bistum-aachen.de

https://bistum-aachen.de· First analyzed 01 Jun 2026· Updated 01 Jun 2026

Export

bistum-aachen.de

Mobile

Sponsored

Hosting Provider

centron GmbH

IP Address

188.64.57.33

Site Location

🇩🇪 Germanyvia phone

Server Location

🇩🇪 Hallstadt, Germany

ASN

AS200062

Organization

centron GmbH

Nameservers

dns14.netcologne.de.dns11.netcologne.de.dns12.netcologne.de.dns13.netcologne.de.

Performance

Core Web Vitals

Weight

First Contentful Paint

1.6 s10%

Speed Index

2.1 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

7 MB

49 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

centron GmbH

Technology Stack

3 Technologies Detected

CSS Frameworks

Tailwind CSS

Icon Libraries

Font Awesome

Analytics

Matomo

SEO Analysis

B72/100

Meta Tags12/15

Content10/12

Headings3/8

Technical21/25

E-E-A-T2/7

Images6/7

Links5/5

URL5/5

Social4/5

Freshness0/4

Mobile1/4

Indexability3/3

bistum-aachen.debistum-aachen.de

Katholische Kirche - Bistum Aachen

Das Bistum Aachen (lateinisch Dioecesis Aquisgranensis) ist eine römisch-katholische Diözese in der deutschen Kirchenprovinz Köln. ...

Title Length34 chars

Recommended: 50-60 chars (~204px / 580px)

Description Length134 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag — every page should have exactly one H1

9 issues found

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Crawlability

Sitemap

Type: standard

199,207 URLs

robots.txt

Local SEO

Local Search Readiness

21/100

Needs Work

6 12

Sponsored

AI & LLM Readiness

D45/100

Bot Access

20/25

Machine Read.

10/25

Schema Data

2/25

Citation

13/25

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

nav

Text ratio:6%

Words:837

Token eff.:Optimal

Sections/1K:17.9

Depth:1/5

Structured Data

1 JSON-LD

Organization×1.1

Citation Readiness

Opening Summary

Descriptive Headingsavg 5.7w

Canonical URL

Open Graph3/3

Twitter Card1/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (10)

AI readiness recommendation preview...

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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.

76/100

Passed

Critical

Warnings

Images & Alt Text

18/20

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

Semantic Structure

13/20

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.

31/100

891 mg

CO₂e / view

7.0 MB

Page Weight

Cleaner Than

New Visitor

1.02 g

Returning (cached)

509 mg

Annual (10K/mo)

106.9 kg

Emission Segments

Data Center

199 mg

Network

214 mg

Device

478 mg

Resource Breakdown

Images

7.0 MB

HTML

16.2 KB

Other

11.7 KB

Green Hosting Not Verified

centron GmbH

6 recommendations

•Carbon footprint recommendation preview...

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A+

Security Score

93%Excellent

Static / Informational

HTTPS

No WAF

48d

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+H3

Valid From

20.04.2026

Valid Until

19.07.2026

Subject Alternative Names (4)

bistum-aachen.deopencms1.bistum-aachen.dewww.bistum-aachen.dewww.kibac.de

SHA-256 Fingerprint

F0:FC:E0:A1:D0:10:F7:DD:4D:6D:1C:73:FF:D0:83:DB:A7:A7:1C:B4...

Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges

bytes

age

alt-svc

h3=":443"

cache-control

🟡 0s(public, max-age=0)

content-encoding

📦 Gzip(gzip)

content-length

16315

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (2)

mx01.dioezesennetz.de

mx02.dioezesennetz.de

Domain Information

bistum-aachen.de

Last Updated

08.05.2026

DNSSEC

Not Enabled

Privacy & Compliance

Usercentrics

Cookie Consent Banner

Usercentrics

GDPR Indicators

Cookie consent banner detected

CMP: Usercentrics

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.

77/100

Mobile Friendly6 breakpoints

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=1.0, viewport-fit=cover

1 recommendation

•Mobile compatibility recommendation preview...

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Typography & Readability

-apple-system

WCAG Partial

67/100

Readability

/30

21/30

15px · LH 1.50

Hierarchy

/20

8/20

WCAG

/25

19/25

1:1 min contrast

Performance

/25

19/25

System fonts

Heading Font

-apple-system

Sans

Body Font

-apple-system

Sans15px

Contrast Ratio

1:1

1 issue

Reading Comfort

Single Font Family

left aligned

24px

20px

18px

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

✅ Optimal line spacing: 1.50 ratio (ideal range 1.4–1.6).

⚠️ Hard to read: Flesch score 37/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 1 elements below WCAG AA threshold (min 1.0:1).

❌ Missing H1: Every page should have exactly one H1 element for SEO and accessibility.

✅ System fonts: Zero font loading delay — best possible LCP impact.

Flesch 37

Color Palette

9 unique colors

18.8:1 AAA Light

#ffffff

Background· 28.4%

#131113

Text· 6%

#260a3b

Primary· 23.5%

#070206

Accent· 13.1%

#3a2f2e

Secondary· 8.1%

#115dd7

Accent· 5.3%

#f2eae8

Secondary· 3.7%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

8 Resources

Scripts

Styles

Async

Defer

Top Script Sources

bistum-aachen.containers.piwik.pro(2)app.usercentrics.eu(2)cdn.bistum-aachen.de(1)privacy-proxy.usercentrics.eu(1)

Website Identity

Bischöfliches Generalvikariat Aachen

Organization

[email protected]

+49241452-0

www.bistum-aachen.de/

Location detected: 🇩🇪 Germanyvia phone

Social Profiles

Facebook Instagram

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Last analyzed: 01 Jun 2026 at 22:07

Historical Analysis & Change Tracking