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hab.de

https://hab.de· First analyzed 02 May 2026· Updated 02 May 2026
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hab.de
Desktop screenshot of hab.de
Mobile screenshot of hab.de
Mobile

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Hosting Provider

DDoS protected

IP Address

185.115.179.137

Site Location

🇩🇪 Germanyvia tld

Server Location

🇩🇪 Röthenbach an der Pegnitz, Germany

ASN

AS204038

Organization

DDoS protected

Server

Apache

Nameservers

dns-1.serv.uni-osnabrueck.de.inet.hab.de.dns1.sonia.de.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
600 ms10%
Speed Index
780 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
2.5 MB
22 requests

Image Optimization

Lazy LoadResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
WordPressv6.9.4
cms
Hab__v1.0.0Custom
by Mobiteam
View Theme

Technology Stack

4 Technologies Detected

Libraries

1
jQueryv3.7.1

CSS Frameworks

1
Tailwind CSS

Analytics

1
Matomo

Web Servers

1
Apache

SEO Analysis

C64/100
18
9
1
Meta Tags8/15
Content11/12
Headings5/8
Technical20/25
E-E-A-T0/7
Images3/7
Links5/5
URL5/5
Social0/5
Freshness0/4
Mobile4/4
Indexability3/3
H
hab.dehab.de

HAB – Herzog August Bibliothek

Herzog August Bibliothek

Title Length30 chars

Recommended: 50-60 chars (~179px / 580px)

Description Length24 chars

Recommended: 120-160 chars

Issues (1)

  • • Most images missing alt text (14/15) — critical for accessibility and SEO

10 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

11 URLs

11 sub-sitemaps

robots.txt

4 rules

Sitemap reference found

Local SEO

Local Search Readiness

20/100
Needs Work
6 11 2

Sponsored

AI & LLM Readiness

D44/100
Bot Access
20/25
Machine Read.
12/25
Schema Data
0/25
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
navheader/footer
Text ratio:10%
Words:2,020
Token eff.:Optimal
Sections/1K:12.4
Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary35w
Descriptive Headingsavg 4.6w
Canonical URL
Open Graph0/3
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.
C
66/100
11
Passed
5
Critical
3
Warnings
Images & Alt Text
18/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
15/20
Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
Forms & Inputs
5/15
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.
3 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.
39/100
E
320 mg
CO₂e / view
2.5 MB
Page Weight
30%
Cleaner Than
New Visitor
365 mg
vs
Returning (cached)
183 mg
Annual (10K/mo)
38.3 kg
Emission Segments
Data Center
71 mg
Network
77 mg
Device
172 mg
Resource Breakdown
JavaScript
78.3 KB
Images
2.0 MB
CSS
395.4 KB
HTML
27.8 KB
Green Hosting Not Verified
DDoS protected
4 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
F

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

17.04.2026

Valid Until

16.07.2026

Subject Alternative Names (2)

hab.dewww.hab.de

SHA-256 Fingerprint

38:87:92:9C:2E:C7:16:40:06:71:D6:35:9D:20:5A:D3:0D:D3:20:97...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges
bytes
cache-control
🔴 No Cache(max-age=0, no-cache, no-store, must-revalidate)
content-encoding
📦 Gzip(gzip)
content-length
28182
content-type
text/html; charset=UTF-8
date
Sat, 02 May 2026 05:27:14 GMT
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

68

SPF
DKIM
DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

mx.hab.de

Domain Information

hab.de

Last Updated

16.01.2019

DNSSEC
Not Enabled

Privacy & Compliance

Borlabs Cookie

Cookie Consent Banner
Borlabs Cookie
Privacy Policy
Terms of Service

GDPR Indicators

Cookie consent banner detected
CMP: Borlabs Cookie
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.
D
56/100
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, maximum-scale=1
3 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

GT Sectra

WCAG AA
72/100
Readability
/30
20/30

14px · LH 1.40

Hierarchy
/20
16/20

2.29x ratio

WCAG
/25
23/25

6.59:1 min contrast

Performance
/25
13/25

1 font · 6 req

Heading Font

GT Sectra

Sans32px

Body Font

GT Sectra

Sans14px

Contrast Ratio

6.59:1

WCAG AA (≥4.5:1)

Reading Comfort

~40 CPL

Narrow lines
32px
h1
32px
h2
16px
h4
14px
p

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

✅ Optimal line spacing: 1.40 ratio (ideal range 1.4–1.6).

✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 6.6:1).

⚠️ Minor heading issue: 1 level skip(s) detected. Maintain sequential order for screen readers.

✅ Strong hierarchy: Headlines are 2.3x larger than body text.

✅ Modern fluid typography: clamp() with rem units ensures zoom accessibility (WCAG 1.4.4).

Buy on MyFontsFluid Type (rem)

Color Palette

9 unique colors
18.07:1 AAA Light
#ffffff
Background· 33%
#171615
Text· 6.9%
#646112
Accent· 23.2%
#374b91
Primary· 9.3%
#555532
Secondary· 1.8%
#31333e
Secondary· 1.4%

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

4 Resources

2
Scripts
2
Styles
0
Async
1
Defer

Top Script Sources

hab.de(2)

Website Identity

hab.de

[email protected]
05331808-0
Location detected: 🇩🇪 Germanyvia tld
de-DE

Sponsored

Last analyzed: 02 May 2026 at 05:27

Historical Analysis & Change Tracking

hab.de Technology Stack - Built With jQuery, Tailwind CSS, Matomo, Apache | StackOptic | StackOptic