StackOptic
Back to Search
koelnerliste.com favicon

koelnerliste.com

https://koelnerliste.com· First analyzed 21 May 2026· Updated 21 May 2026
Export
koelnerliste.com
Desktop screenshot of koelnerliste.com
Mobile screenshot of koelnerliste.com
Mobile

Sponsored

Hosting Provider

Hetzner
hetzner.com

IP Address

78.47.166.57

Site Location

🇩🇪 Germanyvia ip

Server Location

🇩🇪 Nuremberg, Germany

ASN

AS24940

Organization

Hetzner

Server

Apache

Nameservers

ns73.domaincontrol.com.ns74.domaincontrol.com.

Performance

98

Core Web Vitals

Weight

First Contentful Paint
923 ms10%
Speed Index
1.2 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
767 KB
22 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
TYPO3

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

3 Technologies Detected

CSS Frameworks

1
Tailwind CSS

Analytics

1
Google Analytics

Web Servers

1
Apache

SEO Analysis

C66/100
19
7
2
Meta Tags7/15
Content12/12
Headings3/8
Technical19/25
E-E-A-T3/7
Images1/7
Links5/5
URL5/5
Social4/5
Freshness0/4
Mobile4/4
Indexability3/3
K
koelnerliste.comkoelnerliste.com

Kölner Liste: Home

Auf der Kölner Liste® sind Nahrungsergänzungsmittel, die auf Dopingsubstanzen getestet wurden. Die Kölner Liste® ist keine Empfehlung an Sportler, ein Nahrun...

Description truncated.
Title Length18 chars

Recommended: 50-60 chars (~107px / 580px)

Description Length266 chars

Recommended: 120-160 chars

Issues (2)

  • • Missing H1 tag — every page should have exactly one H1
  • • Most images missing alt text (5/5) — critical for accessibility and SEO

9 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

4 URLs

4 sub-sitemaps

robots.txt

6 rules

Sitemap reference found

Local SEO

Local Search Readiness

15/100
Poor
4 12 2

This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

Sponsored

AI & LLM Readiness

D46/100
Bot Access
20/25
Machine Read.
9/25
Schema Data
0/25
Citation
17/25

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:12%
Words:574
Token eff.:Optimal
Sections/1K:10.5
Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary27w
Descriptive Headingsavg 3.7w
Canonical URL
Open Graph3/3
Twitter Card3/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (8)
AI readiness recommendation preview...
Upgrade to view recommendations

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.
B
71/100
11
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
13/20
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
9/15
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.
71/100
A
77 mg
CO₂e / view
766.7 KB
Page Weight
80%
Cleaner Than
New Visitor
89 mg
vs
Returning (cached)
44 mg
Annual (10K/mo)
9.3 kg
Emission Segments
Data Center
4 mg
Network
23 mg
Device
51 mg
Resource Breakdown
JavaScript
138.0 KB
Images
11.7 KB
CSS
590.1 KB
HTML
7.0 KB
Other
20.0 KB
Green Hosting Verified
Hetzner Online GmbH
GWF Verified
2 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
A

Security Score

86%Very Good
Interactive

HTTPS

No WAF

23d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Starfield Technologies, Inc.

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

15.05.2025

Valid Until

14.06.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

www.koelnerliste.comkoelnerliste.com

SHA-256 Fingerprint

6D:5D:59:E2:9E:F7:90:43:F5:FF:33:9F:B9:85:81:C5:1B:5A:6A:C9...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations
Upgrade to view header details

HTTP Headers

Developer Console

cache-control
🔴 No Cache(private, no-store, max-age=0)
content-encoding
📦 Gzip(gzip)
content-language
de-DE
content-length
6869
content-security-policy
default-src 'self'; base-uri 'none'; img-src 'self' data:; s...
content-type
text/html; charset=utf-8
Good Warning Issue

Email Infrastructure

Microsoft 365

Score

65

SPF
DKIM
DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

koelnerliste-com.mail.protection.outlook.com

Domain Information

koelnerliste.com

Domain Age
19y 8m

Created

25.09.2006

Expires

25.09.2026

Last Updated

24.09.2025

Registrar

Mesh Digital Limited

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.
C
68/100
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=1.0
2 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Kreon + Akrobat

WCAG Partial
55/100
Readability
/30
25/30

18px · LH 1.43

Hierarchy
/20
4/20
WCAG
/25
15/25

1:1 min contrast

Performance
/25
11/25

3 fonts · 3 req

Heading Font

Kreon

Sans

Body Font

Akrobat

Sans18px

Contrast Ratio

1:1

4 issues

Reading Comfort

Dual Sans-Serif

left aligned
54px
h2
38px
h3
18px
p

✅ Excellent readability: 18px body text is ideal for all devices.

✅ Optimal line spacing: 1.43 ratio (ideal range 1.4–1.6).

❌ Very complex text: Flesch score 8/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 4 elements below WCAG AA threshold (min 1.0:1).

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

⚠️ Text justify detected: Justified text creates uneven word spacing, hurting readability on web.

Buy on MyFontsFlesch 8

Color Palette

7 unique colors
7.3:1 AAA Light
#ffffff
Background· 30.1%
#4e585d
Secondary· 1.3%
#00539f
Primary· 0%
#001b2c
Accent· 22.7%
#1c2f3a
Primary· 9.9%
#294651
Secondary· 8.3%

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

Sponsored

Scripts & Styles

9 Resources

6
Scripts
3
Styles
0
Async
1
Defer

Top Script Sources

local(6)

Website Identity

koelnerliste.com

19 years old
Location detected: 🇩🇪 Germanyvia ip
Mesh Digital Limited📧 Microsoft 365de-DE

Social Profiles

Facebook

Sponsored

Last analyzed: 21 May 2026 at 09:47

Historical Analysis & Change Tracking