What technology does heidelberg.de use?

heidelberg.de is built with Bootstrap, jQuery, Apache.

Is heidelberg.de secure (HTTPS)?

Yes. heidelberg.de uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Sep 15, 2026.

Who hosts heidelberg.de?

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

What is heidelberg.de's SEO score?

heidelberg.de scored 55/100 for SEO in the latest analysis (fair).

What is heidelberg.de's overall website score?

heidelberg.de has an overall SiteGraph score of 82/100, combining SEO, performance, security, and accessibility.

heidelberg.de

Startseite | Heidelberg

Last scanned Jul 26, 2026, 12:19 PM

Overall score

Great

Summary

Die offizielle Website der Stadt Heidelberg und Ihr digitales Rathaus - vereinbaren Sie hier Online-Termine in den Bürgerämtern und erfahren Sie alles zu Verwaltung, Bürgerservice, Politik, Umwelt, Bildung und Kultur. This website uses Apache. SEO is fair (55/100) and accessibility is excellent (90/100). Security scores excellent (90/100) and performance excellent (100/100). Top issue: Meta description longer than 160 characters.

Top issues to fix

9 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.
No H1 heading found
SEO
Add exactly one H1 describing the page's main topic — it anchors the document outline for search engines and screen readers.
Meta description longer than 160 characters
SEO
Trim the meta description to under 160 characters to avoid truncation in search results.
Missing canonical link
SEO
Add <link rel="canonical"> so search engines know which URL variant to index.
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.

+3 more issues — details in the sections below.

SEO

7 issue(s) found

100

Performance

731 ms

Security

HTTPS & header checks

Accessibility

1 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.

YouTube Instagram X (Twitter)LinkedIn

Contact

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

Email: digitales@heidelberg.de stadt@heidelberg.de

Meta tags

Title: Startseite | Heidelberg
Description: Die offizielle Website der Stadt Heidelberg und Ihr digitales Rathaus - vereinbaren Sie hier Online-Termine in den Bürgerämtern und erfahren Sie alles zu Verwaltung, Bürgerservice, Politik, Umwelt, Bildung und Kultur. Im Newsbereich finden Sie aktuelle Themen, Termine und Veranstaltungen in Heidelberg
Canonical
Language: de
Charset: UTF-8
Viewport: width=device-width, initial-scale=1, maximum-scale=5, shrink-to-fit=no
Robots meta: index, follow
Manifest

Technologies

Detected frameworks, languages, and tools.

Bootstrap 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 1.3
Issuer: Let's Encrypt
Subject: heidelberg.de
Valid from: Jun 17, 2026
Valid to: Sep 15, 2026
Days until expiry: 48
SAN domains: cms7.heidelberg.eu, heidelberg.de, heidelberg.eu, stadt-heidelberg.com, stadt-heidelberg.net, www.heidelberg.de, www.heidelberg.eu, www.stadt-heidelberg.com, www.stadt-heidelberg.net

Security headers

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

Compression: none · 1 cookie(s) observed

Content & assets

Headings

H1 0 · H2 14 · H3 12

Links

284 internal · 31 external · 13 broken

Images

28 total · 1 missing alt

Scripts / Styles

25 scripts · 8 stylesheets

JS / CSS size

19.7 KB · 0 B

Page size

112 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
Missing canonical link
No H1 heading found
No structured data (JSON-LD) found
Missing OpenGraph tags
robots.txt not found
sitemap.xml not found

Scan details

Requested URL: https://heidelberg.de
Final URL: https://www.heidelberg.de/hd/HD.html
HTTP status: 200
HTTP version: HTTP/2
Response time: 729 ms
HTML size: 112 KB
Redirect chain: https://heidelberg.de → https://www.heidelberg.de/ → https://www.heidelberg.de/hd/HD.html

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does heidelberg.de use?: heidelberg.de is built with Bootstrap, jQuery, Apache.
Is heidelberg.de secure (HTTPS)?: Yes. heidelberg.de uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Sep 15, 2026.
Who hosts heidelberg.de?: Hosting provider information for heidelberg.de is not available yet.
What is heidelberg.de's SEO score?: heidelberg.de scored 55/100 for SEO in the latest analysis (fair).
What is heidelberg.de's overall website score?: heidelberg.de has an overall SiteGraph score of 82/100, combining SEO, performance, security, and accessibility.