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zhangqiaokeyan.com

https://zhangqiaokeyan.com· First analyzed 12 May 2026· Updated 12 May 2026
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zhangqiaokeyan.com
Desktop screenshot of zhangqiaokeyan.com
Mobile screenshot of zhangqiaokeyan.com
Mobile

Sponsored

Hosting Provider

Alibaba Cloud
alibabacloud.com

IP Address

123.56.79.215

Site Location

🇨🇳 Chinavia ip

Server Location

🇨🇳 Beijing, China

ASN

AS37963

Organization

Aliyun Computing Co., LTD

Nameservers

dns1.hichina.com.dns2.hichina.com.

Performance

80

Core Web Vitals

Weight

First Contentful Paint
2.2 s10%
Speed Index
2.9 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
387 KB
79 requests

Image Optimization

Lazy Load
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Frontend
Styling
Bootstrap
Infrastructure
Hosting
Alibaba Cloud

Technology Stack

3 Technologies Detected

Libraries

1
jQueryv1.12.4

UI Components

1
Swiper

CSS Frameworks

1
Bootstrap

SEO Analysis

C63/100
17
9
0
Meta Tags7/15
Content11/12
Headings8/8
Technical19/25
E-E-A-T0/7
Images4/7
Links5/5
URL5/5
Social0/5
Freshness0/4
Mobile1/4
Indexability3/3
Z
zhangqiaokeyan.comzhangqiaokeyan.com

掌桥科研【一站式科研服务平台】

掌桥科研一站式科研服务平台，拥有中外文献3亿+篇。掌桥科研致力于为广大科研工作者提供方便、快捷的一站式科技文献查询与下载，以及文档翻译、文档转换、收录引证和科技查新等科研服务。

Title Length15 chars

Recommended: 50-60 chars (~93px / 580px)

Description Length88 chars

Recommended: 120-160 chars

Issues (0)

    9 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: standard

    20,000 URLs

    robots.txt

    30 rules

    Sitemap reference found

    Local SEO

    Local Search Readiness

    4/100
    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

    F38/100
    Bot Access
    20/25
    Machine Read.
    11/25
    Schema Data
    0/25
    Citation
    7/25

    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
    def. lists
    Text ratio:6%
    Words:2,173
    Token eff.:Optimal
    Sections/1K:6
    Depth:1/5

    Structured Data

    No Schema

    Citation Readiness

    Opening Summary
    Descriptive Headingsavg 1w
    Canonical URL
    Open Graph0/3
    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.
    D
    59/100
    8
    Passed
    4
    Critical
    2
    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
    5/15
    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
    0/15
    Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
    3 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.
    51/100
    A
    48 mg
    CO₂e / view
    386.8 KB
    Page Weight
    90%
    Cleaner Than
    New Visitor
    55 mg
    vs
    Returning (cached)
    27 mg
    Annual (10K/mo)
    5.7 kg
    Emission Segments
    Data Center
    11 mg
    Network
    12 mg
    Device
    26 mg
    Resource Breakdown
    JavaScript
    75.1 KB
    Images
    95.5 KB
    CSS
    171.5 KB
    HTML
    42.5 KB
    Other
    2.2 KB
    Green Hosting Not Verified
    Alibaba Cloud
    4 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    F

    Security Score

    21%Critical
    Interactive

    HTTPS

    No WAF

    277d

    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

    15.01.2026

    Valid Until

    13.02.2027

    OCSP Stapling

    Enabled

    Subject Alternative Names (2)

    *.zhangqiaokeyan.comzhangqiaokeyan.com

    SHA-256 Fingerprint

    82:E8:CF:C9:C5:6F:2F:3D:FE:5A:3D:B2:F9:88:6A:32:19:01:51:F2...

    Top Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    access-control-allow-credentials
    true
    access-control-allow-headers
    Origin, x-requested-with, Content-Type, Accept,X-Cookie,Set-...
    access-control-allow-methods
    GET,POST,PUT,OPTIONS,DELETE
    access-control-allow-origin
    *
    access-control-expose-headers
    Content-Disposition,Authorization
    connection
    keep-alive
    Good Warning Issue

    Email Infrastructure

    Custom Mail Server

    Score

    50

    SPF
    DKIM
    DMARC

    MX Records (2)

    mxw.mxhichina.com
    mxn.mxhichina.com

    Domain Information

    zhangqiaokeyan.com

    Domain Age
    6y 10m

    Created

    11.07.2019

    Expires

    11.07.2030

    Last Updated

    22.06.2024

    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
    41/100
    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=width, initial-scale=1.0,user-scalable=no
    4 recommendations
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    Source Han Sans CN + Microsoft YaHei

    WCAG Partial
    58/100
    Readability
    /30
    12/30

    14px · LH 4.64

    Hierarchy
    /20
    16/20

    1.93x ratio · ✓ H1→H6

    WCAG
    /25
    16/25

    1:1 min contrast

    Performance
    /25
    14/25

    2 fonts

    Heading Font

    Source Han Sans CN

    Sans27px

    Body Font

    Microsoft YaHei

    Sans14px

    Contrast Ratio

    1:1

    9 issues

    Reading Comfort

    Dual Sans-Serif

    left aligned
    27px
    h1
    14px
    h2
    14px
    p

    ⚠️ Small text: 14px may strain on mobile. Use ≥16px for WCAG compliance.

    ⚠️ Wide line spacing (4.64). 1.4–1.6 is optimal for body text.

    ❌ Very complex text: Flesch score 19/100. Consider shorter sentences and simpler words.

    ⚠️ 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.

    ✅ Lean font stack: 2 font families keeps load times fast.

    Buy on MyFontsFlesch 19

    Color Palette

    7 unique colors
    Light
    #ffffff
    Background· 56.300000000000004%
    #63a8e5
    Accent· 15.3%
    #2932e1
    Primary· 0%
    #4594e5
    Accent· 14.5%
    #adbdce
    Secondary· 5.6%
    #4a74e4
    Accent· 4.2%
    #e7ecf2
    Secondary· 4%
    #f7f7e4
    Accent· 0.1%

    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

    24 Resources

    20
    Scripts
    4
    Styles
    0
    Async
    0
    Defer

    Top Script Sources

    cdn.zhangqiaokeyan.com(16)hm.baidu.com(1)g.alicdn.com(1)o.alicdn.com(1)zhangqiaokeyan.com(1)

    Website Identity

    zhangqiaokeyan.com

    6 years old
    Location detected: 🇨🇳 Chinavia ip
    Alibaba Cloud Computing (Beijing) Co., Ltd.zh

    Sponsored

    Last analyzed: 12 May 2026 at 00:14

    Historical Analysis & Change Tracking