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upb.de

https://upb.de· First analyzed 08 May 2026· Updated 08 May 2026
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upb.de
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Mobile screenshot of upb.de
Mobile

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Hosting Provider

Universitaet Paderborn

IP Address

131.234.196.27

Site Location

🇩🇪 Germanyvia phone

Server Location

🇩🇪 Paderborn, Germany

ASN

AS680

Organization

Universitaet Paderborn

Server

Apache

Nameservers

dius.uni-paderborn.de.dns-1.dfn.de.dufu.uni-paderborn.de.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
597 ms10%
Speed Index
776 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
1.6 MB
53 requests

Image Optimization

Lazy LoadResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
TYPO3

Technology Stack

5 Technologies Detected

UI Components

1
Swiper

CSS Frameworks

1
Tailwind CSS

Icon Libraries

1
Font Awesome

Analytics

1
Matomo

Web Servers

1
Apache

SEO Analysis

D57/100
16
8
1
Meta Tags9/15
Content3/12
Headings5/8
Technical19/21
E-E-A-T0/7
Images3/7
Links5/5
URL5/5
Social1/5
Freshness0/4
Mobile4/4
Indexability3/3
U
upb.deupb.de

Universität Paderborn

Die Universität Paderborn zählt mit rund 20 000 Studierenden zu den leistungsstarken mittelgroßen Universitäten in Deutschland.

Title Length21 chars

Recommended: 50-60 chars (~125px / 580px)

Description Length127 chars

Recommended: 120-160 chars

Issues (1)

  • • Very thin content (2 words). Search engines need substantial content for ranking.

9 issues found

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Local SEO

Local Search Readiness

22/100
Needs Work
6 10 2

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AI & LLM Readiness

F34/100
Bot Access
20/25
Machine Read.
7/25
Schema Data
3/25
Citation
4/25

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
Text ratio:3%
Words:1,413
Token eff.:Optimal

Structured Data

Microdata
Article×1.2microdata

Citation Readiness

Opening Summary
Descriptive Headings
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...
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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.
B
75/100
10
Passed
3
Critical
0
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
10/20
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
6/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
2 recommendations
  • •Accessibility recommendation preview...
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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.
50/100
C
208 mg
CO₂e / view
1.6 MB
Page Weight
60%
Cleaner Than
New Visitor
237 mg
vs
Returning (cached)
119 mg
Annual (10K/mo)
24.9 kg
Emission Segments
Data Center
46 mg
Network
50 mg
Device
111 mg
Resource Breakdown
JavaScript
292.1 KB
Images
1.2 MB
CSS
159.8 KB
HTML
19.3 KB
Green Hosting Not Verified
Universitaet Paderborn
4 recommendations
  • •Carbon footprint recommendation preview...
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A

Security Score

81%Very Good
Interactive

HTTPS

No WAF

299d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

Hellenic Academic and Research Institutions CA

Key Algorithm

RSA (4096 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

04.03.2026

Valid Until

04.03.2027

OCSP Stapling

Enabled

Subject Alternative Names (20)

www.uni-paderborn.deen.wiwi.uni-paderborn.dechemie.uni-paderborn.deket.uni-paderborn.dewww.plaz.upb.deen.www.uni-paderborn.dewww.dmrc.upb.dewww.zim.upb.de+12 more

SHA-256 Fingerprint

ED:73:59:04:6F:4E:37:86:56:D1:D3:C5:C8:5D:35:03:2B:3A:F8:4E...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control
🟡 2082s(max-age=2082)
content-encoding
📦 Gzip(gzip)
content-language
de-DE
content-security-policy
default-src 'self' 'unsafe-inline' https://*.uni-paderborn.d...
content-type
text/html; charset=utf-8
date
Fri, 08 May 2026 21:25:18 GMT
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

70

SPF
DKIM
DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

mail.uni-paderborn.de

Domain Information

upb.de

Last Updated

26.05.2025

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

Privacy policy page linked
Data Protection Officer mentioned

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
71/100
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, minimum-scale=1, maximum-scale=5
2 recommendations
  • •Mobile compatibility recommendation preview...
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Typography & Readability

Karla

WCAG AAA
74/100
Readability
/30
23/30

22px · LH 1.64

Hierarchy
/20
13/20

2.09x ratio

WCAG
/25
20/25

10.65:1 min contrast

Performance
/25
18/25

1 font · 4 req

Heading Font

Karla

Sans46px

Body Font

Karla

Sans22px

Contrast Ratio

10.65:1

WCAG AAA (≥7:1)

Reading Comfort

~39 CPL

Narrow lines
46px
h1
42px
h2
30px
h3
22px
p

✅ Excellent readability: 22px body text is ideal for all devices.

❌ Very complex text: Flesch score 0/100. Consider shorter sentences and simpler words.

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

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

✅ Strong hierarchy: Headlines are 2.1x larger than body text.

❌ Pure vw font sizes: Viewport units alone break browser zoom (WCAG 1.4.4 fail). Use clamp(rem, vw, rem).

Buy on MyFontsFlesch 0

Color Palette

12 unique colors
Light
#ffffff
Text· 14.3%
#6e94d0
Accent· 13.3%
#4b82cd
Accent· 11.6%
#6b748e
Secondary· 7.5%
#a2a9ba
Secondary· 7.1%
#101b32
Accent· 6.5%
#273048
Secondary· 6.5%
#060a1c
Primary· 5.9%

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

22 Resources

12
Scripts
10
Styles
1
Async
8
Defer

Top Script Sources

local(11)piwik.uni-paderborn.de(1)

Website Identity

upb.de

+49 5251 60-0

Warburger Str. 10033098 PaderbornDeutschland

Location detected: 🇩🇪 Germanyvia phone
de-DE

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Last analyzed: 08 May 2026 at 21:25

Historical Analysis & Change Tracking