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museum-kassel.de

https://museum-kassel.de· First analyzed 14 May 2026· Updated 14 May 2026
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museum-kassel.de
Desktop screenshot of museum-kassel.de
Mobile screenshot of museum-kassel.de
Mobile

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Hosting Provider

IONOS (1&1)
ionos.com

IP Address

217.160.0.68

Site Location

🇩🇪 Germanyvia tld

Server Location

🇩🇪 Essen, Germany

ASN

AS8560

Organization

Ionos Inf

Server

Vercel

Nameservers

ns1124.ui-dns.biz.ns1124.ui-dns.org.ns1124.ui-dns.com.ns1124.ui-dns.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%
1.7 MB
64 requests

Image Optimization

Lazy LoadResponsiveVercel Image Optimization
0–49
50–89
90–100

Architecture Stack

JAMstack
🔀 Hybrid
Decoupled
Frontend
Framework
Next.js
API
Data Source
Headless CMS
Storyblok
Infrastructure
Platform
Vercel
CDN
Vercel Image

Detected API Sources

https://a.storyblok.com/f/9618...

Technology Stack

5 Technologies Detected

Meta Frameworks

1
Next.js

CSS Frameworks

1
Tailwind CSS

Icon Libraries

1
Font Awesome

Analytics

1
Matomo

Platforms

1
Vercel

SEO Analysis

C63/100
17
9
2
Meta Tags12/15
Content10/12
Headings3/8
Technical14/25
E-E-A-T0/7
Images3/7
Links5/5
URL5/5
Social4/5
Freshness0/4
Mobile4/4
Indexability3/3
M
museum-kassel.demuseum-kassel.de

Hessen Kassel Heritage - Museums, Castles, Parks

Hessen Kassel Heritage is one of Germany's largest art and cultural institutions and manages the museums, castles, and parks of the former landgraves and ele...

Description truncated.
Title Length48 chars

Recommended: 50-60 chars (~292px / 580px)

Description Length308 chars

Recommended: 120-160 chars

Issues (2)

  • • Missing H1 tag — every page should have exactly one H1
  • • Most images missing alt text (68/83) — critical for accessibility and SEO

11 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

1 URLs

1 sub-sitemaps

robots.txt

4 rules

Sitemap reference found

Allows all crawlers

Local SEO

Local Search Readiness

17/100
Poor
6 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

D43/100
Bot Access
20/25
Machine Read.
10/25
Schema Data
0/25
Citation
13/25

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
data-nosnippet

Machine Readability

llms.txt
llms-full.txt
Semantic HTML
Heading Hierarchy
nav
Text ratio:1%
Words:1,096
Token eff.:Optimal
Sections/1K:17.3
Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary21w
Descriptive Headingsavg 5w
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...
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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
3
Warnings
Images & Alt Text
18/20
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
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.
2 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.
63/100
C
180 mg
CO₂e / view
1.7 MB
Page Weight
60%
Cleaner Than
New Visitor
205 mg
vs
Returning (cached)
103 mg
Annual (10K/mo)
21.5 kg
Emission Segments
Data Center
9 mg
Network
53 mg
Device
118 mg
Resource Breakdown
JavaScript
470.8 KB
Images
962.4 KB
CSS
67.2 KB
HTML
156.6 KB
Other
120.7 KB
Green Hosting Verified
IONOS SE
GWF Verified
4 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
B

Security Score

76%Good
Static / Informational

HTTPS

No WAF

86d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

10.05.2026

Valid Until

08.08.2026

Subject Alternative Names (1)

www.heritage-kassel.de

SHA-256 Fingerprint

06:25:FB:8A:41:B8:CB:09:2D:90:2C:0C:1B:B8:AE:C0:E3:08:5B:23...

Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

age
796
cache-control
🟡 0s(public, max-age=0, must-revalidate)
content-encoding
⚡ Brotli(br)
content-type
text/html; charset=utf-8
date
Thu, 14 May 2026 10:57:48 GMT
etag
W/"yxjarxkzs2o4ih"
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

70

SPF
DKIM
DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

mail.museum-kassel.de

Domain Information

museum-kassel.de

Last Updated

13.08.2018

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
70/100
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
1 recommendation
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

PPHeritage

WCAG AA
73/100
Readability
/30
23/30

16px · LH 1.50

Hierarchy
/20
8/20
WCAG
/25
22/25

5.46:1 min contrast

Performance
/25
20/25

1 font · 2 req

Heading Font

PPHeritage

Sans

Body Font

PPHeritage

Sans16px

Contrast Ratio

5.46:1

WCAG AA (≥4.5:1)

Reading Comfort

~36 CPL

Narrow lines
32px
h2
16px
p

✅ 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 20/100. Consider shorter sentences and simpler words.

✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 5.5:1).

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

✅ Lean font stack: 1 font families keeps load times fast.

Buy on MyFontsFlesch 21

Color Palette

9 unique colors
3.69:1 AA Large Light
#fafafa
Background· 30.7%
#7f8289
Other· 1.5%
#8f77b3
Primary· 16.1%
#171a11
Secondary· 15.4%
#7e5d85
Secondary· 8.7%
#47373d
Secondary· 5.6%
#a89592
Secondary· 2.9%

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

23 Resources

20
Scripts
3
Styles
18
Async
0
Defer

Top Script Sources

local(20)

Website Identity

museum-kassel.de

info@heritage-kassel.de

Löwenburg

Location detected: 🇩🇪 Germanyvia tld
en

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Last analyzed: 14 May 2026 at 11:11

Historical Analysis & Change Tracking