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duh.de

https://duh.de· First analyzed 26 Apr 2026· Updated 26 Apr 2026
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duh.de
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Mobile screenshot of duh.de
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Hosting Provider

Keyweb AG

IP Address

195.34.83.46

Site Location

🇩🇪 Germanyvia tld

Server Location

🇩🇪 Erfurt, Germany

ASN

AS8648

Organization

Keyweb AG

Server

Nginx

CDN

Cloudflare

WAF

Cloudflare

Nameservers

rick.ns.cloudflare.com.grace.ns.cloudflare.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
566 ms10%
Speed Index
736 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
41.4 MB
133 requests

Image Optimization

Responsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Frontend
Styling
Bootstrap
CMS
TYPO3
Infrastructure
Hosting
Keyweb AG
CDN
Cloudflare

Technology Stack

14 Technologies Detected

UI Components

3
SwiperOwl CarouselLightbox

CSS Frameworks

2
Bootstrap
Tailwind CSS

Analytics

2
Google Analytics
Facebook Pixel

Libraries

1
jQuery

Other

1
Modernizr

Icon Libraries

1
Font Awesome

Tag Managers

1
Google Tag Manager

Advertising

1
TikTok Pixel

Web Servers

1
Nginx

Languages

1
PHPv7.2.34

SEO Analysis

B74/100
21
5
1
Meta Tags15/15
Content12/12
Headings8/8
Technical19/25
E-E-A-T0/7
Images2/7
Links4/5
URL5/5
Social3/5
Freshness0/4
Mobile3/4
Indexability3/3
D
duh.deduh.de

Wir setzen Umweltschutz durch – Deutsche Umwelthilfe e.V.

Die Deutsche Umwelthilfe verbindet Naturschutz mit Verbraucherschutz und setzt sich für den Erhalt unserer natürlichen Lebensgrundlagen ein.

Title Length57 chars

Recommended: 50-60 chars (~352px / 580px)

Description Length140 chars

Recommended: 120-160 chars

Issues (1)

  • • Most images missing alt text (42/53) — critical for accessibility and SEO

6 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

744 URLs

robots.txt

105 rules

Sitemap reference found

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

D44/100
Bot Access
20/25
Machine Read.
11/25
Schema Data
0/25
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
nav
Text ratio:10%
Words:1,972
Token eff.:Optimal
Sections/1K:12.7
Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary64w
Descriptive Headingsavg 4.2w
Canonical URL
Open Graph3/3
Twitter Card0/3
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
71/100
10
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
15/20
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...
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.
34/100
F
4.28 g
CO₂e / view
41.4 MB
Page Weight
5%
Cleaner Than
New Visitor
4.89 g
vs
Returning (cached)
2.45 g
Annual (10K/mo)
513.7 kg
Emission Segments
Data Center
210 mg
Network
1.26 g
Device
2.81 g
Resource Breakdown
JavaScript
171.9 KB
Images
40.6 MB
CSS
658.8 KB
HTML
22.5 KB
Other
314 B
Green Hosting Verified
dogado
GWF Verified
6 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
F

Security Score

21%Critical
Interactive

HTTPS

No WAF

93d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

DigiCert Inc

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

23.07.2025

Valid Until

28.07.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.duh.deduh.de

SHA-256 Fingerprint

50:75:2D:4E:61:2D:92:08:4C:46:5B:FB:E0:38:D6:00:AE:C6:0D:4C...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

content-encoding
⚡ Brotli(br)
content-language
de
content-type
text/html;charset=utf-8
date
Sun, 26 Apr 2026 11:08:45 GMT
server
nginx
vary
Accept-Encoding
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

68

SPF
DKIM
DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (4)

mx03.hornetsecurity.com
mx01.hornetsecurity.com
mx04.hornetsecurity.com
mx02.hornetsecurity.com

Domain Information

duh.de

Last Updated

04.02.2026

DNSSEC
Not Enabled

Privacy & Compliance

Usercentrics

Cookie Consent Banner
Usercentrics
Privacy Policy
Terms of Service

GDPR Indicators

Cookie consent banner detected
CMP: Usercentrics
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.
B
73/100
Mobile Friendly6 breakpoints
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

Roboto Slab + Open Sans

WCAG Partial
58/100
Readability
/30
24/30

16px · LH 1.75

Hierarchy
/20
16/20

2x ratio · ✓ H1→H6

WCAG
/25
11/25

1:1 min contrast

Performance
/25
7/25

3 fonts · 6 req

Heading Font

Roboto Slab

Sans32px

Body Font

Open Sans

Sans16px

Contrast Ratio

1:1

25 issues

Reading Comfort

~39 CPL

Narrow lines
32px
h1
32px
h2
32px
h3
24px
h4
16px
p

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

⚠️ Partial contrast: 25 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 2.0x larger than body text.

❌ Pure vw font sizes: Viewport units alone break browser zoom (WCAG 1.4.4 fail). Use clamp(rem, vw, rem).

⚠️ Missing font-display: swap — users may see invisible text while fonts load (FOIT).

Buy on MyFonts

Color Palette

12 unique colors
19.69:1 AAA Light
#ffffff
Background· 26.7%
#0b0b0a
Text· 6.5%
#ab9486
Primary· 6.1%
#c0cfa9
Secondary· 4.6%
#764849
Secondary· 4.6%
#f0cd94
Accent· 2.5%

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

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Scripts & Styles

26 Resources

20
Scripts
6
Styles
2
Async
0
Defer

Top Script Sources

duh.de(18)app.usercentrics.eu(2)

Website Identity

duh.de

Location detected: 🇩🇪 Germanyvia tld
de

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Last analyzed: 26 Apr 2026 at 11:08

Historical Analysis & Change Tracking