koeln.de

https://koeln.de· First analyzed 26 Apr 2026· Updated 26 Apr 2026

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koeln.de

Mobile

Sponsored

Hosting Provider

NetCologne GmbH

IP Address

81.173.246.122

Site Location

🇩🇪 Germanyvia tld

Server Location

🇩🇪 Cologne, Germany

ASN

AS8422

Organization

NetCologne GmbH

Server

Apache

Nameservers

dns13.netcologne.de.dns14.netcologne.de.dns12.netcologne.de.dns11.netcologne.de.

Performance

Core Web Vitals

Weight

First Contentful Paint

1.5 s10%

Speed Index

2.0 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

1.1 MB

76 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPressv6.9.4

cms

GeneratePressv3.6.1

by Tom Usborne

View Theme

Technology Stack

16 Technologies Detected

Plugins

Events Calendar Pro Kde Site Plugins Gp Premium Nextend Smart Slider3 Pro Feedzy Rss Feeds The Events Calendar Generateblocks Pro

Analytics

Libraries

CSS Frameworks

Tag Managers

Web Servers

Languages

Customer Support

SEO Analysis

A+90/100

Meta Tags14/15

Content10/12

Headings3/8

Technical24/25

E-E-A-T7/7

Images7/7

Links5/5

URL5/5

Social5/5

Freshness4/4

Mobile3/4

Indexability3/3

koeln.dekoeln.de

Köln - Das offizielle Stadtportal für Köln | koeln.de

Offizielle Webseite für Köln mit Informationen zu Stadt, Events, Sehenswürdigkeiten und Freizeitmöglichkeiten.

Title Length53 chars

Recommended: 50-60 chars (~306px / 580px)

Description Length110 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag — every page should have exactly one H1

4 issues found

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Crawlability

Sitemap

Type: index

25 URLs

25 sub-sitemaps

robots.txt

218 rules

Sitemap reference found

Local SEO

Local Search Readiness

14/100

Poor

4 14

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

Sponsored

AI & LLM Readiness

D48/100

Bot Access

20/25

Machine Read.

1/25

Schema Data

13/25

Citation

14/25

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

Text ratio:6%

Words:4,803

Token eff.:Poor Structure

Structured Data

6 JSON-LD

Article×1.2Person×1.3Organization×1.1WebSiteSearchAction

sameAs entity links

Citation Readiness

Opening Summary347w

Descriptive Headings

Canonical URL

Open Graph3/3

Twitter Card3/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (9)

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.

77/100

Passed

Critical

Warnings

Images & Alt Text

15/20

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

15/15

Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).

ARIA & Roles

4/15

Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

2 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.

53/100

136 mg

CO₂e / view

1.1 MB

Page Weight

70%

Cleaner Than

New Visitor

155 mg

Returning (cached)

78 mg

Annual (10K/mo)

16.3 kg

Emission Segments

Data Center

30 mg

Network

33 mg

Device

73 mg

Resource Breakdown

JavaScript

132.3 KB

Images

739.8 KB

CSS

147.4 KB

HTML

73.3 KB

Other

3.6 KB

Green Hosting Not Verified

NetCologne GmbH

5 recommendations

•Carbon footprint recommendation preview...

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Security Score

71%Good

Static / Informational

HTTPS

No WAF

39d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Unizeto Technologies S.A.

Key Algorithm

RSA (4096 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

06.05.2025

Valid Until

05.06.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.koeln.dekoeln.de

SHA-256 Fingerprint

9E:9D:C4:02:1E:0F:50:89:A8:82:43:BC:3F:B2:78:F2:4B:4B:1F:8E...

Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

cache-control

🟡 721s(max-age=721)

connection

Keep-Alive

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=UTF-8

date

Sun, 26 Apr 2026 21:11:33 GMT

link

<https://www.koeln.de/wp-json/>; rel="https://api.w.org/", <...

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (2)

secondary.snafu.de

mailin.koeln.de

Domain Information

koeln.de

Last Updated

05.10.2015

DNSSEC

Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner

Cookiebot

GDPR Indicators

Cookie consent banner detected

CMP: Cookiebot

Data Protection Officer mentioned

Legitimate interest basis 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.

84/100

Mobile Friendly36 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

1 recommendation

•Mobile compatibility recommendation preview...

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Typography & Readability

GilroyBlack + GilroyMedium

WCAG Partial

68/100

Readability

/30

28/30

18px · LH 1.50

Hierarchy

/20

7/20

WCAG

/25

15/25

1:1 min contrast

Performance

/25

18/25

2 fonts · 4 req

Heading Font

GilroyBlack

Sans

Body Font

GilroyMedium

Sans18px

Contrast Ratio

1:1

5 issues

Reading Comfort

~45 CPL

Optimal (45–75)

36px

24px

18px

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

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

✅ Optimal line length: ~45 chars/line (ideal 45–75 CPL).

⚠️ Hard to read: Flesch score 35/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 5 elements below WCAG AA threshold (min 1.0:1).

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

Buy on MyFontsFluid Type (rem)Flesch 35

Color Palette

8 unique colors

17.94:1 AAA Light

#ffffff

Background· 45.2%

#141814

Secondary· 5%

#190201

Primary· 12%

#65090c

Accent· 1.5%

Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

CookiebotMid-Market

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

koeln.de(8)ed.koeln.de(4)consent.cookiebot.com(3)googletagmanager.com(2)data-dc874fa9ed.koeln.de(2)

Website Identity

Stadtportal koeln.de

Organization

Offizielle Webseite für Köln mit Informationen zu Stadt, Events, Sehenswürdigkeiten und Freizeitmöglichkeiten.

www.koeln.de/author/lara-malm/

Location detected: 🇩🇪 Germanyvia tld

Social Profiles

Facebook X (Twitter)Instagram

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Last analyzed: 26 Apr 2026 at 21:14

Historical Analysis & Change Tracking