What technology does erzbistum-koeln.de use?

We did not detect any specific technologies for erzbistum-koeln.de in the latest scan.

Is erzbistum-koeln.de secure (HTTPS)?

Yes. erzbistum-koeln.de uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Sep 3, 2026.

Who hosts erzbistum-koeln.de?

Hosting provider information for erzbistum-koeln.de is not available yet.

What is erzbistum-koeln.de's SEO score?

erzbistum-koeln.de scored 75/100 for SEO in the latest analysis (fair).

What is erzbistum-koeln.de's overall website score?

erzbistum-koeln.de has an overall SiteGraph score of 88/100, combining SEO, performance, security, and accessibility.

erzbistum-koeln.de

Erzbistum Köln

Last scanned Jul 26, 2026, 12:49 PM

Overall score

Great

Summary

Aktuelle Informationen aus allen Bereichen des kirchlichen Lebens und der katholischen Kirche im Erzbistum Köln. SEO is good (75/100) and accessibility is excellent (100/100). Security scores good (80/100) and performance excellent (100/100). Top issue: No structured data (JSON-LD) found.

Aktuelle Informationen aus allen Bereichen des kirchlichen Lebens und der katholischen Kirche im Erzbistum Köln

Top issues to fix

7 issues found · 1 high priority

Missing Content-Security-Policy header
Security
Add a CSP to control which sources can run scripts — the strongest single defense against XSS.
Missing X-Frame-Options header
Security
Add X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.
No structured data (JSON-LD) found
SEO
Add JSON-LD (Organization, Article, Product…) to become eligible for rich results.
Missing OpenGraph tags
SEO
Add og:title/og:description/og:image so shared links render a proper preview card.
robots.txt not found
SEO
Publish /robots.txt with a Sitemap: directive to guide crawlers.
sitemap.xml not found
SEO
Publish an XML sitemap and reference it from robots.txt to speed up page discovery.

+1 more issue — details in the sections below.

SEO

4 issue(s) found

100

Performance

385 ms

Security

HTTPS & header checks

100

Accessibility

0 issue(s) found

Not enough scan history yet to show a trend — check back after this site has been re-scanned a few more times.

Organization

Company details published in this site's own structured data.

Aktuelle Informationen aus allen Bereichen des kirchlichen Lebens und der katholischen Kirche im Erzbistum Köln

Facebook Instagram X (Twitter)LinkedIn YouTube

Meta tags

Title: Erzbistum Köln
Description: Aktuelle Informationen aus allen Bereichen des kirchlichen Lebens und der katholischen Kirche im Erzbistum Köln
Canonical: https://www.erzbistum-koeln.de/start/index.html
Language: de
Charset: UTF-8
Viewport: width=device-width, initial-scale=1.0, viewport-fit=cover
Robots meta: index, follow
Manifest: https://www.erzbistum-koeln.de/export/system/modules/alkacon.mercury.bistuemer.ebk.portal/favicon/site.webmanifest

Technologies

Detected frameworks, languages, and tools.

No technologies detected.

Hosting & CDN

Hosting provider: —
CDN provider: —
IP address: —
ASN: —

DNS records

Type	Value
A	—
AAAA	—
MX	—
TXT	—
NS	—
CAA	—
CNAME	—
IPv6 support	No

TLS / SSL certificate

Version: TLS 1.3
Issuer: Let's Encrypt
Subject: erzbistum-koeln.de
Valid from: Jun 5, 2026
Valid to: Sep 3, 2026
Days until expiry: 36
SAN domains: ebk.koeln, erzbistum-koeln.de, erzbistum-koeln.org, erzbistum.de, www.erzbistum-koeln.de, www.erzbistum-koeln.org

Security headers

Strict-Transport-SecurityEnabled
Content-Security-PolicyMissing
X-Frame-OptionsMissing
X-Content-Type-OptionsEnabled
Referrer-PolicyEnabled
Permissions-PolicyMissing

Compression: gzip · 0 cookie(s) observed

Content & assets

Headings

H1 1 · H2 10 · H3 10

Links

47 internal · 21 external · 20 broken

Images

21 total · 0 missing alt

Scripts / Styles

7 scripts · 2 stylesheets

JS / CSS size

2.3 KB · 0 B

Page size

77.3 KB

Robots.txt & Sitemap

robots.txt: Not found
Disallow rules: 0
sitemap.xml: Not found
URLs in sitemap: 0

SEO issues

No structured data (JSON-LD) found
Missing OpenGraph tags
robots.txt not found
sitemap.xml not found

Scan details

Requested URL: https://erzbistum-koeln.de
Final URL: https://www.erzbistum-koeln.de/start/index.html
HTTP status: 200
HTTP version: HTTP/2
Response time: 384 ms
HTML size: 77.3 KB
Redirect chain: https://erzbistum-koeln.de → https://www.erzbistum-koeln.de/ → https://www.erzbistum-koeln.de/start/index.html

See something wrong on this report? Request a correction

Frequently asked questions

What technology does erzbistum-koeln.de use?: We did not detect any specific technologies for erzbistum-koeln.de in the latest scan.
Is erzbistum-koeln.de secure (HTTPS)?: Yes. erzbistum-koeln.de uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Sep 3, 2026.
Who hosts erzbistum-koeln.de?: Hosting provider information for erzbistum-koeln.de is not available yet.
What is erzbistum-koeln.de's SEO score?: erzbistum-koeln.de scored 75/100 for SEO in the latest analysis (fair).
What is erzbistum-koeln.de's overall website score?: erzbistum-koeln.de has an overall SiteGraph score of 88/100, combining SEO, performance, security, and accessibility.