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vnav.vn

https://vnav.vn· First analyzed 06 May 2026· Updated 06 May 2026
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vnav.vn
Desktop screenshot of vnav.vn
Mobile screenshot of vnav.vn
Mobile

Sponsored

Hosting Provider

Vietnam Internet Network Information Center

IP Address

210.245.87.117

Site Location

🇻🇳 Vietnamvia tld

Server Location

🇻🇳 Hanoi, Vietnam

ASN

AS18403

Organization

Vietnam Internet Network Information Center

Server

Apache

Nameservers

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

Performance

81

Core Web Vitals

Weight

First Contentful Paint
2.1 s10%
Speed Index
2.7 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
1 MB
63 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Vietnam Internet Network Information Center

Technology Stack

11 Technologies Detected

CSS Frameworks

2
Tailwind CSS
Bootstrap

Icon Libraries

2
Font AwesomeMaterial Icons

Advertising

2
Google AdsGoogle AdSense

Libraries

1
jQueryv1.11.0

Fonts

1
Google Fonts

Analytics

1
Facebook Pixel

Web Servers

1
Apache

Languages

1
PHPv5.4.16

SEO Analysis

B72/100
19
7
0
Meta Tags12/15
Content11/12
Headings6/8
Technical20/25
E-E-A-T0/7
Images4/7
Links5/5
URL5/5
Social3/5
Freshness0/4
Mobile3/4
Indexability3/3
V
vnav.vnvnav.vn

VNAV - Mạng Nghe nhìn Việt nam

Mạng cộng đồng phi chính trị, quy tụ những thành viên có cùng sở thích về âm nhạc, công nghệ âm thanh, hình ảnh, kỹ thuật điện tử

Title Length30 chars

Recommended: 50-60 chars (~189px / 580px)

Description Length129 chars

Recommended: 120-160 chars

Issues (0)

    7 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: standard

    38,063 URLs

    robots.txt

    68 rules

    Local SEO

    Local Search Readiness

    6/100
    Poor
    2 14 2

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

    Sponsored

    AI & LLM Readiness

    D44/100
    Bot Access
    20/25
    Machine Read.
    8/25
    Schema Data
    3/25
    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
    blockquotesdef. listsnav
    Text ratio:8%
    Words:3,243
    Token eff.:Good
    Sections/1K:3.7
    Depth:3/5

    Structured Data

    1 JSON-LD
    WebSiteSearchAction

    Citation Readiness

    Opening Summary24w
    Descriptive Headingsavg 3.9w
    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...
    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
    10
    Passed
    5
    Critical
    3
    Warnings
    Images & Alt Text
    20/20
    Checks if images have descriptive alt text for screen readers and visually impaired users.
    Semantic Structure
    15/20
    Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
    Forms & Inputs
    8/15
    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
    8/15
    Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
    ARIA & Roles
    6/15
    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.
    41/100
    B
    132 mg
    CO₂e / view
    1.0 MB
    Page Weight
    70%
    Cleaner Than
    New Visitor
    150 mg
    vs
    Returning (cached)
    75 mg
    Annual (10K/mo)
    15.8 kg
    Emission Segments
    Data Center
    29 mg
    Network
    32 mg
    Device
    71 mg
    Resource Breakdown
    JavaScript
    645.2 KB
    Images
    176.5 KB
    CSS
    151.5 KB
    Fonts
    6.2 KB
    HTML
    24.5 KB
    Other
    59.1 KB
    Green Hosting Not Verified
    Vietnam Internet Network Information Center
    5 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    F

    Security Score

    0%Critical
    Critical / Transactional

    HTTPS

    No WAF

    98d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    Sectigo Limited

    Key Algorithm

    RSA (2048 bit)

    Signature

    SHA-256 with RSA

    TLS Version

    TLSv1.2

    Valid From

    21.08.2025

    Valid Until

    12.08.2026

    OCSP Stapling

    Enabled

    Subject Alternative Names (2)

    vnav.vnwww.vnav.vn

    SHA-256 Fingerprint

    94:3B:27:1C:44:1B:59:0F:89:D5:48:6D:4B:2A:44:6A:31:FB:DA:8B...

