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ech.edu.vn

https://ech.edu.vn· First analyzed 28 May 2026· Updated 28 May 2026
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ech.edu.vn
Desktop screenshot of ech.edu.vn
Mobile screenshot of ech.edu.vn
Mobile

Sponsored

Hosting Provider

NHANHOA

IP Address

103.28.36.169

Site Location

🇻🇳 Hồ Chí Minh, Vietnamvia schema_nap

Server Location

🇻🇳 Đống Đa, Vietnam

ASN

AS131353

Organization

NHANHOA

Server

Microsoft IIS

Nameservers

ns1.matbao.vn.ns2.matbao.vn.

Performance

99

Core Web Vitals

Weight

First Contentful Paint
789 ms10%
Speed Index
1.0 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
541 KB
24 requests

Image Optimization

Lazy LoadCloudinary
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Frontend
Styling
Bootstrap
Infrastructure
Hosting
NHANHOA
CDN
Cloudinary

Technology Stack

7 Technologies Detected

CSS Frameworks

2
Bootstrap
Tailwind CSS

Analytics

2
Google Analytics
Google Analytics 4

Libraries

1
jQueryv3.7.1

Web Servers

1
Microsoft IISv10.0

Security

1
reCAPTCHA

SEO Analysis

A83/100
25
4
0
Meta Tags13/15
Content12/12
Headings8/8
Technical21/25
E-E-A-T3/7
Images5/7
Links5/5
URL5/5
Social5/5
Freshness0/4
Mobile3/4
Indexability3/3
E
ech.edu.vnech.edu.vn

Trang Chủ - ECH - English Community House

ECH - English Community House | Trung tâm dạy tiếng Anh chất lượng cao tại TP.HCM. Khóa học IELTS, TOEIC, tiếng Anh giao tiếp với giáo viên bản ngữ. Miễn phí...

Description truncated.
Title Length41 chars

Recommended: 50-60 chars (~253px / 580px)

Description Length182 chars

Recommended: 120-160 chars

Issues (0)

    4 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: standard

    15 URLs

    robots.txt

    8 rules

    Sitemap reference found

    Local SEO

    Local Search Readiness

    28/100
    Needs Work
    8 12 1

    Sponsored

    AI & LLM Readiness

    D49/100
    Bot Access
    20/25
    Machine Read.
    11/25
    Schema Data
    1/25
    Citation
    17/25

    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:6%
    Words:754
    Token eff.:Optimal
    Sections/1K:11.9
    Depth:1/5

    Structured Data

    1 JSON-LD
    sameAs entity links

    Citation Readiness

    Opening Summary35w
    Descriptive Headingsavg 4.1w
    Canonical URL
    Open Graph3/3
    Twitter Card3/3
    Language Tag
    Publish Date
    Author Info
    Lists
    Tables
    TL;DR / Summary
    About Page Link
    Recommendations (7)
    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.
    A
    80/100
    12
    Passed
    2
    Critical
    1
    Warnings
    Images & Alt Text
    20/20
    Checks if images have descriptive alt text for screen readers and visually impaired users.
    Semantic Structure
    17/20
    Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
    Forms & Inputs
    15/15
    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
    4/15
    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.
    53/100
    A
    67 mg
    CO₂e / view
    541.1 KB
    Page Weight
    80%
    Cleaner Than
    New Visitor
    77 mg
    vs
    Returning (cached)
    38 mg
    Annual (10K/mo)
    8.0 kg
    Emission Segments
    Data Center
    15 mg
    Network
    16 mg
    Device
    36 mg
    Resource Breakdown
    JavaScript
    24.2 KB
    Images
    446.0 KB
    CSS
    54.7 KB
    HTML
    15.9 KB
    Other
    320 B
    Green Hosting Not Verified
    NHANHOA
    5 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    B

    Security Score

    75%Good
    Critical / Transactional

    HTTPS

    No WAF

    84d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    Let's Encrypt

    Key Algorithm

    RSA (2048 bit)

    Signature

    SHA-256 with RSA

    TLS Version

    TLSv1.2

    HTTP Protocol

    HTTP/2

    Valid From

    23.05.2026

    Valid Until

    21.08.2026

    Subject Alternative Names (5)

    ech.edu.vnenglishcommunityhouse.comwebmail.ech.edu.vnwww.ech.edu.vnwww.englishcommunityhouse.com

    SHA-256 Fingerprint

    A8:5F:EC:30:28:CC:FD:F7:6E:5A:E3:C0:6F:C6:E0:5F:2C:EF:4A:87...

