hnf.de

https://hnf.de· First analyzed 06 May 2026· Updated 06 May 2026

Export

hnf.de

Mobile

Sponsored

Hosting Provider

GCN SXB1

IP Address

92.205.129.73

Site Location

🇩🇪 Germanyvia tld

Server Location

🇫🇷 Strasbourg, France

ASN

AS21499

Organization

GCN SXB1

Server

Nginx

Nameservers

ns-1922.awsdns-48.co.uk.ns-887.awsdns-46.net.ns-1418.awsdns-49.org.ns-170.awsdns-21.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

470 ms10%

Speed Index

611 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

2 MB

51 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Bootstrap

CMS

TYPO3

Infrastructure

Hosting

GCN SXB1

Technology Stack

7 Technologies Detected

CSS Frameworks

Libraries

UI Components

Analytics

Web Servers

Languages

SEO Analysis

B75/100

Meta Tags9/15

Content12/12

Headings8/8

Technical21/25

E-E-A-T3/7

Images4/7

Links5/5

URL5/5

Social1/5

Freshness0/4

Mobile4/4

Indexability3/3

hnf.dehnf.de

HNF - Heinz Nixdorf MuseumsForum - Weltgrößtes Computermuseum in Pa...

Das Heinz Nixdorf MuseumsForum ist das weltgrößte Computermuseum und zudem ein lebendiger Veranstaltungsort in Paderborn.

Title truncated.

Title Length74 chars

Recommended: 50-60 chars (~469px / 580px)

Description Length121 chars

Recommended: 120-160 chars

Issues (1)

• Title is too long (74 chars, ~469px). Will be truncated in search results.

6 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

6 rules

Sitemap reference found

Allows all crawlers

Local SEO

Local Search Readiness

15/100

Poor

4 12 2

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

Sponsored

AI & LLM Readiness

D43/100

Bot Access

20/25

Machine Read.

10/25

Schema Data

1/25

Citation

12/25

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

blockquotesdef. listsnavheader/footer

Text ratio:9%

Words:929

Token eff.:Optimal

Sections/1K:21.5

Depth:4/5

Structured Data

Microdata

Eventmicrodata

Citation Readiness

Opening Summary23w

Descriptive Headingsavg 2.1w

Canonical URL

Open Graph0/3

Twitter Card1/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (12)

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.

80/100

Passed

Critical

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

9/15

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.

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

252 mg

CO₂e / view

2.0 MB

Page Weight

50%

Cleaner Than

New Visitor

288 mg

Returning (cached)

144 mg

Annual (10K/mo)

30.3 kg

Emission Segments

Data Center

56 mg

Network

61 mg

Device

135 mg

Resource Breakdown

JavaScript

65.4 KB

Images

1.8 MB

CSS

168.3 KB

HTML

11.3 KB

Green Hosting Not Verified

GCN SXB1

4 recommendations

•Carbon footprint recommendation preview...

Upgrade to view recommendations

Security Score

31%Critical

Interactive

HTTPS

No WAF

75d

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

22.04.2026

Valid Until

21.07.2026

Subject Alternative Names (6)

hnf-tagungszentrum.dehnf.denixdorf100.dewww.hnf-tagungszentrum.dewww.hnf.dewww.nixdorf100.de

SHA-256 Fingerprint

05:FA:C6:A4:FA:5E:4F:75:4D:5A:FE:8F:74:41:2E:70:5E:19:77:B0...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

cache-control

🟡 11s(max-age=11)

content-encoding

📦 Gzip(gzip)

content-language

content-type

text/html; charset=utf-8

date

Wed, 06 May 2026 20:34:29 GMT

expires

Wed, 06 May 2026 20:34:39 GMT

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

hnf-de.mail.protection.outlook.com

Domain Information

hnf.de

Last Updated

27.06.2025

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

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.

50/100

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

4 recommendations

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

Fira Sans

WCAG AAA

73/100

Readability

/30

20/30

15px · LH 1.43

Hierarchy

/20

14/20

1.93x ratio · ✓ H1→H6

WCAG

/25

21/25

10.68:1 min contrast

Performance

/25

18/25

1 font · 3 req

Heading Font

Fira Sans

Sans29px

Body Font

Fira Sans

Sans15px

Contrast Ratio

10.68:1

WCAG AAA (≥7:1)

Reading Comfort

~33 CPL

Narrow lines

29px

23px

15px

⚠️ Small text: 15px may strain on mobile. Use ≥16px for WCAG compliance.

✅ Optimal line spacing: 1.43 ratio (ideal range 1.4–1.6).

⚠️ Hard to read: Flesch score 42/100. Simplify sentences for wider reach.

✅ WCAG AAA contrast: All text meets 7:1 ratio (min 10.7:1).

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

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

Buy on MyFontsFlesch 42

Color Palette

12 unique colors

11.2:1 AAA Light

#ffffff

Background· 34.6%

#3b3b3b

Other· 6.6%

#b5d1e9

Primary· 8.1%

#79b1dc

Accent· 7%

#0e1016

Secondary· 7%

#ab9a77

Secondary· 6.3%

#ffe456

Accent· 6.2%

#6a5847

Secondary· 5.7%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Matomo (Piwik)Mid-Market

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

18 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(8)statistics.dm-extra.de(1)

Website Identity

hnf.de

Location detected: 🇩🇪 Germanyvia tld

📧 Microsoft 365de

Social Profiles

Facebook Instagram LinkedIn YouTube Threads

Sponsored

Last analyzed: 06 May 2026 at 20:34

Historical Analysis & Change Tracking