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duyhai.vn

https://duyhai.vn· First analyzed 30 May 2026· Updated 30 May 2026
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duyhai.vn
Desktop screenshot of duyhai.vn
Mobile screenshot of duyhai.vn
Mobile

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Hosting Provider

Web Panda Company Ltd

IP Address

103.90.235.51

Site Location

🇻🇳 16 Hoa Sữa, Phường 7, Quận Phú Nhuận, TP Hồ Chí Minh, Vietnamvia tld

Server Location

🇻🇳 Quận Mười Một, Vietnam

ASN

AS135917

Organization

Web Panda Company Ltd

Server

Tadu WAF 2.0.52

Nameservers

ns1.dotvndns.vn.nsbak.dotvndns.com.ns2.dotvndns.vn.

Performance

95

Core Web Vitals

Weight

First Contentful Paint
1.2 s10%
Speed Index
1.5 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
3.2 MB
167 requests

Image Optimization

Lazy Load
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Web Panda Company Ltd

Technology Stack

7 Technologies Detected

Analytics

2
Google Analytics
Facebook Pixel

Libraries

1
jQuery

UI Components

1
Slick Carousel

CSS Frameworks

1
Tailwind CSS

Icon Libraries

1
Font Awesome

Languages

1
PHPv5.6.40

SEO Analysis

B70/100
20
6
0
Meta Tags5/15
Content11/12
Headings8/8
Technical19/25
E-E-A-T3/7
Images4/7
Links5/5
URL5/5
Social3/5
Freshness0/4
Mobile4/4
Indexability3/3
D
duyhai.vnduyhai.vn

LAPTOP DUY HẢI

LAPTOP DUY HẢI

Title Length14 chars

Recommended: 50-60 chars (~87px / 580px)

Description Length15 chars

Recommended: 120-160 chars

Issues (0)

    6 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: standard

    25 URLs

    robots.txt

    3 rules

    Local SEO

    Local Search Readiness

    21/100
    Needs Work
    6 12 2

    Sponsored

    AI & LLM Readiness

    D40/100
    Bot Access
    20/25
    Machine Read.
    7/25
    Schema Data
    0/25
    Citation
    13/25

    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
    Text ratio:13%
    Words:6,478
    Token eff.:Acceptable
    Sections/1K:6.3

    Structured Data

    No Schema

    Citation Readiness

    Opening Summary15w
    Descriptive Headingsavg 14.3w
    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...
    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
    70/100
    12
    Passed
    4
    Critical
    3
    Warnings
    Images & Alt Text
    20/20
    Checks if images have descriptive alt text for screen readers and visually impaired users.
    Semantic Structure
    14/20
    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
    5/15
    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.
    2 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.
    17/100
    F
    410 mg
    CO₂e / view
    3.2 MB
    Page Weight
    30%
    Cleaner Than
    New Visitor
    469 mg
    vs
    Returning (cached)
    235 mg
    Annual (10K/mo)
    49.2 kg
    Emission Segments
    Data Center
    92 mg
    Network
    99 mg
    Device
    220 mg
    Resource Breakdown
    JavaScript
    50.6 KB
    Images
    2.7 MB
    CSS
    424.5 KB
    HTML
    13.7 KB
    Other
    15.0 KB
    Green Hosting Not Verified
    Web Panda Company Ltd
    6 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    F

    Security Score

    21%Critical
    Interactive

    HTTPS

    No WAF

    63d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    Let's Encrypt

    Key Algorithm

    RSA (2048 bit)

    Signature

    SHA-256 with RSA

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/2

    Valid From

    03.05.2026

    Valid Until

    01.08.2026

    Subject Alternative Names (2)

    duyhai.vnwww.duyhai.vn

    SHA-256 Fingerprint

    5D:45:CD:03:BD:6C:C1:E7:16:D7:54:BE:06:F3:CB:49:3E:CE:71:86...

    Top Recommendations

    Security recommendation preview

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    Upgrade to view header details

    HTTP Headers

    Developer Console

    cache-control
    🔴 No Cache(no-store, no-cache, must-revalidate, post-check=0, pre-check...)
    content-encoding
    ⚡ Brotli(br)
    content-length
    13730
    content-type
    text/html; charset=UTF-8
    date
    Sat, 30 May 2026 14:25:42 GMT
    expires
    Thu, 19 Nov 1981 08:52:00 GMT
    Good Warning Issue

    Email Infrastructure

    Custom Mail Server

    Score

    70

    SPF
    DKIM
    DMARC

    MX Records (2)

    mail93111.maychuemail.com
    mx93111.maychuemail.net

    Domain Information

    duyhai.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
    52/100
    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.
    Viewport
    width=device-width, initial-scale=1.0
    3 recommendations
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    body

    WCAG AA
    65/100
    Readability
    /30
    17/30

    13px · LH 1.50

    Hierarchy
    /20
    18/20

    2x ratio · ✓ H1→H6

    WCAG
    /25
    19/25

    4.89:1 min contrast

    Performance
    /25
    11/25

    1 font · 5 req

    Heading Font

    body

    Sans26px

    Body Font

    body

    Sans13px

    Contrast Ratio

    4.89:1

    WCAG AA (≥4.5:1)

    Reading Comfort

    ~51 CPL

    Optimal (45–75)
    26px
    h1
    20px
    h2
    15px
    h3
    13px
    h4
    13px
    p

    ❌ Critical: 13px body text is too small. Minimum 14px, recommend 16px+.

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

    ✅ Optimal line length: ~51 chars/line (ideal 45–75 CPL).

    ✅ Easy to read: Flesch score 92/100 — accessible to general audiences.

    ✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 4.9:1).

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

    Buy on MyFontsFlesch 92

    Color Palette

    10 unique colors
    3.77:1 AA Large Light
    #ffffff
    Background· 45.00000000000001%
    #8a8186
    Other· 3.9%
    #191c21
    Primary· 12.4%
    #003b95
    Accent· 9.3%
    #496b88
    Secondary· 6.8%
    #b9c7d2
    Secondary· 6.2%
    #622b30
    Secondary· 3.8%
    #091d42
    Accent· 0.3%

    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

    16 Resources

    7
    Scripts
    9
    Styles
    2
    Async
    0
    Defer

    Top Script Sources

    js(4)connect.facebook.net(2)cdnliver.com(1)

    Website Identity

    duyhai.vn

    02873013486
    Location detected: 🇻🇳 Vietnam, 16 Hoa Sữa, Phường 7, Quận Phú Nhuận, TP Hồ Chí Minhvia tld
    vi

    Social Profiles

    Facebook

    Sponsored

    Last analyzed: 30 May 2026 at 14:25

    Historical Analysis & Change Tracking

    duyhai.vn Technology Stack - Built With jQuery, Slick Carousel, Tailwind CSS, Font Awesome, Google Analytics | StackOptic | StackOptic