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ef.com.cn

https://ef.com.cn· First analyzed 24 May 2026· Updated 24 May 2026
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ef.com.cn
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Mobile screenshot of ef.com.cn
Mobile

Sponsored

Hosting Provider

CNC Group CHINA169 Shandong Province Network

IP Address

119.188.204.76

Site Location

🇷🇴 Romaniavia phone

Server Location

🇨🇳 Jinan, China

ASN

AS4837

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

ns226.dns.cf-ns.net.ns26.dns.cf-ns.com.

Performance

85

Core Web Vitals

Weight

First Contentful Paint
1.8 s10%
Speed Index
2.3 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
2.1 MB
63 requests

Image Optimization

Lazy LoadWebPResponsive
0–49
50–89
90–100

Architecture Stack

JAMstack
⚡ SSG
Decoupled
Frontend
Framework
Gatsbyv3.15.0
Styling
Tailwind CSS
API
Data Source
Headless CMS
Storyblok
Infrastructure
Hosting
CNC Group CHINA169 Shandong Province Network
CDN
Cloudflare

Detected API Sources

https://a.storyblok.com/f/8977...

Technology Stack

8 Technologies Detected

Analytics

2
Google Analytics
Google Analytics 4

Meta Frameworks

1
Gatsby

CSS Frameworks

1
Tailwind CSS

Tag Managers

1
Google Tag Manager

Advertising

1
Snapchat Pixel

Reviews

1
Trustpilot

CDN

1
Cloudflare

SEO Analysis

C69/100
21
8
0
Meta Tags8/15
Content8/12
Headings8/8
Technical22/25
E-E-A-T2/7
Images4/7
Links5/5
URL5/5
Social3/5
Freshness0/4
Mobile1/4
Indexability3/3
E
ef.com.cnef.com.cn

EF - 教育, 让世界无界 | EF 中国大陆地区

英孚教育提供儿童和青少年课程、成人英语和商务英语培训、海外游学和海外留学课程。EF采取独特的英语口语和听力培训方式，是您学习英语的首选英语培训机构。赶紧登陆EF英孚教育官网获取免费试听课程，开始英语学习之旅。

Title Length26 chars

Recommended: 50-60 chars (~156px / 580px)

Description Length104 chars

Recommended: 120-160 chars

Issues (0)

    8 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: index

    6 URLs

    6 sub-sitemaps

    robots.txt

    16 rules

    Sitemap reference found

    Local SEO

    Local Search Readiness

    17/100
    Poor
    5 11 1

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

    Sponsored

    AI & LLM Readiness

    D47/100
    Bot Access
    20/25
    Machine Read.
    13/25
    Schema Data
    3/25
    Citation
    11/25

    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:2%
    Words:660
    Token eff.:Optimal
    Sections/1K:33.3
    Depth:1/5

    Structured Data

    Microdata
    Organization×1.1microdataWebSitemicrodata

    Citation Readiness

    Opening Summary
    Descriptive Headingsavg 1.6w
    Canonical URL
    Open Graph3/3
    Twitter Card2/3
    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.
    A
    83/100
    13
    Passed
    2
    Critical
    0
    Warnings
    Images & Alt Text
    15/20
    Checks if images have descriptive alt text for screen readers and visually impaired users.
    Semantic Structure
    20/20
    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
    9/15
    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.
    42/100
    D
    263 mg
    CO₂e / view
    2.1 MB
    Page Weight
    50%
    Cleaner Than
    New Visitor
    300 mg
    vs
    Returning (cached)
    150 mg
    Annual (10K/mo)
    31.5 kg
    Emission Segments
    Data Center
    59 mg
    Network
    63 mg
    Device
    141 mg
    Resource Breakdown
    JavaScript
    1.8 MB
    Images
    865 B
    CSS
    231.7 KB
    HTML
    25.0 KB
    Other
    21.2 KB
    Green Hosting Not Verified
    CNC Group CHINA169 Shandong Province Network
    5 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    D

    Security Score

    56%Poor
    Interactive

    HTTPS

    WAF

    68d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    Google Trust Services

    Key Algorithm

    ECDSA (secp256r1) (256 bit)

    Signature

    ECDSA with SHA-256

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/2

    Valid From

    03.05.2026

    Valid Until

    01.08.2026

    OCSP Stapling

    Enabled

    Subject Alternative Names (2)

    ef.com.cn*.ef.com.cn

    SHA-256 Fingerprint

    A9:3F:31:68:2E:73:9D:1B:FD:F1:10:5A:0E:2E:66:15:0E:92:8B:A4...

    Top Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    cache-control
    🟡 1200s(max-age=1200)
    cf-cache-status
    DYNAMIC
    cf-placement
    remote-CDG
    cf-ray
    a00bb7b49e9c8ab7-SJW
    content-encoding
    📦 Gzip(gzip)
    content-type
    text/html
    Good Warning Issue

    Email Infrastructure

    Custom Mail Server

    Score

    25

    SPF
    DKIM
    DMARC

    DMARC Policy

    Reject (Strictest)

    Domain Information

    ef.com.cn

    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.
    A
    80/100
    Mobile Friendly4 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, shrink-to-fit=no
    1 recommendation
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    Helvetica

    WCAG Partial
    80/100
    Readability
    /30
    24/30

    16px · LH 1.50

    Hierarchy
    /20
    20/20

    3x ratio · ✓ H1→H6

    WCAG
    /25
    18/25

    1:1 min contrast

    Performance
    /25
    18/25

    2 fonts · 5 req

    Heading Font

    Helvetica

    Sans48px

    Body Font

    Helvetica

    Sans16px

    Contrast Ratio

    1:1

    19 issues

    Reading Comfort

    ~39 CPL

    Narrow lines
    48px
    h1
    32px
    h2
    16px
    p

    ✅ Excellent readability: 16px body text is ideal for all devices.

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

    ⚠️ Hard to read: Flesch score 48/100. Simplify sentences for wider reach.

    ⚠️ Partial contrast: 19 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 3.0x larger than body text.

    Buy on MyFontsFluid Type (rem)Flesch 48

    Color Palette

    12 unique colors
    9.96:1 AAA Light
    #ffffff
    Background· 61.5%
    #414343
    Other· 4.3%
    #0b0d0f
    Primary· 4.8%
    #e8e4e3
    Secondary· 4.2%
    #302822
    Secondary· 4.1%
    #ab9d96
    Secondary· 3.3%
    #a8c9e0
    Secondary· 3.1%
    #6e5344
    Secondary· 2.9%

    Business & Marketing Stack

    5 Tools Detected

    Enterprise

    Behavior Analytics

    2
    Google Tag ManagerFree
    Google AnalyticsFree

    User behavior and product analytics

    Advertising

    2
    Reddit PixelMid-Market
    Snapchat PixelMid-Market

    Ad platforms and retargeting pixels

    Reviews & Social Proof

    1
    TrustpilotMid-Market

    Customer reviews and testimonials

    3

    Categories

    5

    Total Tools

    0

    Enterprise

    3

    Mid-Market

    Assessment: Sophisticated marketing and sales technology infrastructure

    Sponsored

    Scripts & Styles

    21 Resources

    20
    Scripts
    1
    Styles
    17
    Async
    0
    Defer

    Top Script Sources

    local(13)tr.snapchat.com(1)sc-static.net(1)redditstatic.com(1)googletagmanager.com(1)

    Website Identity

    ef.com.cn

    +4008801965
    Location detected: 🇷🇴 Romaniavia phone
    zh-Hans

    Sponsored

    Last analyzed: 24 May 2026 at 10:47

    Historical Analysis & Change Tracking