uni-heidelberg.de
Heidelberg University
Last scanned Jul 21, 2026, 11:40 AM · 1 view
Overall score
Great
Top issues to fix
4 issues found · 1 high priority
Missing Content-Security-Policy header
SecurityAdd a CSP to control which sources can run scripts — the strongest single defense against XSS.
Missing X-Content-Type-Options header
SecurityAdd X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
Multiple H1 headings found
SEOKeep a single H1 per page and demote the others to H2/H3.
Missing OpenGraph tags
SEOAdd og:title/og:description/og:image so shared links render a proper preview card.
Summary
. This website uses Express hosted on BELWUE - Universitaet Stuttgart, DE behind Fastly CDN. SEO is excellent (90/100) and accessibility is excellent (100/100). Security scores good (85/100) and performance fair (70/100). Top issue: Multiple H1 headings found.
SEO
2 issue(s) found
Performance
675 ms
Security
HTTPS & header checks
Accessibility
0 issue(s) found
Organization
Company details published in this site's own structured data.
Contact
Email, phone, and address published on this site's own pages.
Meta tags
- Title
- Heidelberg University
- Description
-
- Canonical
- https://www.uni-heidelberg.de/en
- Language
- en
- Charset
- UTF-8
- Viewport
- width=device-width
- Robots meta
- index, follow, max-image-preview:large
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- BELWUE - Universitaet Stuttgart, DE
- CDN provider
- Fastly
- IP address
- 129.206.13.71
- ASN
- AS553 (BELWUE - Universitaet Stuttgart, DE)
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
- *.ocp-west.urz.uni-heidelberg.de
- Valid from
- Dec 12, 2025
- Valid to
- Dec 12, 2026
- Days until expiry
- 144
- SAN domains
- *.ocp-west.urz.uni-heidelberg.de, ocp-west.urz.uni-heidelberg.de, ub.uni-heidelberg.de, echo-wall.info, www.hse-heidelberg.de, www.urz.uni-heidelberg.de, *.ocp-nord.urz.uni-heidelberg.de, ocp-nord.urz.uni-heidelberg.de, e-science-tage.de, heiarchive.uni-heidelberg.de, trr186.de, www.heiarchive.uni-heidelberg.de, backend.urz.uni-heidelberg.de, uni-heidelberg.de, *.apps.ocp-ost.urz.uni-heidelberg.de, apps.ocp-ost.urz.uni-heidelberg.de, www.e-science-tage.de, echo-wall.de, echo-wall.org, hse-heidelberg.de, echo-wall.eu, www.trr186.uni-heidelberg.de, heimap.uni-heidelberg.de, foerderverein.hadw-bw.de, backend-484.uni-heidelberg.de, eventcalendar.urz.uni-heidelberg.de, www.echo-wall.info, trr186.uni-heidelberg.de, www.cert.uni-heidelberg.de, cert.uni-heidelberg.de, backend.uni-heidelberg.de, www.ub.uni-heidelberg.de, *.apps.ocp-nord.urz.uni-heidelberg.de, apps.ocp-nord.urz.uni-heidelberg.de, www.foerderverein.hadw-bw.de, hadw-bw.de, www.sites.uni-heidelberg.de, www.echo-wall.de, sites.uni-heidelberg.de, urz.uni-heidelberg.de, echo-wall.net, www.trr186.de, feust.jura.uni-heidelberg.de, www.echo-wall.net, *.apps.ocp-west.urz.uni-heidelberg.de, apps.ocp-west.urz.uni-heidelberg.de, heika-research.de, www.echo-wall.eu, backend.sites.uni-heidelberg.de, www.uni-heidelberg.de, backend.ub.uni-heidelberg.de, www.heika-research.de, *.ocp-ost.urz.uni-heidelberg.de, ocp-ost.urz.uni-heidelberg.de, www.hadw-bw.de, www.echo-wall.org, heimap-dev.urz.uni-heidelberg.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 4 · H2 11 · H3 18
Links
57 internal · 16 external · 0 broken
Images
22 total · 0 missing alt
Scripts / Styles
4 scripts · 1 stylesheets
JS / CSS size
3.4 MB · 199 KB
Page size
286 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 22
- sitemap.xml
- Found
- URLs in sitemap
- -1
SEO issues
- Multiple H1 headings found
- Missing OpenGraph tags
Accessibility issues
No accessibility issues detected.
Scan details
- Requested URL
- https://uni-heidelberg.de
- Final URL
- https://www.uni-heidelberg.de/en
- HTTP status
- 200
- HTTP version
- HTTP/1.1
- Response time
- 670 ms
- HTML size
- 286 KB
- Redirect chain
- https://uni-heidelberg.de → https://www.uni-heidelberg.de/ → https://www.uni-heidelberg.de/en
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Frequently asked questions
- What technology does uni-heidelberg.de use?
- uni-heidelberg.de is built with Express, Node.js, Drupal, Nginx.
- Is uni-heidelberg.de secure (HTTPS)?
- Yes. uni-heidelberg.de uses TLS 1.3 with a certificate issued by Hellenic Academic and Research Institutions CA, valid until Dec 12, 2026.
- Who hosts uni-heidelberg.de?
- uni-heidelberg.de is hosted on BELWUE - Universitaet Stuttgart, DE, behind Fastly CDN.
- What is uni-heidelberg.de's SEO score?
- uni-heidelberg.de scored 90/100 for SEO in the latest analysis (excellent).
- What is uni-heidelberg.de's overall website score?
- uni-heidelberg.de has an overall SiteGraph score of 86/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card