digibib.net

https://digibib.net· First analyzed 24 May 2026· Updated 24 May 2026

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digibib.net

Mobile

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Hosting Provider

Hochschulbibliothekszentrum des Landes Nordrhein-Westfalen

IP Address

193.30.112.50

Site Location

🇩🇪 Germanyvia ip

Server Location

🇩🇪 Cologne, Germany

ASN

AS680

Organization

Hochschulbibliothekszentrum des Landes Nordrhein-Westfalen

Server

Nginx

Nameservers

nse04.hbz-nrw.de.dns1.uni-koeln.de.nse03.hbz-nrw.de.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

539 ms10%

Speed Index

701 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

470 KB

25 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Tailwind CSS

Infrastructure

Hosting

Hochschulbibliothekszentrum des Landes Nordrhein-Westfalen

Technology Stack

4 Technologies Detected

Libraries

CSS Frameworks

Analytics

Web Servers

SEO Analysis

D53/100

Meta Tags7/15

Content9/12

Headings8/8

Technical11/21

E-E-A-T0/7

Images1/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile4/4

Indexability3/3

digibib.netdigibib.net

DigiBib - Digitale Bibliothek - DigiBib

No description available for this page.

Title Length39 chars

Recommended: 50-60 chars (~215px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (2)

• Missing meta description — important for click-through rates in SERPs
• Most images missing alt text (21/21) — critical for accessibility and SEO

8 issues found

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Local SEO

Local Search Readiness

13/100

Poor

4 12 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

F35/100

Bot Access

20/25

Machine Read.

7/25

Schema Data

0/25

Citation

8/25

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:4%

Words:221

Token eff.:Too Short

Sections/1K:9

Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary83w

Descriptive Headingsavg 2.5w

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...

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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.

84/100

Passed

Critical

Warnings

Images & Alt Text

10/20

Checks if images have descriptive alt text for screen readers and visually impaired users.

Semantic Structure

20/20

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

11/15

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.

52/100

58 mg

CO₂e / view

470.4 KB

Page Weight

90%

Cleaner Than

New Visitor

67 mg

Returning (cached)

33 mg

Annual (10K/mo)

7.0 kg

Emission Segments

Data Center

13 mg

Network

14 mg

Device

31 mg

Resource Breakdown

JavaScript

104.4 KB

Images

131.9 KB

CSS

219.9 KB

HTML

6.1 KB

Other

8.0 KB

Green Hosting Not Verified

Hochschulbibliothekszentrum des Landes Nordrhein-Westfalen

4 recommendations

•Carbon footprint recommendation preview...

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Security Score

41%Poor

Interactive

HTTPS

No WAF

122d

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/2

Valid From

23.09.2025

Valid Until

23.09.2026

OCSP Stapling

Enabled

Subject Alternative Names (6)

*.digibib.netdigibib.net*.devel.digibib.netdevel.digibib.net*.stage.digibib.netstage.digibib.net

SHA-256 Fingerprint

EC:99:66:1F:9D:56:C3:3A:7E:7F:0C:07:10:6E:C7:53:59:B7:8A:A6...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

🟡 60s(max-age=60)

content-encoding

⚡ Brotli(br)

content-security-policy

frame-ancestors 'self'; report-to csp; report-uri /csp-repor...

content-security-policy-report-only

default-src 'self' 'report-sample'; img-src 'self' data: htt...

content-type

text/html;charset=UTF-8

date

Sun, 24 May 2026 10:59:18 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

Domain Information

digibib.net

Domain Age

25y 7m

Created

13.10.2000

Expires

13.10.2026

Last Updated

14.10.2025

Registrar

COREhub, S.R.L.

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.

65/100

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

2 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

WixMadeforText

WCAG Partial

75/100

Readability

/30

25/30

18px · LH 1.60

Hierarchy

/20

18/20

2.5x ratio · ✓ H1→H6

WCAG

/25

12/25

1.06:1 min contrast

Performance

/25

20/25

1 font · 2 req

Heading Font

WixMadeforText

Sans45px

Body Font

WixMadeforText

Sans18px

Contrast Ratio

1.06:1

1 issue

Reading Comfort

~41 CPL

Narrow lines

45px

36px

18px

✅ Excellent readability: 18px body text is ideal for all devices.

✅ Optimal line spacing: 1.60 ratio (ideal range 1.4–1.6).

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

⚠️ Partial contrast: 1 elements below WCAG AA threshold (min 1.1:1).

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

✅ Strong hierarchy: Headlines are 2.5x larger than body text.

Buy on MyFontsFlesch 31

Color Palette

7 unique colors

2.07:1 Fail Light

#ffffff

Background· 40.900000000000006%

#b8b3b4

Other· 5.9%

#0000c0

Primary· 30.400000000000002%

#c8d9be

Secondary· 6.4%

#e9e8de

Secondary· 3.4%

#2826b0

Accent· 1.2%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Matomo (Piwik)Mid-Market

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

3 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(2)

Website Identity

digibib.net

25 years old

Hochschulbibliothekszentrum des Landes Nordrhein-Westfalen (hbz)Jülicher Straße 650674 Köln

Location detected: 🇩🇪 Germanyvia ip

COREhub, S.R.L.en

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Last analyzed: 24 May 2026 at 10:59

Historical Analysis & Change Tracking