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adelphi.de

https://adelphi.de· First analyzed 10 May 2026· Updated 10 May 2026
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adelphi.de
Desktop screenshot of adelphi.de
Mobile screenshot of adelphi.de
Mobile

Sponsored

Hosting Provider

Hetzner
hetzner.com

IP Address

49.13.114.205

Site Location

🇩🇪 Germanyvia phone

Server Location

🇩🇪 Falkenstein, Germany

ASN

AS24940

Organization

Hetzner

Server

Apache

Nameservers

ns72.domaincontrol.com.ns71.domaincontrol.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
476 ms10%
Speed Index
619 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
3.3 MB
89 requests

Image Optimization

Lazy LoadResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Drupal

Technology Stack

5 Technologies Detected

Libraries

1
jQuery

CSS Frameworks

1
Tailwind CSS

Icon Libraries

1
Font Awesome

Analytics

1
Matomo

Web Servers

1
Apache

SEO Analysis

B78/100
22
4
0
Meta Tags15/15
Content11/12
Headings8/8
Technical20/25
E-E-A-T0/7
Images4/7
Links5/5
URL5/5
Social3/5
Freshness0/4
Mobile4/4
Indexability3/3
A
adelphi.deadelphi.de

adelphi I Research & Consulting for Sustainability & Climate

adelphi is a leading independent think tank and public policy consultancy focusing on climate, environment and development.

Title Length60 chars

Recommended: 50-60 chars (~350px / 580px)

Description Length123 chars

Recommended: 120-160 chars

Issues (0)

    4 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: index

    4 URLs

    4 sub-sitemaps

    robots.txt

    56 rules

    Local SEO

    Local Search Readiness

    22/100
    Needs Work
    8 10 2

    Sponsored

    AI & LLM Readiness

    D48/100
    Bot Access
    20/25
    Machine Read.
    11/25
    Schema Data
    0/25
    Citation
    17/25

    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:3%
    Words:1,290
    Token eff.:Optimal
    Sections/1K:10.9
    Depth:2/5

    Structured Data

    No Schema

    Citation Readiness

    Opening Summary23w
    Descriptive Headingsavg 6.1w
    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
    77/100
    13
    Passed
    3
    Critical
    2
    Warnings
    Images & Alt Text
    13/20
    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
    13/15
    Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
    ARIA & Roles
    9/15
    Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
    3 recommendations
    • •Accessibility recommendation preview...
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    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.
    50/100
    E
    345 mg
    CO₂e / view
    3.3 MB
    Page Weight
    30%
    Cleaner Than
    New Visitor
    394 mg
    vs
    Returning (cached)
    197 mg
    Annual (10K/mo)
    41.4 kg
    Emission Segments
    Data Center
    17 mg
    Network
    101 mg
    Device
    227 mg
    Resource Breakdown
    JavaScript
    127.8 KB
    Images
    2.8 MB
    CSS
    377.0 KB
    HTML
    38.0 KB
    Other
    23.1 KB
    Green Hosting Verified
    Hetzner Online GmbH
    GWF Verified
    3 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    D

    Security Score

    56%Poor
    Interactive

    HTTPS

    No WAF

    23d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    Sectigo Limited

    Key Algorithm

    RSA (2048 bit)

    Signature

    SHA-256 with RSA

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/2

    Valid From

    09.07.2025

    Valid Until

    02.06.2026

    OCSP Stapling

    Enabled

    Subject Alternative Names (2)

    *.adelphi.deadelphi.de

    SHA-256 Fingerprint

    71:85:4C:A4:EA:85:39:3D:64:7F:94:B1:3C:3F:1A:E3:E4:81:83:2F...

    Top Recommendations

    Security recommendation preview

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    Upgrade to view header details

    HTTP Headers

    Developer Console

    cache-control
    🟡 6 Hours(max-age=21600, public)
    content-encoding
    📦 Gzip(gzip)
    content-language
    en
    content-length
    38662
    content-type
    text/html; charset=UTF-8
    date
    Sun, 10 May 2026 16:17:55 GMT
    Good Warning Issue

    Email Infrastructure

    Custom Mail Server

    Score

    90

    SPF
    DKIM
    DMARC

    DMARC Policy

    None (Monitor Only)

    MX Records (2)

    mxlb.ispgateway.de
    mail.adelphi.de

    Domain Information

    adelphi.de

    Last Updated

    24.07.2024

    DNSSEC
    Not Enabled

    Privacy & Compliance

    Cookie Notice (WP)

    Cookie Consent Banner
    Cookie Notice (WP)
    Privacy Policy
    Terms of Service

    GDPR Indicators

    Cookie consent banner detected
    CMP: Cookie Notice (WP)
    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
    64/100
    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=1.0
    2 recommendations
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    Merriweather + Merriweather Sans

    WCAG Partial
    61/100
    Readability
    /30
    16/30

    14px · LH 1.75

    Hierarchy
    /20
    20/20

    5.71x ratio · ✓ H1→H6

    WCAG
    /25
    14/25

    1:1 min contrast

    Performance
    /25
    11/25

    2 fonts · 7 req

    Heading Font

    Merriweather

    Serif80px

    Body Font

    Merriweather Sans

    Sans14px

    Contrast Ratio

    1:1

    3 issues

    Reading Comfort

    ~41 CPL

    Narrow lines
    80px
    h1
    40px
    h2
    46px
    h3
    14px
    p

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

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

    ⚠️ Partial contrast: 3 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 5.7x larger than body text.

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

    Buy on MyFontsFlesch 0

    Color Palette

    11 unique colors
    4.29:1 AA Large Light
    #ffffff
    Background· 33.300000000000004%
    #777a82
    Other· 4.5%
    #c2d1dc
    Primary· 13.5%
    #091113
    Secondary· 9.2%
    #dde3e6
    Border· 6%
    #2e4e60
    Secondary· 5.3%
    #bac3ca
    Secondary· 5.3%
    #a2b5c1
    Secondary· 4.8%

    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

    9 Resources

    7
    Scripts
    2
    Styles
    0
    Async
    2
    Defer

    Top Script Sources

    local(7)

    Website Identity

    adelphi.de

    office@adelphi.de
    +493089000680
    Location detected: 🇩🇪 Germanyvia phone
    en

    Social Profiles

    LinkedInYouTube

    Sponsored

    Last analyzed: 10 May 2026 at 18:12

    Historical Analysis & Change Tracking