What technology does uni-koeln.de use?

uni-koeln.de is built with Apache.

Is uni-koeln.de secure (HTTPS)?

Yes. uni-koeln.de uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Aug 24, 2026.

Who hosts uni-koeln.de?

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

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

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

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

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

uni-koeln.de

Universität zu Köln: Universität zu Köln

Last scanned Jul 21, 2026, 12:33 PM · 1 view

Overall score

Great

Top issues to fix

6 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.
Meta description longer than 160 characters
SEO
Trim the meta description to under 160 characters to avoid truncation in search results.
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.
sitemap.xml not found
SEO
Publish an XML sitemap and reference it from robots.txt to speed up page discovery.
1 broken link on the page
SEO
Fix or remove broken links — they waste crawl budget and erode user trust.

Summary

Die Universität zu Köln ist eine Hochschule mit dem klassischen Fächerspektrum einer Volluniversität. This website uses Apache. SEO is good (75/100) and accessibility is excellent (100/100). Security scores excellent (90/100) and performance excellent (90/100). Top issue: Meta description longer than 160 characters.

SEO

4 issue(s) found

Performance

781 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.

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Meta tags

Title: Universität zu Köln: Universität zu Köln
Description: Die Universität zu Köln ist eine Hochschule mit dem klassischen Fächerspektrum einer Volluniversität. Als eine der größten Hochschulen Europas arbeitet sie in Forschung und Lehre auch international auf höchstem Niveau.
Canonical: https://uni-koeln.de/
Language: de-DE
Charset: utf-8
Viewport: width=device-width, initial-scale=1.0
Robots meta
Manifest

Technologies

Detected frameworks, languages, and tools.

Apache

Hosting & CDN

Hosting provider: —
CDN provider: —
IP address: 134.95.81.52
ASN: —

DNS records

Type	Value
A	134.95.81.52
AAAA	2a00:a200:0:2::80
MX	uzk-mail-in-v2.rrz.uni-koeln.de uzk-mail-in-v1.rrz.uni-koeln.de
TXT	—
NS	dns-1.dfn.de mail1.rrz.uni-koeln.de noc2.rrz.uni-koeln.de ns2.netcologne.de
CAA	—
CNAME	—
IPv6 support	Yes

TLS / SSL certificate

Version: TLS 1.3
Issuer: Let's Encrypt
Subject: uni-koeln.de
Valid from: May 26, 2026
Valid to: Aug 24, 2026
Days until expiry: 34
SAN domains: adenauerlectures.uni-koeln.de, aktuell.uni-koeln.de, amc.uni-koeln.de, antidiskriminierung.uni-koeln.de, ausbildung-ds.uni-koeln.de, career.uni-koeln.de, colognesummerschools.uni-koeln.de, dumachstdenunterschied.uni-koeln.de, energiesparen.uni-koeln.de, erfolgreich-studieren.uni-koeln.de, excellence.uni-koeln.de, exzellenz.uni-koeln.de, fluchtpunkt.uni-koeln.de, food-security.uni-koeln.de, forschung.uni-koeln.de, genderconsulting.uni-koeln.de, genderforum.uni-koeln.de, guestscholars.uni-koeln.de, hub-digital-education.uni-koeln.de, international-scholars.uni-koeln.de, international.uni-koeln.de, karriere.uni-koeln.de, koost.uni-koeln.de, nachhaltigkeit.uni-koeln.de, plan.uni-koeln.de, pressestelle.uni-koeln.de, qm.uni-koeln.de, raum-der-stille.uni-koeln.de, raum-schaffen.uni-koeln.de, raumderstille.uni-koeln.de, raumschaffen.uni-koeln.de, researcher-alumni.uni-koeln.de, si.uni-koeln.de, stiftung-studium-lehre.uni-koeln.de, studium.uni-koeln.de, uni-koeln.de, uoc-sustainability.uni-koeln.de, veraenderung-verw.uni-koeln.de, www.adenauerlectures.uni-koeln.de, www.aktuell.uni-koeln.de, www.amc.uni-koeln.de, www.antidiskriminierung.uni-koeln.de, www.ausbildung-ds.uni-koeln.de, www.career.uni-koeln.de, www.colognesummerschools.uni-koeln.de, www.dumachstdenunterschied.uni-koeln.de, www.energiesparen.uni-koeln.de, www.erfolgreich-studieren.uni-koeln.de, www.excellence.uni-koeln.de, www.exzellenz.uni-koeln.de, www.fluchtpunkt.uni-koeln.de, www.food-security.uni-koeln.de, www.forschung.uni-koeln.de, www.genderconsulting.uni-koeln.de, www.genderforum.uni-koeln.de, www.guestscholars.uni-koeln.de, www.hub-digital-education.uni-koeln.de, www.international-scholars.uni-koeln.de, www.international.uni-koeln.de, www.karriere.uni-koeln.de, www.koost.uni-koeln.de, www.nachhaltigkeit.uni-koeln.de, www.plan.uni-koeln.de, www.pressestelle.uni-koeln.de, www.qm.uni-koeln.de, www.raum-der-stille.uni-koeln.de, www.raum-schaffen.uni-koeln.de, www.raumderstille.uni-koeln.de, www.raumschaffen.uni-koeln.de, www.researcher-alumni.uni-koeln.de, www.si.uni-koeln.de, www.stiftung-studium-lehre.uni-koeln.de, www.studium.uni-koeln.de, www.uni-koeln.de, www.uoc-sustainability.uni-koeln.de, www.veraenderung-verw.uni-koeln.de

Security headers

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

Compression: gzip · 0 cookie(s) observed

Content & assets

Headings

H1 1 · H2 20 · H3 44

Links

108 internal · 91 external · 1 broken

Images

8 total · 0 missing alt

Scripts / Styles

5 scripts · 5 stylesheets

JS / CSS size

94.0 KB · 280 KB

Page size

322 KB

Robots.txt & Sitemap

robots.txt: Found
Disallow rules: 56
sitemap.xml: Not found
URLs in sitemap: 0

SEO issues

Meta description longer than 160 characters
No structured data (JSON-LD) found
Missing OpenGraph tags
sitemap.xml not found

Scan details

Requested URL: https://uni-koeln.de
Final URL: https://uni-koeln.de
HTTP status: 200
HTTP version: HTTP/2
Response time: 775 ms
HTML size: 322 KB
Redirect chain: https://uni-koeln.de

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Frequently asked questions

What technology does uni-koeln.de use?: uni-koeln.de is built with Apache.
Is uni-koeln.de secure (HTTPS)?: Yes. uni-koeln.de uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Aug 24, 2026.
Who hosts uni-koeln.de?: Hosting provider information for uni-koeln.de is not available yet.
What is uni-koeln.de's SEO score?: uni-koeln.de scored 75/100 for SEO in the latest analysis (fair).
What is uni-koeln.de's overall website score?: uni-koeln.de has an overall SiteGraph score of 88/100, combining SEO, performance, security, and accessibility.