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zfk.de

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

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Hosting Provider

IONOS (1&1)
ionos.com

IP Address

217.160.0.232

Site Location

🇩🇪 Germanyvia tld

Server Location

🇩🇪 Essen, Germany

ASN

AS8560

Organization

Ionos Inf

CDN

CloudFront

Nameservers

ns1061.ui-dns.biz.ns1094.ui-dns.com.ns1121.ui-dns.de.ns1085.ui-dns.org.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
463 ms10%
Speed Index
602 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
775 KB
138 requests

Image Optimization

Lazy LoadWebPResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Ghost

Technology Stack

4 Technologies Detected

Frameworks

2
Angularv21.1.0
Express

CSS Frameworks

1
Tailwind CSS

Tag Managers

1
Google Tag Manager

SEO Analysis

C68/100
19
6
1
Meta Tags12/15
Content3/12
Headings8/8
Technical22/25
E-E-A-T2/7
Images3/7
Links5/5
URL5/5
Social2/5
Freshness0/4
Mobile3/4
Indexability3/3
Z
zfk.dezfk.de

ZFK – Zeitung für kommunale Wirtschaft

Das Leitmedium für Stadtwerke und Versorger: Tägliche News zu Energie, Wasser, Entsorgung, Mobilität und Politik – kompetent, verständlich, unabhängig.

Title Length38 chars

Recommended: 50-60 chars (~237px / 580px)

Description Length151 chars

Recommended: 120-160 chars

Issues (1)

  • • Very thin content (6 words). Search engines need substantial content for ranking.

7 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

146 URLs

146 sub-sitemaps

robots.txt

7 rules

Sitemap reference found

Local SEO

Local Search Readiness

12/100
Poor
3 14

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
19/25
Machine Read.
7/25
Schema Data
7/25
Citation
6/25

AI Bot Access

13/14 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
Text ratio:1%
Words:1,833
Token eff.:Optimal

Structured Data

2 JSON-LD
Organization×1.1WebSiteSearchAction
sameAs entity links

Citation Readiness

Opening Summary
Descriptive Headings
Canonical URL
Open Graph2/3
Twitter Card0/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (11)
AI readiness recommendation preview...
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Sponsored

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.
C
68/100
10
Passed
4
Critical
1
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
6/20
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
11/15
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.
3 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.
76/100
A
78 mg
CO₂e / view
774.5 KB
Page Weight
80%
Cleaner Than
New Visitor
89 mg
vs
Returning (cached)
45 mg
Annual (10K/mo)
9.4 kg
Emission Segments
Data Center
4 mg
Network
23 mg
Device
51 mg
Resource Breakdown
JavaScript
506.0 KB
CSS
8.9 KB
HTML
168.6 KB
Other
91.0 KB
Green Hosting Verified
Mittwald CM Service GmbH & Co. KG
GWF Verified
3 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
A+

Security Score

91%Excellent
Static / Informational

HTTPS

No WAF

281d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Amazon

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

19.01.2026

Valid Until

17.02.2027

OCSP Stapling

Enabled

Subject Alternative Names (1)

www.zfk.de

SHA-256 Fingerprint

86:9C:AE:EE:C9:41:7C:09:91:4D:E2:B3:3A:4C:25:DC:1D:4D:77:28...

Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

age
3136
cache-control
🟡 60s(public, s-maxage=60, max-age=60, stale-while-revalidate=3600...)
content-encoding
⚡ Brotli(br)
content-security-policy
frame-ancestors 'self' *.purpledshub.com
content-type
text/html; charset=utf-8
date
Tue, 12 May 2026 13:45:27 GMT
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

70

SPF
DKIM
DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

cluster.winworx.de

Domain Information

zfk.de

Last Updated

02.04.2026

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.
B
77/100
Mobile Friendly187 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 Flex

WCAG AAA
84/100
Readability
/30
20/30

16px · LH 1.40

Hierarchy
/20
19/20

2x ratio · ✓ H1→H6

WCAG
/25
23/25

21:1 min contrast

Performance
/25
22/25

2 fonts · 2 req

Heading Font

Roboto Flex

Sans32px

Body Font

Roboto Flex

Sans16px

Contrast Ratio

21:1

WCAG AAA (≥7:1)

Reading Comfort

~38 CPL

Narrow lines
32px
h1
40px
h2
38px
h3
16px
p
Major Second
Scale

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

✅ Optimal line spacing: 1.40 ratio (ideal range 1.4–1.6).

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

✅ WCAG AAA contrast: All text meets 7:1 ratio (min 21.0:1).

✅ Perfect heading hierarchy: Sequential h1→h2→h3 with single H1 — ideal for SEO & accessibility.

✅ Strong hierarchy: Headlines are 2.0x larger than body text.

Buy on MyFontsVariable FontsFlesch 0

Color Palette

7 unique colors
Light
#ffffff
Background· 72.09999999999998%
#a9dbf2
Primary· 14.500000000000002%
#197bbb
Accent· 5.8%
#78b1d1
Secondary· 1.6%
#cce2eb
Secondary· 1.6%
#185888
Accent· 1%

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

11 Resources

9
Scripts
2
Styles
6
Async
0
Defer

Top Script Sources

cdn.consentmanager.net(3)a.delivery.consentmanager.net(2)c.delivery.consentmanager.net(1)runtime.4656c8e9f2edbc46.js(1)polyfills.29984e11ba10f2d2.js(1)

Website Identity

ZFK – Zeitung für kommunale Wirtschaft

ZFK – Zeitung für kommunale Wirtschaft

Organization
www.zfk.de/
Location detected: 🇩🇪 Germanyvia tld
de

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Last analyzed: 12 May 2026 at 14:37

Historical Analysis & Change Tracking