What technology does uni-due.de use?

uni-due.de is built with PHP, jQuery, Apache.

Is uni-due.de secure (HTTPS)?

Yes. uni-due.de uses TLS 1.2 with a certificate issued by Hellenic Academic and Research Institutions CA, valid until Nov 14, 2026.

Who hosts uni-due.de?

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

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

uni-due.de scored 55/100 for SEO in the latest analysis (fair).

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

uni-due.de has an overall SiteGraph score of 83/100, combining SEO, performance, security, and accessibility.

Has uni-due.de's score changed over time?

uni-due.de's overall score has stayed steady at 83/100 since Jul 25, 2026.

uni-due.de

Willkommen an der Universität Duisburg-Essen

Last scanned Aug 1, 2026, 2:00 PM · 10 views

Overall score

Great

Summary

This website uses PHP. SEO is fair (55/100) and accessibility is excellent (100/100). Security scores good (85/100) and performance excellent (100/100). Top issue: Missing meta description.

Top issues to fix

11 issues found · 2 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 meta description
SEO
Add a ~150-character meta description to control your search-result snippet and lift click-through rate.
Missing X-Content-Type-Options header
Security
Add X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
1 cookie without Secure/HttpOnly flags
Security
Set Secure and HttpOnly on session cookies so they can't leak over HTTP or be read by injected scripts.
Missing canonical link
SEO
Add <link rel="canonical"> so search engines know which URL variant to index.
Multiple H1 headings found
SEO
Keep a single H1 per page and demote the others to H2/H3.

+5 more issues — details in the sections below.

SEO

7 issue(s) found

100

Performance

500 ms

Security

HTTPS & header checks

100

Accessibility

0 issue(s) found

Score history

0 overall since Jul 25, 2026

Overall: 83
SEO: 55
Security: 85
Performance: 100
Accessibility: 100

Organization

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

Instagram YouTube Facebook YouTube

Contact

Email, phone, and address published on this site's own pages.

Email: international@uni-due.de webredaktion@uni-due.de
Phone: %2b49%20203%20379%2d1800%20%28Telefonzentrale%29

Meta tags

Title: Willkommen an der Universität Duisburg-Essen
Description
Canonical
Language: de-1996
Charset: utf-8
Viewport: width=device-width, initial-scale=1, shrink-to-fit=no
Robots meta: index,follow
Manifest: https://www.uni-due.de/manifest.json

Technologies

Detected frameworks, languages, and tools.

PHP jQuery Apache

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 1.2
Issuer: Hellenic Academic and Research Institutions CA
Subject: uni-due.de
Valid from: Nov 14, 2025
Valid to: Nov 14, 2026
Days until expiry: 104
SAN domains: uni-due.de, www.uni-due.de, www-restart.uni-duisburg-essen.de, uni-duisburg-essen.de, www.uni-duisburg-essen.de, www-restart.uni-due.de

Security headers

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

Compression: gzip · 1 cookie(s) observed

Content & assets

Headings

H1 5 · H2 22 · H3 0

Links

91 internal · 29 external · 20 broken

Images

44 total · 0 missing alt

Scripts / Styles

4 scripts · 3 stylesheets

JS / CSS size

144 B · 0 B

Page size

71.2 KB

Robots.txt & Sitemap

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

SEO issues

Missing meta description
Missing canonical link
Multiple H1 headings found
No structured data (JSON-LD) found
Missing OpenGraph tags
robots.txt not found
sitemap.xml not found

Scan details

Requested URL: https://uni-due.de
Final URL: https://www.uni-due.de/
HTTP status: 200
HTTP version: HTTP/1.1
Response time: 499 ms
HTML size: 71.2 KB
Redirect chain: https://uni-due.de → https://www.uni-due.de/

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Frequently asked questions

What technology does uni-due.de use?: uni-due.de is built with PHP, jQuery, Apache.
Is uni-due.de secure (HTTPS)?: Yes. uni-due.de uses TLS 1.2 with a certificate issued by Hellenic Academic and Research Institutions CA, valid until Nov 14, 2026.
Who hosts uni-due.de?: Hosting provider information for uni-due.de is not available yet.
What is uni-due.de's SEO score?: uni-due.de scored 55/100 for SEO in the latest analysis (fair).
What is uni-due.de's overall website score?: uni-due.de has an overall SiteGraph score of 83/100, combining SEO, performance, security, and accessibility.
Has uni-due.de's score changed over time?: uni-due.de's overall score has stayed steady at 83/100 since Jul 25, 2026.