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weizenbaum-institut.de

https://weizenbaum-institut.de· First analyzed 15 May 2026· Updated 15 May 2026
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weizenbaum-institut.de
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Mobile

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Hosting Provider

Hetzner
hetzner.com

IP Address

88.198.132.234

Site Location

🇩🇪 Germanyvia tld

Server Location

🇩🇪 Falkenstein, Germany

ASN

AS24940

Server

Apache

Nameservers

dns-2.dfn.de.dns-1.dfn.de.dns-3.dfn.de.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
572 ms10%
Speed Index
744 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
2.5 MB
47 requests

Image Optimization

Responsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
TYPO3

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

3 Technologies Detected

CSS Frameworks

1
Tailwind CSS

Analytics

1
Matomo

Web Servers

1
Apachev2.4.67

SEO Analysis

C60/100
16
7
2
Meta Tags7/15
Content11/12
Headings6/8
Technical14/21
E-E-A-T0/7
Images1/7
Links5/5
URL5/5
Social4/5
Freshness0/4
Mobile4/4
Indexability3/3
W
weizenbaum-institut.deweizenbaum-institut.de

Weizenbaum-Institut \ Forschung für die vernetzte Gesellschaft.: We...

Das Weizenbaum-Institut steht für exzellente, unabhängige, interdisziplinäre und grundlagenorientierte Digitalisierungsforschung. Wir stellen Politik, Wirtsc...

Title truncated. Description truncated.
Title Length84 chars

Recommended: 50-60 chars (~510px / 580px)

Description Length434 chars

Recommended: 120-160 chars

Issues (2)

  • • Title is too long (84 chars, ~510px). Will be truncated in search results.
  • • Most images missing alt text (18/28) — critical for accessibility and SEO

9 issues found

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Local SEO

Local Search Readiness

15/100
Poor
4 12 2

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

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AI & LLM Readiness

D46/100
Bot Access
20/25
Machine Read.
12/25
Schema Data
0/25
Citation
14/25

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:8%
Words:1,205
Token eff.:Optimal

Structured Data

No Schema

Citation Readiness

Opening Summary26w
Descriptive Headingsavg 6.9w
Canonical URL
Open Graph2/3
Twitter Card3/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (10)
AI readiness recommendation preview...
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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
73/100
10
Passed
4
Critical
2
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
12/20
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
9/15
Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
ARIA & Roles
7/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
4 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.
55/100
D
255 mg
CO₂e / view
2.5 MB
Page Weight
30%
Cleaner Than
New Visitor
291 mg
vs
Returning (cached)
146 mg
Annual (10K/mo)
30.6 kg
Emission Segments
Data Center
13 mg
Network
75 mg
Device
167 mg
Resource Breakdown
JavaScript
282.4 KB
Images
1.8 MB
CSS
342.4 KB
Fonts
40.4 KB
HTML
13.2 KB
Green Hosting Verified
Hetzner Online GmbH
GWF Verified
4 recommendations
  • •Carbon footprint recommendation preview...
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D

Security Score

46%Poor
Interactive

HTTPS

No WAF

86d

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/1.1

Valid From

11.05.2026

Valid Until

09.08.2026

Subject Alternative Names (6)

feature.weizenbaum-institut.denotfall.weizenbaum-institut.destaging.weizenbaum-institut.deweizenbaum-institut.dewhite.weizenbaum-institut.dewww.weizenbaum-institut.de

SHA-256 Fingerprint

14:77:09:1C:28:AA:FF:11:A8:87:70:F1:91:1D:B7:46:07:7C:D4:52...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control
🟡 12 Hours(max-age=45177)
connection
Upgrade, Keep-Alive
content-encoding
📦 Gzip(gzip)
content-language
de
content-length
13265
content-type
text/html; charset=utf-8
Good Warning Issue

Email Infrastructure

Microsoft 365

Score

98

SPF
DKIM
DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

weizenbauminstitut-de02e.mail.protection.outlook.com

Domain Information

weizenbaum-institut.de

Last Updated

04.02.2021

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
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

RobotoCondensed + Bitter

WCAG AA
75/100
Readability
/30
20/30

18px · LH 1.33

Hierarchy
/20
15/20

2.5x ratio

WCAG
/25
22/25

6.55:1 min contrast

Performance
/25
18/25

2 fonts · 5 req

Heading Font

RobotoCondensed

Sans45px

Body Font

Bitter

Serif18px

Contrast Ratio

6.55:1

WCAG AA (≥4.5:1)

Reading Comfort

~32 CPL

Narrow lines
45px
h1
36px
h2
30px
h3
18px
p

✅ Excellent readability: 18px 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 0/100. Consider shorter sentences and simpler words.

✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 6.5:1).

⚠️ Minor heading issue: 0 level skip(s) detected. Maintain sequential order for screen readers.

✅ Strong hierarchy: Headlines are 2.5x larger than body text.

Buy on MyFontsFlesch 0

Color Palette

5 unique colors
Light
#ffffff
Primary· 48.2%
#ece5db
Secondary· 24.000000000000004%
#e5f2fa
Primary· 16.3%
#5d847e
Secondary· 6.9%
#bec89d
Secondary· 4.5%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

2
Matomo (Piwik)Mid-Market
Google AnalyticsFree

User behavior and product analytics

1

Categories

2

Total Tools

0

Enterprise

1

Mid-Market

Assessment: Growing marketing technology adoption

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Scripts & Styles

8 Resources

5
Scripts
3
Styles
1
Async
0
Defer

Top Script Sources

local(4)analytics.weizenbaum-institut.de(1)

Website Identity

weizenbaum-institut.de

Location detected: 🇩🇪 Germanyvia tld
📧 Microsoft 365

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Last analyzed: 15 May 2026 at 00:56

Historical Analysis & Change Tracking