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stiftung-hsh.de

https://stiftung-hsh.de· First analyzed 21 May 2026· Updated 21 May 2026
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stiftung-hsh.de
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Mobile

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Hosting Provider

Udmedia Hosting

IP Address

185.89.56.61

Site Location

🇩🇪 Germanyvia phone

Server Location

🇩🇪 Frankfurt am Main, Germany

ASN

AS199753

Organization

Udmedia Hosting

Server

Apache

Nameservers

ns3.powerdns.de.ns4.powerdns.de.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
558 ms10%
Speed Index
725 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
2.9 MB
27 requests

Image Optimization

Lazy LoadResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Frontend
Styling
Tailwind CSS
CMS
TYPO3
Infrastructure
Hosting
Udmedia Hosting

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

3 Technologies Detected

CSS Frameworks

1
Tailwind CSS

Analytics

1
Matomo

Web Servers

1
Apache

SEO Analysis

B72/100
22
7
1
Meta Tags10/15
Content10/12
Headings8/8
Technical21/25
E-E-A-T0/7
Images6/7
Links5/5
URL5/5
Social1/5
Freshness0/4
Mobile3/4
Indexability3/3
S
stiftung-hsh.destiftung-hsh.de

Gedenkstätte Berlin-Hohenschönhausen: Das Stasi–Gefängnis

No description available for this page.

Title Length57 chars

Recommended: 50-60 chars (~348px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (1)

  • • Missing meta description — important for click-through rates in SERPs

8 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

1 URLs

1 sub-sitemaps

robots.txt

5 rules

Sitemap reference found

Local SEO

Local Search Readiness

24/100
Needs Work
7 9 2

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AI & LLM Readiness

D41/100
Bot Access
20/25
Machine Read.
11/25
Schema Data
0/25
Citation
10/25

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:6%
Words:715
Token eff.:Optimal
Sections/1K:15.4
Depth:1/5

Structured Data

Microdata

Citation Readiness

Opening Summary135w
Descriptive Headingsavg 2.3w
Canonical URL
Open Graph0/3
Twitter Card1/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (11)
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.
A+
90/100
15
Passed
1
Critical
0
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
13/15
Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
ARIA & Roles
10/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

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.
52/100
E
299 mg
CO₂e / view
2.9 MB
Page Weight
30%
Cleaner Than
New Visitor
342 mg
vs
Returning (cached)
171 mg
Annual (10K/mo)
35.9 kg
Emission Segments
Data Center
15 mg
Network
88 mg
Device
197 mg
Resource Breakdown
JavaScript
162.4 KB
Images
2.4 MB
CSS
325.1 KB
HTML
12.5 KB
Green Hosting Verified
UD Media GmbH
GWF Verified
4 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
B

Security Score

76%Good
Static / Informational

HTTPS

No WAF

72d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

03.05.2026

Valid Until

01.08.2026

Subject Alternative Names (6)

dev.stiftung-hsh.dematomo.stiftung-hsh.destaging.stiftung-hsh.destiftung-hsh.deticketshop.stiftung-hsh.dewww.stiftung-hsh.de

SHA-256 Fingerprint

77:68:37:35:8F:DA:B0:01:DE:D3:03:89:EB:7A:B0:EF:FD:8C:46:BF...

Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

cache-control
🟡 9 Hours(max-age=35619)
content-encoding
📦 Gzip(gzip)
content-language
de-DE
content-length
12520
content-type
text/html; charset=utf-8
date
Thu, 21 May 2026 00:10:21 GMT
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

40

SPF
DKIM
DMARC

DMARC Policy

None (Monitor Only)

MX Records (2)

faust.stiftung-hsh.de
mailrelay01.computer-manufaktur.de

Domain Information

stiftung-hsh.de

Last Updated

18.03.2024

DNSSEC
Not Enabled

Privacy & Compliance

CookieFirst

Cookie Consent Banner
CookieFirst
Privacy Policy
Terms of Service

GDPR Indicators

Cookie consent banner detected
CMP: CookieFirst
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.
A
87/100
Mobile Friendly8 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, shrink-to-fit=no
1 recommendation
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Executive

WCAG Partial
78/100
Readability
/30
24/30

20px · LH 1.50

Hierarchy
/20
17/20

2.6x ratio · ✓ H1→H6

WCAG
/25
19/25

1.84:1 min contrast

Performance
/25
18/25

2 fonts · 5 req

Heading Font

Executive

Sans52px

Body Font

Executive

Sans20px

Contrast Ratio

1.84:1

2 issues

Reading Comfort

Single Font Family

left aligned
52px
h1
46px
h2
25px
h3
20px
p

✅ Excellent readability: 20px body text is ideal for all devices.

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

❌ Very complex text: Flesch score 7/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 2 elements below WCAG AA threshold (min 1.8:1).

✅ 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 Type (rem)Flesch 7

Color Palette

8 unique colors
2.9:1 Fail Dark
#665663
Secondary· 59.099999999999994%
#0a0a09
Text· 5.9%
#ffffff
Primary· 0%
#463440
Secondary· 11.2%
#b1bd95
Secondary· 4.6%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

2
Matomo (Piwik)Mid-Market
Google AnalyticsFree

User behavior and product analytics

1

Categories

2

Total Tools

0

Enterprise

1

Mid-Market

Assessment: Growing marketing technology adoption

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Scripts & Styles

7 Resources

6
Scripts
1
Styles
1
Async
2
Defer

Top Script Sources

local(3)consent.cookiefirst.com(2)matomo.stiftung-hsh.de(1)

Website Identity

stiftung-hsh.de

info@stiftung-hsh.de
+493098608230
Location detected: 🇩🇪 Germanyvia phone
de-DE

Social Profiles

FacebookInstagram

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Last analyzed: 21 May 2026 at 00:10

Historical Analysis & Change Tracking