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koblenz.de

https://koblenz.de· First analyzed 04 May 2026· Updated 04 May 2026
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koblenz.de
Desktop screenshot of koblenz.de
Mobile screenshot of koblenz.de
Mobile

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Hosting Provider

netclusive GmbH

IP Address

89.110.133.100

Site Location

🇩🇪 Germanyvia tld

Server Location

🇩🇪 Montabaur, Germany

ASN

AS24989

Organization

netclusive GmbH

Server

Apache

Nameservers

ns-b.ktk.io.ns-c.ktk.de.ns-a.ktk.de.

Performance

97

Core Web Vitals

Weight

First Contentful Paint
1.0 s10%
Speed Index
1.3 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
9.8 MB
130 requests

Image Optimization

Lazy LoadResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
netclusive GmbH

Progressive Web App

PWA ReadyWeb ManifestService WorkerApple Touch IconTheme Color

Technology Stack

7 Technologies Detected

CSS Frameworks

2
Tailwind CSS
Ant Design

Libraries

1
Axios

UI Components

1
Fancybox

Icon Libraries

1
Font Awesome

Analytics

1
Matomo

Web Servers

1
Apache

SEO Analysis

C62/100
19
10
1
Meta Tags5/15
Content10/12
Headings6/8
Technical18/25
E-E-A-T0/7
Images3/7
Links2/5
URL5/5
Social3/5
Freshness4/4
Mobile3/4
Indexability3/3
K
koblenz.dekoblenz.de

Startseite | Stadt Koblenz

Die offizielle Homepage der Stadt Koblenz

Title Length26 chars

Recommended: 50-60 chars (~154px / 580px)

Description Length41 chars

Recommended: 120-160 chars

Issues (1)

  • • Most images missing alt text (42/76) — critical for accessibility and SEO

11 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

6,877 URLs

robots.txt

Local SEO

Local Search Readiness

12/100
Poor
3 13 1

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

D42/100
Bot Access
20/25
Machine Read.
4/25
Schema Data
3/25
Citation
15/25

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:4%
Words:5,864
Token eff.:Excessive
Sections/1K:1
Depth:1/5

Structured Data

2 JSON-LD
WebSiteSearchAction

Citation Readiness

Opening Summary45w
Descriptive Headingsavg 5.7w
Canonical URL
Open Graph2/3
Twitter Card0/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (9)
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
81/100
14
Passed
3
Critical
1
Warnings
Images & Alt Text
20/20
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
7/15
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.
33/100
F
1.01 g
CO₂e / view
9.8 MB
Page Weight
5%
Cleaner Than
New Visitor
1.15 g
vs
Returning (cached)
577 mg
Annual (10K/mo)
121.2 kg
Emission Segments
Data Center
50 mg
Network
297 mg
Device
664 mg
Resource Breakdown
JavaScript
659.7 KB
Images
230.1 KB
CSS
250.2 KB
Fonts
806.8 KB
HTML
50.9 KB
Other
7.8 MB
Green Hosting Verified
Equinix, Inc.
GWF Verified
7 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
A

Security Score

81%Very Good
Interactive

HTTPS

No WAF

134d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

COMODO CA Limited

Key Algorithm

RSA (4096 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

Valid From

15.08.2025

Valid Until

15.09.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.koblenz.dekoblenz.de

SHA-256 Fingerprint

E0:64:41:57:08:02:26:D9:8B:6C:51:F1:3E:1B:00:EC:6F:77:2E:C8...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

cache-control
🔴 No Cache(no-cache)
content-encoding
📦 Gzip(gzip)
content-security-policy
default-src 'self'; child-src 'self' blob: *.koblenz.de http...
content-type
text/html;charset=UTF-8
date
Mon, 04 May 2026 21:27:41 GMT
last-modified
Mon, 04 May 2026 21:27:41 GMT
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

50

SPF
DKIM
DMARC

MX Records (1)

mx.kgrzdienste.koblenz.de

Domain Information

koblenz.de

Last Updated

03.02.2017

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
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
76/100
Mobile Friendly70 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=1.0, maximum-scale=1.0, user-scalable=no
3 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Roboto Condensed + Open Sans

WCAG Partial
72/100
Readability
/30
20/30

14px · LH 1.60

Hierarchy
/20
20/20

2.57x ratio · ✓ H1→H6

WCAG
/25
16/25

4.01:1 min contrast

Performance
/25
16/25

2 fonts · 23 req

Heading Font

Roboto Condensed

Sans36px

Body Font

Open Sans

Sans14px

Contrast Ratio

4.01:1

11 issues

Reading Comfort

~40 CPL

Narrow lines
36px
h1
36px
h2
21px
h3
14px
p

⚠️ Small text: 14px may strain on mobile. Use ≥16px for WCAG compliance.

✅ Optimal line spacing: 1.60 ratio (ideal range 1.4–1.6).

❌ Very complex text: Flesch score 17/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 11 elements below WCAG AA threshold (min 4.0:1).

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

✅ Strong hierarchy: Headlines are 2.6x larger than body text.

Buy on MyFontsFluid TypeFlesch 17

Color Palette

6 unique colors
17.14:1 AAA Light
#ffffff
Primary· 40.9%
#191c1d
Text· 20.6%

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

6 Resources

5
Scripts
1
Styles
0
Async
3
Defer

Top Script Sources

koblenz.de(5)

Website Identity

Stadt Koblenz

Die offizielle Homepage der Stadt Koblenz

www.koblenz.de/
Location detected: 🇩🇪 Germanyvia tld
de

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Last analyzed: 04 May 2026 at 21:28

Historical Analysis & Change Tracking