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rudern.de

https://rudern.de· First analyzed 28 May 2026· Updated 28 May 2026
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rudern.de
Desktop screenshot of rudern.de
Mobile screenshot of rudern.de
Mobile

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Hosting Provider

Mass Hosting

IP Address

62.138.179.53

Site Location

🇩🇪 Germanyvia tld

Server Location

🇫🇷 Strasbourg, France

ASN

AS8972

Organization

Mass Hosting

Server

Nginx

Nameservers

ns60.domaincontrol.com.ns59.domaincontrol.com.

Performance

99

Core Web Vitals

Weight

First Contentful Paint
787 ms10%
Speed Index
1.0 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
1.1 MB
48 requests

Image Optimization

Lazy LoadWebPResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Drupal

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

4 Technologies Detected

Analytics

2
Google Analytics
Google Analytics 4

CSS Frameworks

1
Tailwind CSS

Web Servers

1
Nginx

SEO Analysis

C62/100
19
7
2
Meta Tags4/15
Content10/12
Headings7/8
Technical18/25
E-E-A-T0/7
Images3/7
Links5/5
URL5/5
Social1/5
Freshness2/4
Mobile4/4
Indexability3/3
R
rudern.derudern.de

rudern.de

No description available for this page.

Title Length9 chars

Recommended: 50-60 chars (~53px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (2)

  • • Missing meta description — important for click-through rates in SERPs
  • • Most images missing alt text (149/160) — critical for accessibility and SEO

9 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

12 URLs

12 sub-sitemaps

robots.txt

53 rules

Local SEO

Local Search Readiness

8/100
Poor
2 13 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

F30/100
Bot Access
20/25
Machine Read.
2/25
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
data-nosnippet

Machine Readability

llms.txt
llms-full.txt
Semantic HTML
Heading Hierarchy
nav
Text ratio:4%
Words:3,130
Token eff.:Poor Structure
Sections/1K:0.6
Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary15w
Descriptive Headingsavg 1w
Canonical URL
Open Graph0/3
Twitter Card0/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (12)
AI readiness recommendation preview...
Upgrade to view recommendations

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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
74/100
12
Passed
4
Critical
2
Warnings
Images & Alt Text
15/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
13/20
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
7/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
4 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.
60/100
B
138 mg
CO₂e / view
1.1 MB
Page Weight
70%
Cleaner Than
New Visitor
158 mg
vs
Returning (cached)
79 mg
Annual (10K/mo)
16.6 kg
Emission Segments
Data Center
31 mg
Network
33 mg
Device
74 mg
Resource Breakdown
JavaScript
142.6 KB
Images
446.7 KB
CSS
30.8 KB
Fonts
431.0 KB
HTML
66.7 KB
Green Hosting Not Verified
Mass Hosting
4 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
C

Security Score

61%Fair
Interactive

HTTPS

No WAF

62d

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/1.1

Valid From

01.05.2026

Valid Until

30.07.2026

Subject Alternative Names (20)

aktivenpass.rudern.dearchiv.rudern.deassets.rudern.deattention.rudern.debilder.rudern.dedownloads.rudern.defotos.rudern.degewaesser.rudern.de+12 more

SHA-256 Fingerprint

E3:A3:0B:96:C6:B6:7E:7F:88:D6:9F:72:36:FC:A8:0A:54:BD:D6:F7...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

cache-control
🟡 300s(max-age=300, public)
connection
keep-alive
content-encoding
📦 Gzip(gzip)
content-type
text/html; charset=UTF-8
content-language
de
date
Thu, 28 May 2026 12:26:35 GMT
Good Warning Issue

Email Infrastructure

Microsoft 365

Score

95

SPF
DKIM
DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

rudern-de.mail.protection.outlook.com

Domain Information

rudern.de

Last Updated

31.08.2021

DNSSEC
Not Enabled

Privacy & Compliance

Quantcast Choice

Cookie Consent Banner
Quantcast Choice
Privacy Policy
Terms of Service

GDPR Indicators

Cookie consent banner detected
CMP: Quantcast Choice
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.
C
69/100
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
1 recommendation
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

TheSans

WCAG Partial
56/100
Readability
/30
18/30

16px · LH 1.20

Hierarchy
/20
8/20
WCAG
/25
17/25

1.97:1 min contrast

Performance
/25
13/25

1 font · 6 req

Heading Font

TheSans

Sans

Body Font

TheSans

Sans16px

Contrast Ratio

1.97:1

24 issues

Reading Comfort

~36 CPL

Narrow lines
44px
h2
28px
h3
16px
p

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

⚠️ Tight line spacing (1.20). Increase to 1.4–1.6 for better readability.

❌ Very complex text: Flesch score 18/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 24 elements below WCAG AA threshold (min 2.0:1).

❌ Missing H1: Every page should have exactly one H1 element for SEO and accessibility.

✅ Lean font stack: 1 font families keeps load times fast.

Buy on MyFontsFlesch 18

Color Palette

6 unique colors
Light
#ffffff
Background· 19.6%
#96cadf
Accent· 53.400000000000006%
#0060b0
Primary· 0%
#b4c3d0
Secondary· 8.8%
#91b3cc
Secondary· 5.6%
#7a9fba
Secondary· 5.6%

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

Ad Networks

Google Ad Manager

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Scripts & Styles

10 Resources

8
Scripts
2
Styles
5
Async
0
Defer

Top Script Sources

local(2)d.delivery.consentmanager.net(2)cdn.consentmanager.net(2)storage.googleapis.com(1)googletagmanager.com(1)

Website Identity

rudern.de

Location detected: 🇩🇪 Germanyvia tld
📧 Microsoft 365de

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Last analyzed: 28 May 2026 at 13:46

Historical Analysis & Change Tracking

rudern.de Technology Stack - Built With Tailwind CSS, Google Analytics, Google Analytics 4, Nginx | StackOptic | StackOptic