uni-heidelberg.de
Heidelberg University - Zukunft seit 1386
Last scanned Jul 29, 2026, 4:00 PM · 15 views
Overall score
Great
Summary
. This website uses Express behind Fastly CDN. SEO is good (80/100) and accessibility is excellent (90/100). Security scores good (85/100) and performance excellent (100/100). Top issue: Multiple H1 headings found.
Top issues to fix
8 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.
robots.txt not found
SEOPublish /robots.txt with a Sitemap: directive to guide crawlers.
sitemap.xml not found
SEOPublish an XML sitemap and reference it from robots.txt to speed up page discovery.
+2 more issues — details in the sections below.
SEO
4 issue(s) found
Performance
417 ms
Security
HTTPS & header checks
Accessibility
1 issue(s) found
Score history
+2 overall since Jul 21, 2026
- Overall
- 88
- SEO
- 80
- Security
- 85
- Performance
- 100
- Accessibility
- 90
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 - Zukunft seit 1386
- Description
-
- Canonical
- https://www.uni-heidelberg.de/en
- Language
- 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
- —
- CDN provider
- Fastly
- 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
- *.ocp-west.urz.uni-heidelberg.de
- Valid from
- Dec 12, 2025
- Valid to
- Dec 12, 2026
- Days until expiry
- 135
- 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 10 · H3 14
Links
53 internal · 14 external · 20 broken
Images
15 total · 0 missing alt
Scripts / Styles
2 scripts · 1 stylesheets
JS / CSS size
211 KB · 0 B
Page size
268 KB
Robots.txt & Sitemap
- robots.txt
- Not found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- Multiple H1 headings found
- Missing OpenGraph tags
- robots.txt not found
- sitemap.xml not found
Accessibility issues
- Missing <html lang> attribute
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
- 412 ms
- HTML size
- 268 KB
- Redirect chain
- https://uni-heidelberg.de → https://www.uni-heidelberg.de/ → https://www.uni-heidelberg.de/en
See something wrong on this report? Request a correction
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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?
- Hosting provider information for uni-heidelberg.de is not available yet.
- What is uni-heidelberg.de's SEO score?
- uni-heidelberg.de scored 80/100 for SEO in the latest analysis (great).
- What is uni-heidelberg.de's overall website score?
- uni-heidelberg.de has an overall SiteGraph score of 88/100, combining SEO, performance, security, and accessibility.
- Has uni-heidelberg.de's score changed over time?
- uni-heidelberg.de's overall score has improved by 2 points (from 86 to 88) since Jul 21, 2026.
OpenGraph & Twitter Card
OpenGraph
Twitter Card