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otto-brenner-stiftung.de

https://otto-brenner-stiftung.de· First analyzed 10 May 2026· Updated 10 May 2026
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otto-brenner-stiftung.de
Desktop screenshot of otto-brenner-stiftung.de
Mobile screenshot of otto-brenner-stiftung.de
Mobile

Sponsored

Hosting Provider

BNK-BNK

IP Address

130.255.79.212

Site Location

🇩🇪 Germanyvia tld

Server Location

🇩🇪 Bochum, Germany

ASN

AS29141

Organization

BNK-BNK

Server

Apache

Nameservers

ns1.virtualhosts.de.ns3.virtualhosts.eu.ns2.virtualhosts.de.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
518 ms10%
Speed Index
673 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
2.1 MB
52 requests

Image Optimization

Lazy LoadResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
TYPO3

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

6 Technologies Detected

Analytics

2
Google Analytics
Google Analytics 4

CSS Frameworks

1
Tailwind CSS

Tag Managers

1
Google Tag Manager

Web Servers

1
Apache

Libraries

1
Slick Carousel

SEO Analysis

A81/100
24
4
0
Meta Tags15/15
Content11/12
Headings8/8
Technical21/25
E-E-A-T0/7
Images4/7
Links5/5
URL5/5
Social5/5
Freshness0/4
Mobile4/4
Indexability3/3
O
otto-brenner-stiftung.deotto-brenner-stiftung.de

Otto Brenner Stiftung – Wissen für Demokratie & Arbeit

Die OBS schafft Wissen für Demokratie und gute Arbeit und verbindet Forschung, Gewerkschaften und Zivilgesellschaft, um gerechte Entwicklungen zu fördern.

Title Length54 chars

Recommended: 50-60 chars (~334px / 580px)

Description Length154 chars

Recommended: 120-160 chars

Issues (0)

    4 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: index

    1 URLs

    1 sub-sitemaps

    robots.txt

    693 rules

    Sitemap reference found

    Local SEO

    Local Search Readiness

    3/100
    Poor
    1 14 2

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

    Sponsored

    AI & LLM Readiness

    D41/100
    Bot Access
    17/25
    Machine Read.
    11/25
    Schema Data
    0/25
    Citation
    13/25

    AI Bot Access

    9/14 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:9%
    Words:668
    Token eff.:Optimal
    Sections/1K:12
    Depth:2/5

    Structured Data

    1 JSON-LD

    Citation Readiness

    Opening Summary20w
    Descriptive Headingsavg 2.1w
    Canonical URL
    Open Graph3/3
    Twitter Card3/3
    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.
    C
    67/100
    10
    Passed
    2
    Critical
    2
    Warnings
    Images & Alt Text
    20/20
    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
    2/15
    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
    4/15
    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.
    43/100
    D
    261 mg
    CO₂e / view
    2.1 MB
    Page Weight
    50%
    Cleaner Than
    New Visitor
    299 mg
    vs
    Returning (cached)
    149 mg
    Annual (10K/mo)
    31.4 kg
    Emission Segments
    Data Center
    58 mg
    Network
    63 mg
    Device
    140 mg
    Resource Breakdown
    JavaScript
    89.4 KB
    Images
    1.7 MB
    CSS
    35.8 KB
    Fonts
    272.9 KB
    HTML
    11.0 KB
    Other
    2.1 KB
    Green Hosting Not Verified
    BNK-BNK
    5 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    C

    Security Score

    61%Fair
    Interactive

    HTTPS

    No WAF

    29d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    Let's Encrypt

    Key Algorithm

    RSA (4096 bit)

    Signature

    SHA-256 with RSA

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/2

    Valid From

    11.03.2026

    Valid Until

    09.06.2026

    Subject Alternative Names (2)

    otto-brenner-stiftung.dewww.otto-brenner-stiftung.de

    SHA-256 Fingerprint

    F0:38:0A:96:03:29:1C:9C:58:63:B3:40:F0:B3:98:B7:32:E2:CE:3B...

    Top Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    cache-control
    🔴 No Cache(private, no-store, max-age=0)
    content-encoding
    📦 Gzip(gzip)
    content-language
    de-DE
    content-length
    11001
    content-security-policy-report-only
    default-src 'self'; script-src 'self' 'nonce-Cy8TwQ7IUuO6neJ...
    content-type
    text/html; charset=utf-8
    Good Warning Issue

    Email Infrastructure

    Microsoft 365

    Score

    90

    SPF
    DKIM
    DMARC

    DMARC Policy

    None (Monitor Only)

    MX Records (1)

    ottobrennerstiftung-de01b1b.mail.protection.outlook.com

    Domain Information

    otto-brenner-stiftung.de

    Last Updated

    01.09.2020

    DNSSEC
    Not Enabled

    Privacy & Compliance

    CookieFirst

    Cookie Consent Banner
    CookieFirst
    Privacy Policy
    Terms of Service

    GDPR Indicators

    Cookie consent banner detected
    CMP: CookieFirst
    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
    67/100
    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

    ABC Solar

    WCAG Partial
    76/100
    Readability
    /30
    21/30

    16px · LH 1.50

    Hierarchy
    /20
    20/20

    6x ratio · ✓ H1→H6

    WCAG
    /25
    15/25

    3.09:1 min contrast

    Performance
    /25
    20/25

    1 font · 3 req

    Heading Font

    ABC Solar

    Sans96px

    Body Font

    ABC Solar

    Sans16px

    Contrast Ratio

    3.09:1

    Below AA

    Reading Comfort

    ~34 CPL

    Narrow lines
    96px
    h1
    40px
    h2
    40px
    h3
    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 24/100. Consider shorter sentences and simpler words.

    ⚠️ Partial contrast: 0 elements below WCAG AA threshold (min 3.1:1).

    ✅ Perfect heading hierarchy: Sequential h1→h2→h3 with single H1 — ideal for SEO & accessibility.

    ✅ Strong hierarchy: Headlines are 6.0x larger than body text.

    Buy on MyFontsFlesch 24

    Color Palette

    9 unique colors
    6.02:1 AA Dark
    #636456
    Secondary· 31.9%
    #ffffff
    Primary· 28.2%

    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

    22 Resources

    12
    Scripts
    10
    Styles
    3
    Async
    2
    Defer

    Top Script Sources

    local(8)consent.cookiefirst.com(2)googletagmanager.com(2)

    Website Identity

    otto-brenner-stiftung.de

    Location detected: 🇩🇪 Germanyvia tld
    📧 Microsoft 365de-de

    Sponsored

    Last analyzed: 10 May 2026 at 19:59

    Historical Analysis & Change Tracking