What technology does hereon.de use?

hereon.de is built with Apache.

Is hereon.de secure (HTTPS)?

Yes. hereon.de uses TLS 1.3 with a certificate issued by Hellenic Academic and Research Institutions CA, valid until Feb 6, 2027.

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

What is hereon.de's SEO score?

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

What is hereon.de's overall website score?

hereon.de has an overall SiteGraph score of 91/100, combining SEO, performance, security, and accessibility.

hereon.de

Helmholtz-Zentrum Hereon - Spitzenforschung für eine Welt im Wandel

Last scanned Aug 24, 2026, 1:22 PM · 2 views

Overall score

Excellent

Summary

Helmholtz-Zentrum Hereon, Großforschungszentrum der Helmholtz-Gemeinschaft mit Hauptsitz in Geesthacht. This website uses Apache. SEO is fair (70/100) and accessibility is excellent (100/100). Security scores excellent (100/100) and performance excellent (100/100). Top issue: Title longer than 60 characters.

Helmholtz-Zentrum Hereon, Großforschungszentrum der Helmholtz-Gemeinschaft mit Hauptsitz in Geesthacht

Top issues to fix

6 issues found

Title longer than 60 characters
SEO
Shorten the title to under 60 characters so search results don't truncate it.
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.
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.
18 broken links on the page
SEO
Fix or remove broken links — they waste crawl budget and erode user trust.

SEO

5 issue(s) found

100

Performance

287 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.

Helmholtz-Zentrum Hereon, Großforschungszentrum der Helmholtz-Gemeinschaft mit Hauptsitz in Geesthacht

Meta tags

Title: Helmholtz-Zentrum Hereon - Spitzenforschung für eine Welt im Wandel
Description: Helmholtz-Zentrum Hereon, Großforschungszentrum der Helmholtz-Gemeinschaft mit Hauptsitz in Geesthacht
Canonical
Language: en
Charset: utf-8
Viewport: width=device-width, initial-scale=1.0
Robots meta: index,follow
Manifest

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: Hellenic Academic and Research Institutions CA
Subject: hereon.de
Valid from: Jul 22, 2026
Valid to: Feb 6, 2027
Days until expiry: 165
SAN domains: hereon.de, www.hereon.org, hereon.net, hereon.org, www.hereon.de, hereone.de, www.hzg.eu, www.hzg.de, gkss.info, www.hereon.eu, hzg.de, hereon.eu, hzg.org, hzg.eu

Security headers

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

Compression: gzip · 0 cookie(s) observed

Content & assets

Headings

H1 1 · H2 4 · H3 4

Links

710 internal · 10 external · 18 broken

Images

24 total · 0 missing alt

Scripts / Styles

6 scripts · 6 stylesheets

JS / CSS size

107 B · 0 B

Page size

233 KB

Robots.txt & Sitemap

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

SEO issues

Title longer than 60 characters
Missing canonical link
No structured data (JSON-LD) found
robots.txt not found
sitemap.xml not found

Scan details

Requested URL: https://hereon.de
Final URL: https://hereon.de
HTTP status: 200
HTTP version: HTTP/1.1
Response time: 283 ms
HTML size: 233 KB
Redirect chain: https://hereon.de

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Frequently asked questions

What technology does hereon.de use?: hereon.de is built with Apache.
Is hereon.de secure (HTTPS)?: Yes. hereon.de uses TLS 1.3 with a certificate issued by Hellenic Academic and Research Institutions CA, valid until Feb 6, 2027.
Who hosts hereon.de?: Hosting provider information for hereon.de is not available yet.
What is hereon.de's SEO score?: hereon.de scored 70/100 for SEO in the latest analysis (fair).
What is hereon.de's overall website score?: hereon.de has an overall SiteGraph score of 91/100, combining SEO, performance, security, and accessibility.