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bibsonomy.org

https://bibsonomy.org· First analyzed 26 Apr 2026· Updated 26 Apr 2026
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bibsonomy.org
Desktop screenshot of bibsonomy.org
Mobile screenshot of bibsonomy.org
Mobile

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Hosting Provider

Universitaet Wuerzburg

IP Address

132.187.15.88

Site Location

🇩🇪 Germanyvia ip

Server Location

🇩🇪 Würzburg, Germany

ASN

AS680

Organization

Universitaet Wuerzburg

Nameservers

ns3.inwx.eu.ns.inwx.de.ns2.inwx.de.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
676 ms10%
Speed Index
879 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
622 KB
14 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Universitaet Wuerzburg

Technology Stack

1 Technologies Detected

CSS Frameworks

1
Bootstrap

SEO Analysis

F34/100
12
7
2
Meta Tags4/15
Content0/12
Headings6/8
Technical13/25
E-E-A-T0/7
Images0/7
Links2/5
URL5/5
Social0/5
Freshness0/4
Mobile1/4
Indexability3/3
B
bibsonomy.orgbibsonomy.org

BibSonomy

No description available for this page.

Title Length9 chars

Recommended: 50-60 chars (~56px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (2)

  • • Missing meta description — important for click-through rates in SERPs
  • • Very thin content (19 words). Search engines need substantial content for ranking.

9 issues found

Upgrade to view details

Crawlability

Sitemap
robots.txt

30 rules

Local SEO

Local Search Readiness

3/100
Poor
1 14 2

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

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AI & LLM Readiness

F31/100
Bot Access
20/25
Machine Read.
9/25
Schema Data
0/25
Citation
2/25

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.txtinvalid
llms-full.txt
Semantic HTML
Heading Hierarchy
Text ratio:2%
Words:18
Token eff.:Too Short

Structured Data

No Schema

Citation Readiness

Opening Summary
Descriptive Headings
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...
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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
74/100
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
14/20
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
1/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
1 recommendation
  • •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.
53/100
A
77 mg
CO₂e / view
621.8 KB
Page Weight
80%
Cleaner Than
New Visitor
88 mg
vs
Returning (cached)
44 mg
Annual (10K/mo)
9.2 kg
Emission Segments
Data Center
17 mg
Network
19 mg
Device
41 mg
Resource Breakdown
JavaScript
384.3 KB
CSS
191.4 KB
HTML
46.1 KB
Green Hosting Not Verified
Universitaet Wuerzburg
3 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
B

Security Score

76%Good
Static / Informational

HTTPS

No WAF

39d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/2

Valid From

07.03.2026

Valid Until

05.06.2026

Subject Alternative Names (20)

bibsonomy.asiabibsonomy.debibsonomy.eubibsonomy.infobibsonomy.netbibsonomy.orgbibsonomy.usdev.bibsonomy.org+12 more

SHA-256 Fingerprint

36:56:D1:A9:68:37:60:77:D2:35:BA:0F:2C:70:AF:22:88:CE:60:2E...

Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

content-encoding
📦 Gzip(gzip)
content-type
text/html
date
Sun, 26 Apr 2026 15:00:18 GMT
etag
W/"6937cfdf-1e81"
last-modified
Tue, 09 Dec 2025 07:29:35 GMT
strict-transport-security
max-age=16848000; includeSubDomains; preload;
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

45

SPF
DKIM
DMARC

MX Records (2)

mx2.its.uni-kassel.de
mx1.its.uni-kassel.de

Domain Information

bibsonomy.org

Domain Age
21 years

Created

12.04.2005

Expires

12.04.2027

Last Updated

12.04.2026

Registrar

INWX GmbH

DNSSEC
Not Enabled

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
59/100
Mobile Friendly
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
3 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Arial

WCAG Partial
73/100
Readability
/30
19/30

13px · LH 1.43

Hierarchy
/20
18/20

2.86x ratio · ✓ H1→H6

WCAG
/25
17/25

1.33:1 min contrast

Performance
/25
19/25

System fonts

Heading Font

Arial

Sans36px

Body Font

Arial

Sans13px

Contrast Ratio

1.33:1

7 issues

Reading Comfort

~45 CPL

Optimal (45–75)
36px
h1
28px
h2
18px
h3
16px
h4
13px
p

❌ Critical: 13px body text is too small. Minimum 14px, recommend 16px+.

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

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

⚠️ Hard to read: Flesch score 31/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 7 elements below WCAG AA threshold (min 1.3:1).

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

Flesch 31

Color Palette

5 unique colors
Light
#eeeeee
Background· 42.49999999999999%
#d3d7f6
Primary· 15.2%
#28719a
Accent· 7.9%
#afc1cf
Secondary· 7.4%

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

1 Resources

0
Scripts
1
Styles
0
Async
0
Defer

Top Script Sources

Website Identity

bibsonomy.org

21 years old
Location detected: 🇩🇪 Germanyvia ip
INWX GmbHen

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Last analyzed: 26 Apr 2026 at 15:00

Historical Analysis & Change Tracking