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jerei.com

https://jerei.com· First analyzed 21 May 2026· Updated 21 May 2026
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jerei.com
Desktop screenshot of jerei.com
Mobile screenshot of jerei.com
Mobile

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Hosting Provider

Huawei Cloud Service

IP Address

49.4.23.173

Site Location

🇨🇳 Chinavia ip

Server Location

🇨🇳 Beijing, China

ASN

AS55990

Organization

Huawei Cloud Service

Server

Apache

Nameservers

dns18.hichina.com.dns17.hichina.com.

Performance

76

Core Web Vitals

Weight

First Contentful Paint
2.8 s10%
Speed Index
3.7 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
1.6 MB
59 requests

Image Optimization

Responsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Huawei Cloud Service

Technology Stack

3 Technologies Detected

UI Components

1
Swiper

CSS Frameworks

1
Tailwind CSS

Web Servers

1
Apache

SEO Analysis

C65/100
19
8
0
Meta Tags12/15
Content10/12
Headings6/8
Technical13/25
E-E-A-T3/7
Images4/7
Links5/5
URL5/5
Social0/5
Freshness0/4
Mobile4/4
Indexability3/3
J
jerei.comjerei.com

数字化展馆,数字孪生工厂,智慧矿山,环境数字治理,AI油田,网站建设-山东捷瑞数字科技股份有限公司

捷瑞数字致力于为客户提供专业的数字化转型咨询并交付具有竞争力的数字化产品和整体解决方案。公司专注于数字孪生工厂、智慧能源管理、AI油田、数字化展馆等业务领域。

Title Length49 chars

Recommended: 50-60 chars (~290px / 580px)

Description Length79 chars

Recommended: 120-160 chars

Issues (0)

    8 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: standard

    4,985 URLs

    robots.txt

    3 rules

    Sitemap reference found

    Local SEO

    Local Search Readiness

    10/100
    Poor
    3 12 2

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

    Sponsored

    AI & LLM Readiness

    F35/100
    Bot Access
    20/25
    Machine Read.
    7/25
    Schema Data
    0/25
    Citation
    8/25

    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
    navheader/footer
    Text ratio:6%
    Words:217
    Token eff.:Too Short
    Depth:2/5

    Structured Data

    No Schema

    Citation Readiness

    Opening Summary29w
    Descriptive Headings
    Canonical URL
    Open Graph0/3
    Twitter Card0/3
    Language Tag
    Publish Date
    Author Info
    Lists
    Tables
    TL;DR / Summary
    About Page Link
    Recommendations (8)
    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.
    C
    67/100
    8
    Passed
    4
    Critical
    1
    Warnings
    Images & Alt Text
    15/20
    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
    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
    1/15
    Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
    4 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.
    38/100
    C
    206 mg
    CO₂e / view
    1.6 MB
    Page Weight
    60%
    Cleaner Than
    New Visitor
    235 mg
    vs
    Returning (cached)
    118 mg
    Annual (10K/mo)
    24.7 kg
    Emission Segments
    Data Center
    46 mg
    Network
    49 mg
    Device
    111 mg
    Resource Breakdown
    JavaScript
    197.0 KB
    Images
    1.3 MB
    CSS
    97.9 KB
    HTML
    7.8 KB
    Green Hosting Not Verified
    Huawei Cloud Service
    6 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    D

    Security Score

    46%Poor
    Interactive

    HTTPS

    No WAF

    4d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    DigiCert Inc

    Key Algorithm

    RSA (2048 bit)

    Signature

    SHA-256 with RSA

    TLS Version

    TLSv1.2

    HTTP Protocol

    HTTP/1.1

    Valid From

    26.05.2025

    Valid Until

    25.05.2026

    OCSP Stapling

    Enabled

    Subject Alternative Names (2)

    *.jerei.comjerei.com

    SHA-256 Fingerprint

    FC:43:8A:A6:50:E7:87:2A:6D:DC:69:BA:D4:04:DB:2D:5A:94:9C:39...

    Top Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    accept-ranges
    bytes
    access-control-allow-origin
    admin.jerei.com
    connection
    Keep-Alive
    content-encoding
    📦 Gzip(gzip)
    content-length
    7738
    content-type
    text/html; charset=utf-8
    Good Warning Issue

    Email Infrastructure

    Custom Mail Server

    Score

    50

    SPF
    DKIM
    DMARC

    MX Records (3)

    mx3.qiye.aliyun.com
    mx2.qiye.aliyun.com
    mx1.qiye.aliyun.com

    Domain Information

    jerei.com

    Domain Age
    12y 5m

    Created

    02.12.2013

    Expires

    02.12.2026

    Last Updated

    24.08.2023

    Registrar

    Alibaba Cloud Computing (Beijing) Co., Ltd.

    DNSSEC
    Not Enabled

    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
    47/100
    Not 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, minimum-scale=1.0, user-scalable=no
    4 recommendations
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    Microsoft Yahei

    WCAG Partial
    58/100
    Readability
    /30
    16/30

    15px · LH 1.80

    Hierarchy
    /20
    15/20

    2.93x ratio · ✓ H1→H6

    WCAG
    /25
    12/25

    1:1 min contrast

    Performance
    /25
    15/25

    1 font · 2 req

    Heading Font

    Microsoft Yahei

    Sans44px

    Body Font

    Microsoft Yahei

    Sans15px

    Contrast Ratio

    1:1

    9 issues

    Reading Comfort

    ~35 CPL

    Narrow lines
    44px
    h1
    15px
    p

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

    ⚠️ Partial contrast: 9 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 2.9x larger than body text.

    ❌ Pure vw font sizes: Viewport units alone break browser zoom (WCAG 1.4.4 fail). Use clamp(rem, vw, rem).

    ✅ Lean font stack: 1 font families keeps load times fast.

    Buy on MyFonts

    Color Palette

    15 unique colors
    6.4:1 AA Light
    #c8c2c2
    Other· 14.6%
    #3c3b34
    Other· 7.1%
    #6e6355
    Primary· 6.1%
    #e2d5c5
    Secondary· 5.6%
    #eeebe5
    Secondary· 5.5%
    #1b1d17
    Text· 5.4%
    #ba9868
    Secondary· 4.7%
    #cdb89e
    Secondary· 4.7%

    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

    13 Resources

    7
    Scripts
    6
    Styles
    0
    Async
    0
    Defer

    Top Script Sources

    local(4)goutong.baidu.com(1)hm.baidu.com(1)aff-im.cdn.bcebos.com(1)

    Website Identity

    jerei.com

    0535-6722555
    12 years old
    Location detected: 🇨🇳 Chinavia ip
    Alibaba Cloud Computing (Beijing) Co., Ltd.

    Sponsored

    Last analyzed: 21 May 2026 at 08:16

    Historical Analysis & Change Tracking