What technology does kassel.de use?

kassel.de is built with Apache.

Is kassel.de secure (HTTPS)?

Yes. kassel.de uses TLS 1.3 with a certificate issued by DigiCert Inc, valid until Dec 6, 2026.

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

What is kassel.de's SEO score?

kassel.de scored 80/100 for SEO in the latest analysis (great).

What is kassel.de's overall website score?

kassel.de has an overall SiteGraph score of 94/100, combining SEO, performance, security, and accessibility.

kassel.de

Startseite | Stadt Kassel

Last scanned Jul 26, 2026, 4:17 PM · 1 view

Overall score

Excellent

Summary

Offizieller Internetauftritt der documenta-Stadt Kassel mit vielen Infos, Angeboten, Online Services, Highlights und großem Veranstaltungskalender. This website uses Apache. SEO is good (80/100) and accessibility is excellent (100/100). Security scores excellent (100/100) and performance excellent (100/100). Top issue: Meta description longer than 160 characters.

Offizieller Internetauftritt der documenta-Stadt Kassel mit vielen Infos, Angeboten, Online Services, Highlights und großem Veranstaltungskalender. Das Portal für die Bürgerinnen und Bürger sowie alle Gäste der Nordhessen-Metropole an der Fulda.

Top issues to fix

5 issues found

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.
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.
20 broken links on the page
SEO
Fix or remove broken links — they waste crawl budget and erode user trust.

SEO

4 issue(s) found

100

Performance

388 ms

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.

Facebook X (Twitter)X (Twitter)Instagram YouTube

Meta tags

Title: Startseite | Stadt Kassel
Description: Offizieller Internetauftritt der documenta-Stadt Kassel mit vielen Infos, Angeboten, Online Services, Highlights und großem Veranstaltungskalender. Das Portal für die Bürgerinnen und Bürger sowie alle Gäste der Nordhessen-Metropole an der Fulda.
Canonical: https://www.kassel.de/index.php
Language: de-DE
Charset: UTF-8
Viewport: width=device-width, initial-scale=1, minimum-scale=1, user-scalable=yes
Robots meta
Manifest: https://www.kassel.de/manifest.webmanifest

Technologies

Detected frameworks, languages, and tools.

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 1.3
Issuer: DigiCert Inc
Subject: *.kassel.de
Valid from: Nov 5, 2025
Valid to: Dec 6, 2026
Days until expiry: 130
SAN domains: *.kassel.de, kassel.de

Security headers

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

Compression: gzip · 1 cookie(s) observed

Content & assets

Headings

H1 2 · H2 6 · H3 45

Links

82 internal · 42 external · 20 broken

Images

11 total · 0 missing alt

Scripts / Styles

14 scripts · 4 stylesheets

JS / CSS size

3.3 KB · 0 B

Page size

149 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
robots.txt not found
sitemap.xml not found

Scan details

Requested URL: https://kassel.de
Final URL: https://www.kassel.de/
HTTP status: 200
HTTP version: HTTP/1.1
Response time: 385 ms
HTML size: 149 KB
Redirect chain: https://kassel.de → https://www.kassel.de/

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does kassel.de use?: kassel.de is built with Apache.
Is kassel.de secure (HTTPS)?: Yes. kassel.de uses TLS 1.3 with a certificate issued by DigiCert Inc, valid until Dec 6, 2026.
Who hosts kassel.de?: Hosting provider information for kassel.de is not available yet.
What is kassel.de's SEO score?: kassel.de scored 80/100 for SEO in the latest analysis (great).
What is kassel.de's overall website score?: kassel.de has an overall SiteGraph score of 94/100, combining SEO, performance, security, and accessibility.