    Top Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    cache-control
    🟡 0s(private, max-age=0)
    connection
    Keep-Alive
    content-encoding
    📦 Gzip(gzip)
    content-length
    24805
    content-type
    text/html; charset=UTF-8
    date
    Wed, 06 May 2026 15:20:09 GMT
    Good Warning Issue

    Email Infrastructure

    Google Workspace

    Score

    45

    SPF
    DKIM
    DMARC

    MX Records (3)

    aspmx.l.google.com
    alt2.aspmx.l.google.com
    alt1.aspmx.l.google.com

    Domain Information

    vnav.vn

    DNSSEC
    Not Enabled

    Privacy & Compliance

    Quantcast Choice

    Cookie Consent Banner
    Quantcast Choice
    Privacy Policy
    Terms of Service

    GDPR Indicators

    Cookie consent banner detected
    CMP: Quantcast Choice
    Privacy policy page linked
    Legitimate interest basis mentioned

    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.
    C
    66/100
    Mobile Friendly11 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.
    Viewport
    width=device-width, initial-scale=1
    3 recommendations
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    Open Sans

    WCAG Partial
    56/100
    Readability
    /30
    17/30

    12px · LH 1.33

    Hierarchy
    /20
    10/20

    1.46x ratio

    WCAG
    /25
    17/25

    2.6:1 min contrast

    Performance
    /25
    12/25

    3 fonts · 5 req

    Heading Font

    Open Sans

    Sans18px

    Body Font

    Open Sans

    Sans12px

    Contrast Ratio

    2.6:1

    1 issue

    Reading Comfort

    ~47 CPL

    Optimal (45–75)
    18px
    h1
    14px
    h2
    16px
    h3
    11px
    h4
    12px
    p

    ❌ Critical: 12px body text is too small. Minimum 14px, recommend 16px+.

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

    ✅ Optimal line length: ~47 chars/line (ideal 45–75 CPL).

    ⚠️ Partial contrast: 1 elements below WCAG AA threshold (min 2.6:1).

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

    ⚠️ Weak hierarchy: Headlines should be ≥2x body size for clear visual structure.

    GGoogle FontsFlesch 69

    Color Palette

    5 unique colors
    6.29:1 AA Dark
    #606060
    Other· 55.79999999999999%
    #ffffff
    Background· 22.3%
    #141524
    Primary· 11%
    #383d47
    Text· 8.7%
    #78869a
    Secondary· 2.1%

    Business & Marketing Stack

    4 Tools Detected

    Enterprise

    Behavior Analytics

    1
    Google AnalyticsFree

    User behavior and product analytics

    Advertising

    2
    Google AdsEnterprise
    Facebook PixelMid-Market

    Ad platforms and retargeting pixels

    Social Media

    1
    Facebook SDKFree

    Social widgets and sharing tools

    3

    Categories

    4

    Total Tools

    1

    Enterprise

    1

    Mid-Market

    Assessment: Sophisticated marketing and sales technology infrastructure

    Ad Networks

    Google AdSense

    Sponsored

    Scripts & Styles

    29 Resources

    20
    Scripts
    9
    Styles
    12
    Async
    0
    Defer

    Top Script Sources

    pagead2.googlesyndication.com(5)cse.google.com(4)js(4)connect.facebook.net(2)google.com(2)

    Website Identity

    vnav.vn

    support@vnav.vn
    Location detected: 🇻🇳 Vietnamvia tld
    📧 Google Workspaceen-US

    Social Profiles

    Facebook

    Sponsored

    Last analyzed: 06 May 2026 at 15:20

    Historical Analysis & Change Tracking