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vku.de

https://vku.de· First analyzed 12 May 2026· Updated 12 May 2026
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vku.de
Desktop screenshot of vku.de
Mobile screenshot of vku.de
Mobile

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Hosting Provider

Hetzner
hetzner.com

IP Address

142.132.198.98

Site Location

🇩🇪 Germanyvia phone

Server Location

🇩🇪 Falkenstein, Germany

ASN

AS24940

Organization

Hetzner

Server

Apache

Nameservers

a.ns14.net.b.ns14.net.d.ns14.net.c.ns14.net.

Performance

98

Core Web Vitals

Weight

First Contentful Paint
870 ms10%
Speed Index
1.1 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
3.5 MB
69 requests

Image Optimization

Lazy LoadResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
TYPO3

Technology Stack

5 Technologies Detected

Libraries

1
jQuery

UI Components

1
Slick Carousel

CSS Frameworks

1
Tailwind CSS

Analytics

1
Matomo

Web Servers

1
Apache

SEO Analysis

B74/100
21
5
1
Meta Tags14/15
Content12/12
Headings8/8
Technical17/25
E-E-A-T3/7
Images1/7
Links5/5
URL5/5
Social2/5
Freshness0/4
Mobile4/4
Indexability3/3
V
vku.devku.de

Verband kommunaler Unternehmen e.V. (VKU) | VKU

Der Verband kommunaler Unternehmen e.V. (VKU) ist die Interessenvertretung der kommunalen Versorgungs- und Entsorgungswirtschaft in Deutschland.

Title Length47 chars

Recommended: 50-60 chars (~291px / 580px)

Description Length144 chars

Recommended: 120-160 chars

Issues (1)

  • • Most images missing alt text (17/30) — critical for accessibility and SEO

6 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

F39/100
Bot Access
20/25
Machine Read.
8/25
Schema Data
0/25
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
nav
Text ratio:3%
Words:1,652
Token eff.:Optimal
Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary488w
Descriptive Headingsavg 3w
Canonical URL
Open Graph0/3
Twitter Card1/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (11)
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.
A
82/100
13
Passed
2
Critical
0
Warnings
Images & Alt Text
15/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
17/20
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
7/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
1 recommendation
  • •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.
43/100
F
364 mg
CO₂e / view
3.5 MB
Page Weight
15%
Cleaner Than
New Visitor
416 mg
vs
Returning (cached)
208 mg
Annual (10K/mo)
43.7 kg
Emission Segments
Data Center
18 mg
Network
107 mg
Device
239 mg
Resource Breakdown
JavaScript
820.8 KB
Images
2.4 MB
CSS
202.4 KB
HTML
81.9 KB
Green Hosting Verified
Hetzner Online GmbH
GWF Verified
5 recommendations
  • •Carbon footprint recommendation preview...
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C

Security Score

65%Fair
Critical / Transactional

HTTPS

No WAF

43d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

ZeroSSL

Key Algorithm

RSA (2048 bit)

Signature

SHA-384 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

26.03.2026

Valid Until

24.06.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

www.vku.devku.de

SHA-256 Fingerprint

5E:4E:CE:2D:98:1A:FF:8F:81:6D:AF:55:4D:EF:84:F6:B8:68:7C:93...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control
🔴 No Cache(private, no-store, max-age=0)
content-encoding
📦 Gzip(gzip)
content-language
de-DE
content-security-policy
form-action 'self';
content-type
text/html; charset=utf-8
date
Tue, 12 May 2026 00:55:15 GMT
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

70

SPF
DKIM
DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

mail.vku.de

Domain Information

vku.de

Last Updated

13.12.2017

DNSSEC
Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner
Cookiebot
Privacy Policy
Terms of Service

GDPR Indicators

Cookie consent banner detected
CMP: Cookiebot
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
72/100
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

Fago

WCAG Partial
57/100
Readability
/30
25/30

16px · LH 1.50

Hierarchy
/20
7/20

1x ratio

WCAG
/25
10/25

3.04:1 min contrast

Performance
/25
15/25

1 font · 2 req

Heading Font

Fago

Sans16px

Body Font

Fago

Sans16px

Contrast Ratio

3.04:1

7 issues

Reading Comfort

~37 CPL

Narrow lines
16px
h1
34px
h2
32px
h3
16px
p
Perfect Fifth
Scale

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

✅ Optimal line spacing: 1.50 ratio (ideal range 1.4–1.6).

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

⚠️ Partial contrast: 7 elements below WCAG AA threshold (min 3.0:1).

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

⚠️ Weak hierarchy: Headlines should be ≥2x body size for clear visual structure.

Buy on MyFontsFlesch 0

Color Palette

8 unique colors
2.48:1 Fail Light
#ffffff
Primary· 69.4%
#a3a5a3
Other· 4.6%
#dbe1e3
Secondary· 11.1%
#bdd3da
Secondary· 3.2%
#227eab
Accent· 2.4%
#7ca8ba
Secondary· 1.5%

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

30 Resources

20
Scripts
10
Styles
2
Async
5
Defer

Top Script Sources

local(19)stats.vku.de(1)

Website Identity

vku.de

+493058580
Location detected: 🇩🇪 Germanyvia phone
de

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Last analyzed: 12 May 2026 at 00:56

Historical Analysis & Change Tracking