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duisburg.de

https://duisburg.de· First analyzed 29 Apr 2026· Updated 29 Apr 2026
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duisburg.de
Desktop screenshot of duisburg.de
Mobile screenshot of duisburg.de
Mobile

Sponsored

Hosting Provider

RGnet OU

IP Address

147.28.52.171

Site Location

🇩🇪 Germanyvia phone

Server Location

🇩🇪 Duisburg, Germany

ASN

AS206141

Organization

RGnet OU

Nameservers

ns01.duit.de.ns02.duit.de.

Performance

97

Core Web Vitals

Weight

First Contentful Paint
966 ms10%
Speed Index
1.3 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
2.4 MB
133 requests

Image Optimization

Lazy LoadWebPResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
RGnet OU

Progressive Web App

Web ManifestApple Touch Icon

Technology Stack

1 Technologies Detected

CSS Frameworks

1
Tailwind CSS

SEO Analysis

B73/100
21
6
0
Meta Tags13/15
Content8/12
Headings8/8
Technical15/21
E-E-A-T0/7
Images6/7
Links5/5
URL5/5
Social4/5
Freshness2/4
Mobile4/4
Indexability3/3
D
duisburg.deduisburg.de

Stadt Duisburg | Startseite | Stadtportal Duisburg

Duisburg verbindet - Ruhrgebiet, Niederrhein, Rheinland. Herzlich willkommen!

Title Length50 chars

Recommended: 50-60 chars (~296px / 580px)

Description Length77 chars

Recommended: 120-160 chars

Issues (0)

    6 issues found

    Upgrade to view details

    Local SEO

    Local Search Readiness

    16/100
    Poor
    5 11 2

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

    Sponsored

    AI & LLM Readiness

    D43/100
    Bot Access
    20/25
    Machine Read.
    9/25
    Schema Data
    1/25
    Citation
    13/25

    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
    Text ratio:1%
    Words:650
    Token eff.:Optimal
    Sections/1K:9.2

    Structured Data

    1 JSON-LD
    BreadcrumbList

    Citation Readiness

    Opening Summary17w
    Descriptive Headingsavg 4.5w
    Canonical URL
    Open Graph3/3
    Twitter Card2/3
    Language Tag
    Publish Date
    Author Info
    Lists
    Tables
    TL;DR / Summary
    About Page Link
    Recommendations (10)
    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
    11
    Passed
    4
    Critical
    0
    Warnings
    Images & Alt Text
    18/20
    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
    9/15
    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.
    31/100
    E
    301 mg
    CO₂e / view
    2.4 MB
    Page Weight
    30%
    Cleaner Than
    New Visitor
    344 mg
    vs
    Returning (cached)
    172 mg
    Annual (10K/mo)
    36.1 kg
    Emission Segments
    Data Center
    67 mg
    Network
    72 mg
    Device
    162 mg
    Resource Breakdown
    JavaScript
    316.9 KB
    Images
    1.9 MB
    CSS
    74.1 KB
    HTML
    59.9 KB
    Other
    1.2 KB
    Green Hosting Not Verified
    RGnet OU
    6 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    D

    Security Score

    51%Poor
    Interactive

    HTTPS

    No WAF

    189d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    Sectigo Limited

    Key Algorithm

    RSA (4096 bit)

    Signature

    SHA-256 with RSA

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/1.1

    Valid From

    20.04.2026

    Valid Until

    04.11.2026

    OCSP Stapling

    Enabled

    Subject Alternative Names (4)

    duisburg.de*.duisburg.destadt-duisburg.dewww.stadt-duisburg.de

    SHA-256 Fingerprint

    AF:0F:73:27:17:08:12:1B:0D:75:43:34:31:ED:83:1D:D1:F7:40:14...

    Top Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    cache-control
    🟡 0s(max-age=0, must-revalidate, private)
    connection
    Upgrade, Keep-Alive
    content-encoding
    📦 Gzip(gzip)
    content-security-policy
    frame-ancestors 'self' *.duisburg.de
    content-type
    text/html; charset=UTF-8
    date
    Wed, 29 Apr 2026 18:30:05 GMT
    Good Warning Issue

    Email Infrastructure

    Custom Mail Server

    Score

    43

    SPF
    DKIM
    DMARC

    DMARC Policy

    Quarantine (Moderate)

    MX Records (1)

    mx231.duit.de

    Domain Information

    duisburg.de

    Last Updated

    01.03.2024

    DNSSEC
    Not Enabled

    Privacy & Compliance

    Cookie Consent Banner
    Privacy Policy
    Terms of Service

    GDPR Indicators

    Cookie consent banner detected
    Privacy policy page linked
    Data Protection Officer mentioned

    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 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, minimum-scale=1, user-scalable=yes
    1 recommendation
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    Roboto Variable

    WCAG AA
    73/100
    Readability
    /30
    20/30

    21px · LH 1.33

    Hierarchy
    /20
    10/20

    1.33x ratio

    WCAG
    /25
    23/25

    4.64:1 min contrast

    Performance
    /25
    20/25

    1 font · 1 req

    Heading Font

    Roboto Variable

    Sans28px

    Body Font

    Roboto Variable

    Sans21px

    Contrast Ratio

    4.64:1

    WCAG AA (≥4.5:1)

    Reading Comfort

    Single Font Family

    left aligned
    28px
    h1
    44px
    h2
    24px
    h3
    21px
    p
    Minor Second
    Scale

    ✅ Excellent readability: 21px body text is ideal for all devices.

    ⚠️ Tight line spacing (1.33). Increase to 1.4–1.6 for better readability.

    ❌ Very complex text: Flesch score 11/100. Consider shorter sentences and simpler words.

    ✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 4.6:1).

    ❌ 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 MyFontsFluid Type (rem)Flesch 11

    Color Palette

    10 unique colors
    5.18:1 AA Light
    #ffffff
    Background· 16.099999999999998%
    #676d7b
    Secondary· 6.7%
    #001f65
    Primary· 21.1%
    #033079
    Accent· 11.3%
    #030d42
    Accent· 11.3%
    #7988a6
    Secondary· 8%
    #3359a1
    Accent· 6.7%
    #436ab4
    Secondary· 6.5%

    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

    10 Resources

    7
    Scripts
    3
    Styles
    6
    Async
    0
    Defer

    Top Script Sources

    cdn.eye-able.com(4)translate-cdn.eye-able.com(2)local(1)

    Website Identity

    duisburg.de

    +4920394000
    Location detected: 🇩🇪 Germanyvia phone
    de-DE

    Sponsored

    Last analyzed: 29 Apr 2026 at 18:30

    Historical Analysis & Change Tracking