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sprengel-museum.de

https://sprengel-museum.de· First analyzed 15 May 2026· Updated 15 May 2026
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sprengel-museum.de
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Mobile

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Hosting Provider

IONOS (1&1)
ionos.com

IP Address

217.160.0.122

Site Location

🇩🇪 Germanyvia tld

Server Location

🇩🇪 Essen, Germany

ASN

AS8560

Organization

Ionos Inf

Server

Apache

Nameservers

ns1045.ui-dns.com.ns1045.ui-dns.biz.ns1045.ui-dns.org.ns1045.ui-dns.de.

Performance

99

Core Web Vitals

Weight

First Contentful Paint
733 ms10%
Speed Index
953 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
34.5 MB
61 requests

Image Optimization

Lazy LoadResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Frontend
Styling
Bootstrap
CMS
Joomla!
Infrastructure
Hosting
IONOS (1&1)

Technology Stack

8 Technologies Detected

CSS Frameworks

2
Bootstrap
Tailwind CSS

Analytics

2
Google Analytics
Google Analytics 4

Libraries

1
jQuery

Icon Libraries

1
Font Awesome

Tag Managers

1
Google Tag Manager

Web Servers

1
Apache

SEO Analysis

C60/100
15
10
1
Meta Tags8/15
Content11/12
Headings3/8
Technical19/25
E-E-A-T0/7
Images2/7
Links5/5
URL5/5
Social0/5
Freshness0/4
Mobile4/4
Indexability3/3
S
sprengel-museum.desprengel-museum.de

Startseite | Sprengel Museum Hannover

Herzlich willkommen im Sprengel Museum Hannover

Title Length37 chars

Recommended: 50-60 chars (~228px / 580px)

Description Length47 chars

Recommended: 120-160 chars

Issues (1)

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

11 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

1 URLs

robots.txt

18 rules

Local SEO

Local Search Readiness

5/100
Poor
2 13 2

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

Sponsored

AI & LLM Readiness

D42/100
Bot Access
20/25
Machine Read.
10/25
Schema Data
3/25
Citation
9/25

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
header/footer
Text ratio:6%
Words:746
Token eff.:Optimal
Sections/1K:21.4
Depth:1/5

Structured Data

Microdata
Article×1.2microdata

Citation Readiness

Opening Summary90w
Descriptive Headingsavg 3.2w
Canonical URL
Open Graph0/3
Twitter Card0/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (11)
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
78/100
11
Passed
4
Critical
0
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
11/20
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
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.
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.
36/100
F
3.57 g
CO₂e / view
34.5 MB
Page Weight
5%
Cleaner Than
New Visitor
4.08 g
vs
Returning (cached)
2.04 g
Annual (10K/mo)
428.5 kg
Emission Segments
Data Center
175 mg
Network
1.05 g
Device
2.35 g
Resource Breakdown
JavaScript
494.5 KB
Images
33.4 MB
CSS
613.9 KB
HTML
19.7 KB
Green Hosting Verified
IONOS SE
GWF Verified
8 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
F

Security Score

21%Critical
Interactive

HTTPS

No WAF

142d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Sectigo Limited

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

07.04.2026

Valid Until

04.10.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.sprengel-museum.desprengel-museum.de

SHA-256 Fingerprint

B3:83:27:C8:47:EB:3E:9A:26:68:D7:60:3B:D1:DA:38:EC:95:0A:73...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

cache-control
🔴 No Cache(no-store, no-cache, must-revalidate, post-check=0, pre-check...)
content-encoding
📦 Gzip(gzip)
content-type
text/html; charset=utf-8
date
Fri, 15 May 2026 19:38:00 GMT
expires
Wed, 17 Aug 2005 00:00:00 GMT
last-modified
Fri, 15 May 2026 19:38:01 GMT
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

65

SPF
DKIM
DMARC

DMARC Policy

None (Monitor Only)

MX Records (2)

mx01.ionos.de
mx00.ionos.de

Domain Information

sprengel-museum.de

Last Updated

10.06.2025

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

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
76/100
Mobile Friendly4 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

Nobel

WCAG Partial
48/100
Readability
/30
20/30

12px · LH 1.50

Hierarchy
/20
6/20
WCAG
/25
13/25

1:1 min contrast

Performance
/25
9/25

3 fonts · 4 req

Heading Font

Nobel

Sans

Body Font

Nobel

Sans12px

Contrast Ratio

1:1

8 issues

Reading Comfort

~52 CPL

Optimal (45–75)
28px
h2
16px
h3
12px
h4
12px
p

❌ Critical: 12px body text is too small. Minimum 14px, recommend 16px+.

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

✅ Optimal line length: ~52 chars/line (ideal 45–75 CPL).

⚠️ Partial contrast: 8 elements below WCAG AA threshold (min 1.0:1).

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

⚠️ Missing font-display: swap — users may see invisible text while fonts load (FOIT).

Buy on MyFonts

Color Palette

8 unique colors
Light
#ffffff
Background· 28.5%
#15100f
Primary· 25.200000000000003%
#382723
Secondary· 19.700000000000003%
#c7af9a
Secondary· 8.8%
#473d35
Secondary· 7.4%
#877062
Secondary· 3.1%
#e9e4dd
Secondary· 2.1%

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

29 Resources

19
Scripts
10
Styles
8
Async
5
Defer

Top Script Sources

local(14)googletagmanager.com(3)static.kulturkurier.de(1)medien-schluetersche.de(1)

Website Identity

sprengel-museum.de

Sprengel-Museum@Hannover-Stadt.de
Location detected: 🇩🇪 Germanyvia tld
de-de

Sponsored

Last analyzed: 15 May 2026 at 19:38

Historical Analysis & Change Tracking