What technology does duesseldorf.de use?

We did not detect any specific technologies for duesseldorf.de in the latest scan.

Is duesseldorf.de secure (HTTPS)?

Yes. duesseldorf.de uses TLS 1.3 with a certificate issued by Deutsche Telekom Security GmbH, valid until Feb 21, 2027.

Who hosts duesseldorf.de?

Hosting provider information for duesseldorf.de is not available yet.

What is duesseldorf.de's SEO score?

duesseldorf.de scored 70/100 for SEO in the latest analysis (fair).

What is duesseldorf.de's overall website score?

duesseldorf.de has an overall SiteGraph score of 85/100, combining SEO, performance, security, and accessibility.

duesseldorf.de

Startseite - Landeshauptstadt Düsseldorf

Last scanned Jul 26, 2026, 5:17 AM · 1 view

Overall score

Great

Summary

Offizielles Stadtportal der Landeshauptstadt Düsseldorf. SEO is fair (70/100) and accessibility is excellent (100/100). Security scores excellent (100/100) and performance good (75/100). Top issue: Meta description longer than 160 characters.

Offizielles Stadtportal der Landeshauptstadt Düsseldorf. Mit Angeboten aus den Bereichen Aktuelles, Lebenssituationen, Rathaus Online, Tourismus, Kunst, Kultur, ...

Top issues to fix

6 issues found

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.
Meta description longer than 160 characters
SEO
Trim the meta description to under 160 characters to avoid truncation in search results.
Multiple H1 headings found
SEO
Keep a single H1 per page and demote the others to H2/H3.
No structured data (JSON-LD) found
SEO
Add JSON-LD (Organization, Article, Product…) to become eligible for rich results.
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.

SEO

5 issue(s) found

Performance

2.44 s

100

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.

Offizielles Stadtportal der Landeshauptstadt Düsseldorf. Mit Angeboten aus den Bereichen Aktuelles, Lebenssituationen, Rathaus Online, Tourismus, Kunst, Kultur, ...

YouTube Facebook X (Twitter)YouTube Facebook X (Twitter)

Contact

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

Phone: 0211-8991

Meta tags

Title: Startseite - Landeshauptstadt Düsseldorf
Description: Offizielles Stadtportal der Landeshauptstadt Düsseldorf. Mit Angeboten aus den Bereichen Aktuelles, Lebenssituationen, Rathaus Online, Tourismus, Kunst, Kultur, ...
Canonical: https://www.duesseldorf.de/
Language: de
Charset: utf-8
Viewport: width=device-width, initial-scale=1
Robots meta: index,follow
Manifest

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: Deutsche Telekom Security GmbH
Subject: *.duesseldorf.de
Valid from: Feb 17, 2026
Valid to: Feb 21, 2027
Days until expiry: 210
SAN domains: *.duesseldorf.de, duesseldorf.de

Security headers

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

Compression: gzip · 2 cookie(s) observed

Content & assets

Headings

H1 9 · H2 5 · H3 1

Links

103 internal · 27 external · 0 broken

Images

36 total · 0 missing alt

Scripts / Styles

13 scripts · 1 stylesheets

JS / CSS size

2.4 MB · 0 B

Page size

83.5 KB

Robots.txt & Sitemap

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

SEO issues

Meta description longer than 160 characters
Multiple H1 headings found
No structured data (JSON-LD) found
robots.txt not found
sitemap.xml not found

Scan details

Requested URL: https://duesseldorf.de
Final URL: https://www.duesseldorf.de/
HTTP status: 200
HTTP version: HTTP/1.1
Response time: 2.44 s
HTML size: 83.5 KB
Redirect chain: https://duesseldorf.de → https://www.duesseldorf.de/

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Frequently asked questions

What technology does duesseldorf.de use?: We did not detect any specific technologies for duesseldorf.de in the latest scan.
Is duesseldorf.de secure (HTTPS)?: Yes. duesseldorf.de uses TLS 1.3 with a certificate issued by Deutsche Telekom Security GmbH, valid until Feb 21, 2027.
Who hosts duesseldorf.de?: Hosting provider information for duesseldorf.de is not available yet.
What is duesseldorf.de's SEO score?: duesseldorf.de scored 70/100 for SEO in the latest analysis (fair).
What is duesseldorf.de's overall website score?: duesseldorf.de has an overall SiteGraph score of 85/100, combining SEO, performance, security, and accessibility.