StackOptic
Back to Search
tdwg.org favicon

tdwg.org

https://tdwg.org· First analyzed 15 May 2026· Updated 15 May 2026
Export
tdwg.org
Desktop screenshot of tdwg.org
Mobile screenshot of tdwg.org
Mobile

Sponsored

Hosting Provider

Danmarks Tekniske Universitet

IP Address

130.225.43.43

Site Location

🇩🇰 Denmarkvia ip

Server Location

🇩🇰 Aarhus, Denmark

ASN

AS1835

Organization

Danmarks Tekniske Universitet

Server

Apache

Nameservers

ns-954.awsdns-55.net.ns-112.awsdns-14.com.ns-1521.awsdns-62.org.ns-2002.awsdns-58.co.uk.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
589 ms10%
Speed Index
766 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
3.6 MB
18 requests
0–49
50–89
90–100

Architecture Stack

JAMstack
⚡ SSG
Frontend
Framework
Jekyll
Styling
Bootstrap
Infrastructure
Hosting
Danmarks Tekniske Universitet

Technology Stack

6 Technologies Detected

CSS Frameworks

2
Bootstrap
Tailwind CSS

Libraries

1
jQuery

Icon Libraries

1
Font Awesome

Fonts

1
Google Fonts

Web Servers

1
Apachev2.4.58

SEO Analysis

D58/100
17
9
0
Meta Tags8/15
Content10/12
Headings5/8
Technical13/25
E-E-A-T0/7
Images2/7
Links5/5
URL5/5
Social3/5
Freshness0/4
Mobile4/4
Indexability3/3
T
tdwg.orgtdwg.org

TDWG

We are a non-profit organization and a community dedicated to developing biodiversity information standards.

Title Length4 chars

Recommended: 50-60 chars (~30px / 580px)

Description Length108 chars

Recommended: 120-160 chars

Issues (0)

    9 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: standard

    307 URLs

    robots.txt

    1 rules

    Allows all crawlers

    Local SEO

    Local Search Readiness

    5/100
    Poor
    2 13 2

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

    Sponsored

    AI & LLM Readiness

    D40/100
    Bot Access
    20/25
    Machine Read.
    12/25
    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:13%
    Words:476
    Token eff.:Optimal
    Depth:2/5

    Structured Data

    No Schema

    Citation Readiness

    Opening Summary14w
    Descriptive Headings
    Canonical URL
    Open Graph3/3
    Twitter Card0/3
    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.
    B
    71/100
    9
    Passed
    4
    Critical
    0
    Warnings
    Images & Alt Text
    15/20
    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
    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
    3/15
    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.
    22/100
    F
    457 mg
    CO₂e / view
    3.6 MB
    Page Weight
    15%
    Cleaner Than
    New Visitor
    522 mg
    vs
    Returning (cached)
    261 mg
    Annual (10K/mo)
    54.8 kg
    Emission Segments
    Data Center
    102 mg
    Network
    110 mg
    Device
    245 mg
    Resource Breakdown
    JavaScript
    56.8 KB
    Images
    1.8 MB
    CSS
    1.7 MB
    Fonts
    1.9 KB
    HTML
    4.8 KB
    Green Hosting Not Verified
    Danmarks Tekniske Universitet
    5 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    B

    Security Score

    76%Good
    Static / Informational

    HTTPS

    No WAF

    81d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    Let's Encrypt

    Key Algorithm

    ECDSA (secp256r1) (256 bit)

    Signature

    ECDSA with SHA-384

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/2

    Valid From

    06.05.2026

    Valid Until

    04.08.2026

    Subject Alternative Names (4)

    *.rs.tdwg.org*.tdwg.orgtdwg.linktdwg.org

    SHA-256 Fingerprint

    2F:98:69:04:49:95:38:BF:90:C7:23:42:43:66:DB:64:DA:BC:0B:F2...

    Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    accept-ranges
    bytes
    content-encoding
    📦 Gzip(gzip)
    content-length
    4606
    content-type
    text/html
    date
    Fri, 15 May 2026 15:23:24 GMT
    etag
    "62cd-651c2e4207b8e-gzip"
    Good Warning Issue

    Email Infrastructure

    Custom Mail Server

    Score

    98

    SPF
    DKIM
    DMARC

    DMARC Policy

    Quarantine (Moderate)

    MX Records (2)

    c24d054e.21.ik2.com
    c24d054e.22.ik2.io

    Domain Information

    tdwg.org

    Domain Age
    27y 7m

    Created

    01.10.1998

    Expires

    30.09.2030

    Last Updated

    07.08.2025

    Registrar

    Network Solutions, LLC

    DNSSEC
    Not Enabled

    Privacy & Compliance

    Cookie Consent Banner
    Privacy Policy
    Terms of Service

    GDPR Indicators

    Privacy policy page linked

    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.
    C
    60/100
    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, shrink-to-fit=no
    2 recommendations
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    Roboto + -apple-system

    WCAG Partial
    68/100
    Readability
    /30
    26/30

    16px · LH 1.50

    Hierarchy
    /20
    14/20

    3x ratio

    WCAG
    /25
    10/25

    1:1 min contrast

    Performance
    /25
    18/25

    System fonts

    Heading Font

    Roboto

    Sans48px

    Body Font

    -apple-system

    Sans16px

    Contrast Ratio

    1:1

    3 issues

    Reading Comfort

    ~42 CPL

    Narrow lines
    48px
    h1
    16px
    p

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

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

    ❌ Very complex text: Flesch score 28/100. Consider shorter sentences and simpler words.

    ⚠️ Partial contrast: 3 elements below WCAG AA threshold (min 1.0:1).

    ❌ Broken heading hierarchy: 3 level skip(s). Screen readers rely on sequential headings (h1→h2→h3).

    ✅ Strong hierarchy: Headlines are 3.0x larger than body text.

    GGoogle FontsFlesch 28

    Color Palette

    6 unique colors
    4.45:1 AA Large Light
    #ffffff
    Background· 33.9%
    #697b7a
    Secondary· 4.2%
    #053b59
    Primary· 37.2%

    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

    8 Resources

    4
    Scripts
    4
    Styles
    0
    Async
    0
    Defer

    Top Script Sources

    local(4)

    Website Identity

    tdwg.org

    secretary@tdwg.org
    27 years old
    Location detected: 🇩🇰 Denmarkvia ip
    Network Solutions, LLC

    Sponsored

    Last analyzed: 15 May 2026 at 15:23

    Historical Analysis & Change Tracking