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sdi-tool.org

https://sdi-tool.org· First analyzed 16 May 2026· Updated 16 May 2026
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sdi-tool.org
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Mobile

Sponsored

Hosting Provider

SysAdminMan Ltd

IP Address

87.117.235.122

Site Location

🇬🇧 United Kingdomvia ip

Server Location

🇬🇧 Maidenhead, United Kingdom

ASN

AS20860

Organization

SysAdminMan Ltd

Server

Nginx

Nameservers

ns-canada.topdns.com.ns-usa.topdns.com.ns-uk.topdns.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
448 ms10%
Speed Index
582 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
428 KB
36 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
SysAdminMan Ltd

Technology Stack

4 Technologies Detected

Libraries

1
jQueryv1.6.2

Analytics

1
Google Analytics

Tag Managers

1
Google Tag Manager

Web Servers

1
Nginxv1.10.3

SEO Analysis

C63/100
18
8
0
Meta Tags13/15
Content10/12
Headings8/8
Technical13/25
E-E-A-T0/7
Images2/7
Links5/5
URL5/5
Social0/5
Freshness0/4
Mobile4/4
Indexability3/3
S
sdi-tool.orgsdi-tool.org

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Title Length61 chars

Recommended: 50-60 chars (~360px / 580px)

Description Length116 chars

Recommended: 120-160 chars

Issues (0)

    8 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: standard

    18 URLs

    robots.txt

    Local SEO

    Local Search Readiness

    0/100
    Poor
    15 2

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

    Sponsored

    AI & LLM Readiness

    D42/100
    Bot Access
    20/25
    Machine Read.
    16/25
    Schema Data
    0/25
    Citation
    6/25

    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.txtinvalid
    llms-full.txt
    Semantic HTML
    Heading Hierarchy
    Text ratio:18%
    Words:407
    Token eff.:Optimal
    Sections/1K:24.6

    Structured Data

    Microdata

    Citation Readiness

    Opening Summary34w
    Descriptive Headingsavg 1.9w
    Canonical URL
    Open Graph0/3
    Twitter Card0/3
    Language Tag
    Publish Date
    Author Info
    Lists
    Tables
    TL;DR / Summary
    About Page Link
    Recommendations (12)
    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
    71/100
    9
    Passed
    4
    Critical
    0
    Warnings
    Images & Alt Text
    20/20
    Checks if images have descriptive alt text for screen readers and visually impaired users.
    Semantic Structure
    11/20
    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
    1/15
    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.
    61/100
    A
    43 mg
    CO₂e / view
    428.3 KB
    Page Weight
    90%
    Cleaner Than
    New Visitor
    49 mg
    vs
    Returning (cached)
    25 mg
    Annual (10K/mo)
    5.2 kg
    Emission Segments
    Data Center
    2 mg
    Network
    13 mg
    Device
    28 mg
    Resource Breakdown
    JavaScript
    117.3 KB
    Images
    169.8 KB
    CSS
    137.2 KB
    HTML
    4.1 KB
    Green Hosting Verified
    iomart Group PLC
    GWF Verified
    4 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    F

    Security Score

    21%Critical
    Interactive

    HTTPS

    No WAF

    75d

    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/1.1

    Valid From

    01.05.2026

    Valid Until

    30.07.2026

    Subject Alternative Names (1)

    sdi-tool.org

    SHA-256 Fingerprint

    DC:56:88:84:66:D6:41:16:D0:7F:78:F4:08:C6:AB:7D:AE:C3:9C:80...

    Top Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    cache-control
    🔴 No Cache(no-store, no-cache, must-revalidate)
    connection
    keep-alive
    content-encoding
    📦 Gzip(gzip)
    content-length
    3908
    content-type
    text/html; charset=utf-8
    date
    Sat, 16 May 2026 00:59:04 GMT
    Good Warning Issue

    Email Infrastructure

    Custom Mail Server

    Score

    45

    SPF
    DKIM
    DMARC

    MX Records (3)

    smtp02.topdns.com
    smtp04.topdns.com
    smtp03.topdns.com

    Domain Information

    sdi-tool.org

    Domain Age
    10y 4m

    Created

    23.12.2015

    Expires

    23.12.2028

    Last Updated

    20.11.2025

    Registrar

    Internet Domain Service BS Corp

    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.
    D
    57/100
    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
    2 recommendations
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    RobotoMedium + RobotoLight

    WCAG Partial
    44/100
    Readability
    /30
    20/30

    14px · LH 2.00

    Hierarchy
    /20
    4/20

    1.43x ratio

    WCAG
    /25
    13/25

    1:1 min contrast

    Performance
    /25
    7/25

    3 fonts · 4 req

    Heading Font

    RobotoMedium

    Sans20px

    Body Font

    RobotoLight

    Sans14px

    Contrast Ratio

    1:1

    39 issues

    Reading Comfort

    ~59 CPL

    Optimal (45–75)
    20px
    h1
    20px
    h2
    24px
    h3
    14px
    p
    Major Second
    Scale

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

    ⚠️ Wide line spacing (2.00). 1.4–1.6 is optimal for body text.

    ✅ Optimal line length: ~59 chars/line (ideal 45–75 CPL).

    ⚠️ Partial contrast: 39 elements below WCAG AA threshold (min 1.0:1).

    ❌ Missing H1: Every page should have exactly one H1 element for SEO and accessibility.

    ⚠️ Weak hierarchy: Headlines should be ≥2x body size for clear visual structure.

    Buy on MyFontsFlesch 60

    Color Palette

    13 unique colors
    9.04:1 AAA Light
    #ffffff
    Background· 19.8%
    #4a484c
    Other· 5.6%
    #12a2dd
    Primary· 9.9%
    #0276ab
    Accent· 8.6%
    #012d43
    Accent· 8.1%
    #014467
    Accent· 7.5%
    #1a82b1
    Accent· 6.5%
    #0292cf
    Accent· 6.4%

    Business & Marketing Stack

    2 Tools Detected

    Growing

    Behavior Analytics

    2
    Google Tag ManagerFree
    Google AnalyticsFree

    User behavior and product analytics

    1

    Categories

    2

    Total Tools

    0

    Enterprise

    0

    Mid-Market

    Assessment: Growing marketing technology adoption

    Sponsored

    Scripts & Styles

    6 Resources

    4
    Scripts
    2
    Styles
    3
    Async
    0
    Defer

    Top Script Sources

    google-analytics.com(1)mc.yandex.ru(1)googletagmanager.com(1)ajax.googleapis.com(1)

    Website Identity

    sdi-tool.org

    10 years old
    Location detected: 🇬🇧 United Kingdomvia ip
    Internet Domain Service BS Corp

    Social Profiles

    X (Twitter)Telegram

    Sponsored

    Last analyzed: 16 May 2026 at 00:59

    Historical Analysis & Change Tracking