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dza.de

https://dza.de· First analyzed 29 May 2026· Updated 29 May 2026
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dza.de
Desktop screenshot of dza.de
Mobile screenshot of dza.de
Mobile

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Hosting Provider

Hetzner
hetzner.com

IP Address

136.243.90.188

Site Location

🇩🇪 Germanyvia phone

Server Location

🇩🇪 Falkenstein, Germany

ASN

AS24940

Organization

Hetzner

Server

Nginx

Nameservers

nsc5.schlundtech.de.nsa5.schlundtech.de.nsb5.schlundtech.de.nsd5.schlundtech.de.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
587 ms10%
Speed Index
763 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
5.8 MB
44 requests

Image Optimization

Responsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
TYPO3

Technology Stack

4 Technologies Detected

Libraries

1
jQuery

CSS Frameworks

1
Tailwind CSS

Analytics

1
Matomo

Web Servers

1
Nginx

SEO Analysis

C66/100
17
8
2
Meta Tags12/15
Content12/12
Headings3/8
Technical18/21
E-E-A-T0/7
Images1/7
Links5/5
URL5/5
Social1/5
Freshness2/4
Mobile4/4
Indexability3/3
D
dza.dedza.de

Startseite: Deutsches Zentrum für Altersfragen

Das Deutsche Zentrum für Altersfragen (DZA) ist ein Bundesforschungsinstitut, das in seinen Studien gesellschaftliche Teilhabe im Lebenslauf thematisiert und...

Description truncated.
Title Length46 chars

Recommended: 50-60 chars (~281px / 580px)

Description Length315 chars

Recommended: 120-160 chars

Issues (2)

  • • Missing H1 tag — every page should have exactly one H1
  • • Most images missing alt text (7/12) — critical for accessibility and SEO

10 issues found

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Local SEO

Local Search Readiness

17/100
Poor
5 11 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

D45/100
Bot Access
20/25
Machine Read.
10/25
Schema Data
3/25
Citation
12/25

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:9%
Words:719
Token eff.:Optimal
Sections/1K:19.5
Depth:2/5

Structured Data

Microdata
Article×1.2microdata

Citation Readiness

Opening Summary248w
Descriptive Headingsavg 6.3w
Canonical URL
Open Graph0/3
Twitter Card1/3
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.
A
82/100
12
Passed
2
Critical
0
Warnings
Images & Alt Text
20/20
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
13/15
Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
ARIA & Roles
6/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
1 recommendation
  • •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.
42/100
F
597 mg
CO₂e / view
5.8 MB
Page Weight
5%
Cleaner Than
New Visitor
683 mg
vs
Returning (cached)
341 mg
Annual (10K/mo)
71.7 kg
Emission Segments
Data Center
29 mg
Network
176 mg
Device
393 mg
Resource Breakdown
JavaScript
133.3 KB
Images
4.9 MB
CSS
774.3 KB
HTML
10.5 KB
Green Hosting Verified
Hetzner Online GmbH
GWF Verified
5 recommendations
  • •Carbon footprint recommendation preview...
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F

Security Score

31%Critical
Interactive

HTTPS

No WAF

67d

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

06.05.2026

Valid Until

04.08.2026

Subject Alternative Names (2)

dza.dewww.dza.de

SHA-256 Fingerprint

26:06:6D:96:C8:13:FB:98:99:07:6C:E7:36:69:ED:D6:F9:9C:66:FE...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

content-encoding
📦 Gzip(gzip)
content-language
de
content-length
10465
content-type
text/html; charset=utf-8
date
Fri, 29 May 2026 07:37:24 GMT
server
nginx
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

73

SPF
DKIM
DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

mail.dza.de

Domain Information

dza.de

Last Updated

28.05.2026

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

Cookie consent banner detected
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.
D
59/100
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, shrink-to-fit=no
3 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Fira Sans

WCAG AA
57/100
Readability
/30
15/30

16px · LH 2.00

Hierarchy
/20
8/20
WCAG
/25
19/25

5.45:1 min contrast

Performance
/25
15/25

1 font · 3 req

Heading Font

Fira Sans

Sans

Body Font

Fira Sans

Sans16px

Contrast Ratio

5.45:1

WCAG AA (≥4.5:1)

Reading Comfort

~40 CPL

Narrow lines
30px
h2
25px
h3
16px
p

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

⚠️ Wide line spacing (2.00). 1.4–1.6 is optimal for body text.

❌ Very complex text: Flesch score 0/100. Consider shorter sentences and simpler words.

✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 5.5:1).

❌ 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 0

Color Palette

9 unique colors
19.9:1 AAA Light
#ffffff
Background· 59%
#09090a
Text· 10.2%
#6a5b55
Primary· 6.1%
#97776a
Secondary· 5.7%
#552421
Secondary· 2.1%

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

21 Resources

13
Scripts
8
Styles
0
Async
0
Defer

Top Script Sources

local(13)

Website Identity

dza.de

+49302607400
Location detected: 🇩🇪 Germanyvia phone
de

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Last analyzed: 29 May 2026 at 07:37

Historical Analysis & Change Tracking