    Top Recommendations

    Security recommendation preview

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    Upgrade to view header details

    HTTP Headers

    Developer Console

    cache-control
    🔴 No Cache(no-cache, no-store)
    content-encoding
    ⚡ Brotli(br)
    content-security-policy
    default-src 'self'; script-src 'self' 'unsafe-inline' 'unsaf...
    content-type
    text/html; charset=utf-8
    date
    Thu, 28 May 2026 06:03:26 GMT
    permissions-policy
    geolocation=*, microphone=*, camera=*
    Good Warning Issue

    Email Infrastructure

    Custom Mail Server

    Score

    20

    SPF
    DKIM
    DMARC

    MX Records (1)

    mail.ech.edu.vn

    Domain Information

    ech.edu.vn

    DNSSEC
    Not Enabled

    Privacy & Compliance

    Cookie Consent Banner
    Privacy Policy
    Terms of Service

    GDPR Indicators

    Privacy policy page linked

    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.
    B
    78/100
    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

    Typography & Readability

    -apple-system

    WCAG Partial
    82/100
    Readability
    /30
    25/30

    20px · LH 1.80

    Hierarchy
    /20
    19/20

    3.2x ratio · ✓ H1→H6

    WCAG
    /25
    16/25

    1:1 min contrast

    Performance
    /25
    22/25

    System fonts

    Heading Font

    -apple-system

    Sans64px

    Body Font

    -apple-system

    Sans20px

    Contrast Ratio

    1:1

    18 issues

    Reading Comfort

    ~40 CPL

    Narrow lines
    64px
    h1
    40px
    h2
    40px
    h3
    32px
    h4
    20px
    p

    ✅ Excellent readability: 20px body text is ideal for all devices.

    ✅ Easy to read: Flesch score 87/100 — accessible to general audiences.

    ⚠️ Partial contrast: 18 elements below WCAG AA threshold (min 1.0:1).

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

    ✅ Strong hierarchy: Headlines are 3.2x larger than body text.

    ✅ System fonts: Zero font loading delay — best possible LCP impact.

    Flesch 87

    Color Palette

    7 unique colors
    Light
    #ffffff
    Text· 10%
    #182948
    Secondary· 60.2%
    #626e7f
    Secondary· 6.5%
    #2b4563
    Primary· 6.3%
    #dedecf
    Secondary· 2.4%

    Business & Marketing Stack

    1 Tools Detected

    Growing

    Behavior Analytics

    1
    Google AnalyticsFree

    User behavior and product analytics

    1

    Categories

    1

    Total Tools

    0

    Enterprise

    0

    Mid-Market

    Assessment: Growing marketing technology adoption

    Sponsored

    Scripts & Styles

    9 Resources

    5
    Scripts
    4
    Styles
    1
    Async
    0
    Defer

    Top Script Sources

    googletagmanager.com(1)code.iconify.design(1)code.jquery.com(1)cdn.jsdelivr.net(1)local(1)

    Website Identity

    ECH - English Community House

    ECH - English Community House

    EducationalOrganization

    Cộng đồng học tiếng Anh chất lượng cao

    [email protected]
    +84 917 08 79 48

    11A Hồng Hà, Phường 2, Quận Tân Bình, TP.HCM, Hồ Chí Minh

    Hồ Chí Minh

    VN

    Location detected: 🇻🇳 Vietnam, Hồ Chí Minhvia schema_nap
    vi

    Sponsored

    Last analyzed: 28 May 2026 at 06:03

    Historical Analysis & Change Tracking

    ech.edu.vn Technology Stack - Built With jQuery, Bootstrap, Tailwind CSS, Google Analytics, Google Analytics 4 | StackOptic | StackOptic