
    9
    Passed
    2
    Critical
    2
    Warnings
    Images & Alt Text
    20/20
    Checks if images have descriptive alt text for screen readers and visually impaired users.
    Semantic Structure
    18/20
    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
    0/15
    Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
    2 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.
    76/100
    A+
    5 mg
    CO₂e / view
    39.1 KB
    Page Weight
    95%
    Cleaner Than
    New Visitor
    6 mg
    vs
    Returning (cached)
    3 mg
    Annual (10K/mo)
    576 g
    Emission Segments
    Data Center
    1 mg
    Network
    1 mg
    Device
    3 mg
    Resource Breakdown
    Images
    342 B
    HTML
    38.8 KB
    Green Hosting Not Verified
    Vietnam Internet Network Information Center
    3 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    F

    Security Score

    21%Critical
    Interactive

    HTTPS

    No WAF

    117d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    Sectigo Limited

    Key Algorithm

    RSA (2048 bit)

    Signature

    SHA-256 with RSA

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/2+H3

    Valid From

    26.08.2025

    Valid Until

    26.08.2026

    OCSP Stapling

    Enabled

    Subject Alternative Names (2)

    *.giaoducthoidai.vngiaoducthoidai.vn

    SHA-256 Fingerprint

    C8:0F:D5:E1:6A:E5:5B:7D:91:F9:5F:E2:29:9B:E3:E2:8F:44:B4:E0...

    Top Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    alt-svc
    h3=":443"; ma=86400
    content-encoding
    📦 Gzip(gzip)
    content-type
    text/html;charset=utf-8
    date
    Fri, 01 May 2026 07:52:00 GMT
    etag
    b20ff99bb8f7a26703e687f149f1c5c4
    server-time
    1777620876
    Good Warning Issue

    Email Infrastructure

    Forward Email

    Score

    20

    SPF
    DKIM
    DMARC

    MX Records (2)

    mx1.forwardemail.net
    mx2.forwardemail.net

    Domain Information

    giaoducthoidai.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
    57/100
    Mobile Friendly
    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
    3 recommendations
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    GoogleSans

    WCAG Partial
    63/100
    Readability
    /30
    19/30

    15px · LH 1.47

    Hierarchy
    /20
    13/20

    1.67x ratio · ✓ H1→H6

    WCAG
    /25
    17/25

    1.42:1 min contrast

    Performance
    /25
    14/25

    1 font

    Heading Font

    GoogleSans

    Sans25px

    Body Font

    GoogleSans

    Sans15px

    Contrast Ratio

    1.42:1

    9 issues

    Reading Comfort

    ~41 CPL

    Narrow lines
    25px
    h1
    21px
    h2
    19px
    h3
    15px
    p

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

    ✅ Optimal line spacing: 1.47 ratio (ideal range 1.4–1.6).

    ✅ Easy to read: Flesch score 76/100 — accessible to general audiences.

    ⚠️ Partial contrast: 9 elements below WCAG AA threshold (min 1.4:1).

    ✅ Perfect heading hierarchy: Sequential h1→h2→h3 with single H1 — ideal for SEO & accessibility.

    ⚠️ Text justify detected: Justified text creates uneven word spacing, hurting readability on web.

    Buy on MyFontsFlesch 76

    Color Palette

    12 unique colors
    2.35:1 Fail Light
    #ffffff
    Background· 51.7%
    #9dada0
    Secondary· 3.4%
    #1f1c17
    Secondary· 6.8%
    #c11d36
    Primary· 6.5%
    #edca90
    Accent· 5.9%
    #4e543d
    Secondary· 5.2%
    #cdd9d4
    Secondary· 5.2%
    #9f866f
    Secondary· 5.1%

    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

    Sponsored

    Scripts & Styles

    11 Resources

    10
    Scripts
    1
    Styles
    5
    Async
    2
    Defer

    Top Script Sources

    cdn.browsiprod.com(4)connect.facebook.net(2)googletagmanager.com(1)jsc.mgid.com(1)common.mcms.one(1)

    Website Identity

    Báo Giáo dục và Thời đại Online

    Báo Giáo dục và Thời đại Online

    Organization
    gdtddientu@gmail.com
    +842439369800
    Location detected: 🇻🇳 Vietnamvia phone
    📧 Forward EmailviEst. 1959

    Sponsored

    Last analyzed: 01 May 2026 at 07:52

    Historical Analysis & Change Tracking