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isdt.co

https://isdt.co· First analyzed 03 Jun 2026· Updated 03 Jun 2026
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isdt.co
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Mobile screenshot of isdt.co
Mobile

Sponsored

Hosting Provider

Alibaba Cloud
alibabacloud.com

IP Address

47.82.68.193

Site Location

🇨🇳 Chinavia phone

Server Location

🇭🇰 Hong Kong, Hong Kong

ASN

AS45102

Organization

Alibaba.com LLC

Server

Nginx

Nameservers

dns10.hichina.com.dns9.hichina.com.

Performance

98

Core Web Vitals

Weight

First Contentful Paint
871 ms10%
Speed Index
1.1 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
27.5 MB
127 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Frontend
Styling
Bootstrap
CMS
WordPressv6.8.2
Infrastructure
Hosting
Alibaba Cloud

Technology Stack

10 Technologies Detected

Libraries

2
jQueryv3.3.1
Animate.css

CSS Frameworks

2
Bootstrap
Tailwind CSS

Plugins

2
Qtranslate Xt
Yoast SEO

Frameworks

1
Angular

UI Components

1
Swiper

Icon Libraries

1
Font Awesome

Web Servers

1
Nginx

SEO Analysis

B70/100
19
8
0
Meta Tags8/15
Content11/12
Headings3/8
Technical24/25
E-E-A-T2/7
Images2/7
Links5/5
URL5/5
Social4/5
Freshness0/4
Mobile3/4
Indexability3/3
I
isdt.coisdt.co

ISDT

ISDT-艾斯特专注于无人机航模领域的电源系统的创新和变革，这只是开始，请尽情期待我们更多创新和变革性的新产品：无人机智能停机坪、无人机户外供电系统、多轴VR穿越机、智能ESC、智能舵机。 - ISDT

Title Length4 chars

Recommended: 50-60 chars (~22px / 580px)

Description Length101 chars

Recommended: 120-160 chars

Issues (0)

    8 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: index

    5 URLs

    5 sub-sitemaps

    robots.txt

    5 rules

    Sitemap reference found

    Allows all crawlers

    Local SEO

    Local Search Readiness

    33/100
    Needs Work
    10 8

    Sponsored

    AI & LLM Readiness

    D45/100
    Bot Access
    20/25
    Machine Read.
    8/25
    Schema Data
    7/25
    Citation
    10/25

    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:3%
    Words:1,548
    Token eff.:Optimal
    Depth:1/5

    Structured Data

    4 JSON-LD
    Organization×1.1WebSiteBreadcrumbListSearchAction

    Citation Readiness

    Opening Summary
    Descriptive Headings
    Canonical URL
    Open Graph3/3
    Twitter Card1/3
    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
    73/100
    11
    Passed
    3
    Critical
    2
    Warnings
    Images & Alt Text
    15/20
    Checks if images have descriptive alt text for screen readers and visually impaired users.
    Semantic Structure
    18/20
    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
    14/15
    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
    7/15
    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.
    19/100
    F
    3.48 g
    CO₂e / view
    27.5 MB
    Page Weight
    5%
    Cleaner Than
    New Visitor
    3.98 g
    vs
    Returning (cached)
    1.99 g
    Annual (10K/mo)
    417.9 kg
    Emission Segments
    Data Center
    778 mg
    Network
    836 mg
    Device
    1.87 g
    Resource Breakdown
    JavaScript
    102.3 KB
    Images
    5.3 MB
    CSS
    22.1 MB
    HTML
    30.9 KB
    Green Hosting Not Verified
    Alibaba Cloud
    6 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    F

    Security Score

    36%Critical
    Interactive

    HTTPS

    No WAF

    76d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    DigiCert Inc

    Key Algorithm

    RSA (2048 bit)

    Signature

    SHA-256 with RSA

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/2

    Valid From

    21.05.2026

    Valid Until

    18.08.2026

    OCSP Stapling

    Enabled

    Subject Alternative Names (2)

    isdt.cowww.isdt.co

    SHA-256 Fingerprint

    38:07:1E:1F:A7:C3:2C:1C:CE:F7:6A:3C:BC:05:D9:A3:EA:E7:9D:B0...

    Top Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    access-control-allow-origin
    *
    content-encoding
    📦 Gzip(gzip)
    content-type
    text/html; charset=UTF-8
    date
    Wed, 03 Jun 2026 01:49:40 GMT
    server
    nginx
    strict-transport-security
    max-age=31536000
    Good Warning Issue

    Email Infrastructure

    Custom Mail Server

    Score

    50

    SPF
    DKIM
    DMARC

    MX Records (2)

    mxn.mxhichina.com
    mxw.mxhichina.com

    Domain Information

    isdt.co

    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.
    B
    71/100
    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
    2 recommendations
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    Semibold + Light

    WCAG Partial
    59/100
    Readability
    /30
    22/30

    16px · LH 1.43

    Hierarchy
    /20
    14/20

    2.5x ratio

    WCAG
    /25
    14/25

    1:1 min contrast

    Performance
    /25
    9/25

    3 fonts · 4 req

    Heading Font

    Semibold

    Sans40px

    Body Font

    Light

    Sans16px

    Contrast Ratio

    1:1

    11 issues

    Reading Comfort

    ~43 CPL

    Narrow lines
    40px
    h1
    11px
    h3
    16px
    p

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

    ✅ Optimal line spacing: 1.43 ratio (ideal range 1.4–1.6).

    ❌ Very complex text: Flesch score 0/100. Consider shorter sentences and simpler words.

    ⚠️ Partial contrast: 11 elements below WCAG AA threshold (min 1.0:1).

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

    ✅ Strong hierarchy: Headlines are 2.5x larger than body text.

    Buy on MyFontsFluid Type (rem)Flesch 0

    Color Palette

    5 unique colors
    11.53:1 AAA Light
    #f9f9f9
    Background· 44.49999999999999%
    #363632
    Text· 5.1%

    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

    20 Resources

    10
    Scripts
    10
    Styles
    0
    Async
    0
    Defer

    Top Script Sources

    isdt.co(7)cdnjs.cloudflare.com(3)

    Website Identity

    ISDT-艾斯特

    ISDT-艾斯特

    Organization

    ISDT-艾斯特专注于无人机航模领域的电源系统的创新和变革，这只是开始，请尽情期待我们更多创新和变革性的新产品：无人机智能停机坪、无人机户外供电系统、多轴VR穿越机、智能ESC、智能舵机。 - ISDT

    [email protected]
    +860755-27399915
    www.isdt.co/
    Location detected: 🇨🇳 Chinavia phone
    zh-CN

    Sponsored

    Last analyzed: 03 Jun 2026 at 01:50

    Historical Analysis & Change Tracking

    isdt.co Technology Stack - Built With Angular, jQuery, Swiper, Bootstrap, Tailwind CSS | StackOptic | StackOptic