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dbu.de

https://dbu.de· First analyzed 28 Apr 2026· Updated 28 Apr 2026
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dbu.de
Desktop screenshot of dbu.de
Mobile screenshot of dbu.de
Mobile

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Hosting Provider

UNI-X

IP Address

195.60.121.223

Site Location

🇩🇪 Germanyvia tld

Server Location

🇩🇪 Ostbevern, Germany

ASN

AS12371

Organization

UNI-X

Server

Nginx

Nameservers

ns2.telekom-domains.de.ns1.telekom-domains.de.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
620 ms10%
Speed Index
806 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
3.3 MB
23 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
WordPressv6.9
cms

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

5 Technologies Detected

UI Components

1
Lightbox

CSS Frameworks

1
Tailwind CSS

Icon Libraries

1
Font Awesome

Web Servers

1
Nginx

Plugins

1
WPML

SEO Analysis

B76/100
21
5
1
Meta Tags12/15
Content9/12
Headings7/8
Technical23/25
E-E-A-T2/7
Images1/7
Links5/5
URL5/5
Social5/5
Freshness0/4
Mobile4/4
Indexability3/3
D
dbu.dedbu.de

DBU - Deutsche Bundesstiftung Umwelt

Die Deutsche Bundesstiftung Umwelt (DBU) fördert dem Stiftungsauftrag und dem Leitbild entsprechend innovative, modellhafte und lösungsorientierte Vorhaben…

Title Length36 chars

Recommended: 50-60 chars (~224px / 580px)

Description Length156 chars

Recommended: 120-160 chars

Issues (1)

  • • Most images missing alt text (1/1) — critical for accessibility and SEO

6 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

1,998 URLs

robots.txt

5 rules

Sitemap reference found

Local SEO

Local Search Readiness

18/100
Poor
5 13

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

D47/100
Bot Access
20/25
Machine Read.
9/25
Schema Data
7/25
Citation
11/25

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
navheader/footer
Text ratio:6%
Words:464
Token eff.:Optimal
Sections/1K:4.3
Depth:2/5

Structured Data

3 JSON-LD
Organization×1.1WebSiteBreadcrumbListSearchAction

Citation Readiness

Opening Summary58w
Descriptive Headingsavg 2w
Canonical URL
Open Graph3/3
Twitter Card3/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (11)
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.
D
49/100
7
Passed
5
Critical
1
Warnings
Images & Alt Text
5/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
14/20
Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
Forms & Inputs
5/15
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
1/15
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.
23/100
F
423 mg
CO₂e / view
3.3 MB
Page Weight
30%
Cleaner Than
New Visitor
483 mg
vs
Returning (cached)
242 mg
Annual (10K/mo)
50.7 kg
Emission Segments
Data Center
94 mg
Network
101 mg
Device
227 mg
Resource Breakdown
JavaScript
1.1 MB
Images
131.3 KB
CSS
2.1 MB
HTML
11.8 KB
Green Hosting Not Verified
UNI-X
5 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
F

Security Score

21%Critical
Interactive

HTTPS

No WAF

121d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

DigiCert Inc

Key Algorithm

RSA (4096 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

29.07.2025

Valid Until

27.08.2026

OCSP Stapling

Enabled

Subject Alternative Names (20)

www.dbu.eudbu.eudeutsche-bundesstiftung-umwelt.dewww.deutsche-bundesstiftung-umwelt.deausstellung-menschenwelt.dewww.ausstellung-menschenwelt.deausstellung-ueberlebensmittel.dewww.ausstellung-ueberlebensmittel.de+12 more

SHA-256 Fingerprint

37:5D:24:B3:3B:C8:18:7C:18:DE:F8:32:B6:42:2D:96:ED:16:B5:C5...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

content-encoding
⚡ Brotli(br)
content-type
text/html; charset=UTF-8
date
Tue, 28 Apr 2026 18:11:04 GMT
link
<https://www.dbu.de/wp-json/>; rel="https://api.w.org/", <ht...
server
nginx
x-powered-by
PleskLin
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

73

SPF
DKIM
DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (4)

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

Domain Information

dbu.de

Last Updated

20.05.2022

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.
B
74/100
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
1 recommendation
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

OpenSans

WCAG Partial
62/100
Readability
/30
17/30

14px · LH 1.71

Hierarchy
/20
15/20

3.43x ratio

WCAG
/25
17/25

3.98:1 min contrast

Performance
/25
13/25

1 font · 5 req

Heading Font

OpenSans

Sans48px

Body Font

OpenSans

Sans14px

Contrast Ratio

3.98:1

2 issues

Reading Comfort

~40 CPL

Narrow lines
48px
h1
26px
h2
20px
h4
14px
p

⚠️ Small text: 14px may strain on mobile. Use ≥16px for WCAG compliance.

❌ Very complex text: Flesch score 10/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 2 elements below WCAG AA threshold (min 4.0:1).

⚠️ Minor heading issue: 1 level skip(s) detected. Maintain sequential order for screen readers.

✅ Strong hierarchy: Headlines are 3.4x larger than body text.

✅ Modern fluid typography: clamp() with rem units ensures zoom accessibility (WCAG 1.4.4).

Buy on MyFontsFluid Type (rem)Flesch 10

Color Palette

8 unique colors
7.14:1 AAA Light
#ffffff
Primary· 53.8%
#4d5b54
Text· 6.2%
#c4c9bd
Secondary· 12.6%
#617a6c
Secondary· 6.4%
#1c3230
Secondary· 5.4%
#a6b19e
Secondary· 4.7%

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

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Scripts & Styles

10 Resources

4
Scripts
6
Styles
0
Async
1
Defer

Top Script Sources

dbu.de(3)api.dbu.de(1)

Website Identity

DBU

Organization

Deutsche Bundesstiftung Umwelt

www.dbu.de/
Location detected: 🇩🇪 Germanyvia tld

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Last analyzed: 28 Apr 2026 at 18:11

Historical Analysis & Change Tracking