psi.ch
Paul Scherrer Institut PSI
Last scanned Aug 3, 2026, 3:00 AM · 12 views
Overall score
Great
Summary
Das Paul Scherrer Institut PSI ist das grösste Forschungszentrum für Natur- und Ingenieurwissenschaften in der Schweiz. This website uses Drupal behind Fastly CDN. SEO is good (75/100) and accessibility is excellent (100/100). Security scores excellent (90/100) and performance excellent (90/100). Top issue: Meta description longer than 160 characters.
Das Paul Scherrer Institut PSI ist das grösste Forschungszentrum für Natur- und Ingenieurwissenschaften in der Schweiz. Wir betreiben Spitzenforschung in den Bereichen Materie und Material, Mensch und Gesundheit sowie Energie und Umwelt. Durch Grundlagen- und angewandte Forschung arbeiten wir an nachhaltigen Lösungen für zentrale Fragen aus Gesellschaft, Wirtschaft und Wissenschaft.
Top issues to fix
6 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.
Meta description longer than 160 characters
SEOTrim the meta description to under 160 characters to avoid truncation in search results.
No structured data (JSON-LD) found
SEOAdd JSON-LD (Organization, Article, Product…) to become eligible for rich results.
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.
20 broken links on the page
SEOFix or remove broken links — they waste crawl budget and erode user trust.
SEO
4 issue(s) found
Performance
296 ms
Security
HTTPS & header checks
Accessibility
0 issue(s) found
Score history
+5 overall since Jul 26, 2026
- Overall
- 88
- SEO
- 75
- Security
- 90
- Performance
- 90
- Accessibility
- 100
Organization
Company details published in this site's own structured data.
Das Paul Scherrer Institut PSI ist das grösste Forschungszentrum für Natur- und Ingenieurwissenschaften in der Schweiz. Wir betreiben Spitzenforschung in den Bereichen Materie und Material, Mensch und Gesundheit sowie Energie und Umwelt. Durch Grundlagen- und angewandte Forschung arbeiten wir an nachhaltigen Lösungen für zentrale Fragen aus Gesellschaft, Wirtschaft und Wissenschaft.
Contact
Email, phone, and address published on this site's own pages.
Meta tags
- Title
- Paul Scherrer Institut PSI
- Description
- Das Paul Scherrer Institut PSI ist das grösste Forschungszentrum für Natur- und Ingenieurwissenschaften in der Schweiz. Wir betreiben Spitzenforschung in den Bereichen Materie und Material, Mensch und Gesundheit sowie Energie und Umwelt. Durch Grundlagen- und angewandte Forschung arbeiten wir an nachhaltigen Lösungen für zentrale Fragen aus Gesellschaft, Wirtschaft und Wissenschaft.
- Canonical
- https://www.psi.ch/de
- Language
- de
- Charset
- utf-8
- Viewport
- width=device-width, initial-scale=1.0, shrink-to-fit=no
- Robots meta
- 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
- DigiCert Inc
- Subject
- www.psi.ch
- Valid from
- Apr 24, 2026
- Valid to
- Nov 8, 2026
- Days until expiry
- 97
- SAN domains
- www.psi.ch
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyMissing
- X-Frame-OptionsEnabled
- X-Content-Type-OptionsEnabled
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: gzip · 0 cookie(s) observed
Content & assets
Headings
H1 1 · H2 22 · H3 22
Links
268 internal · 39 external · 20 broken
Images
47 total · 0 missing alt
Scripts / Styles
3 scripts · 4 stylesheets
JS / CSS size
9.9 KB · 0 B
Page size
309 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
- No structured data (JSON-LD) found
- robots.txt not found
- sitemap.xml not found
Accessibility issues
No accessibility issues detected.
Scan details
- Requested URL
- https://psi.ch
- Final URL
- https://www.psi.ch/de
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 290 ms
- HTML size
- 309 KB
- Redirect chain
- https://psi.ch → https://www.psi.ch/ → https://www.psi.ch/de
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does psi.ch use?
- psi.ch is built with Drupal.
- Is psi.ch secure (HTTPS)?
- Yes. psi.ch uses TLS 1.3 with a certificate issued by DigiCert Inc, valid until Nov 8, 2026.
- Who hosts psi.ch?
- Hosting provider information for psi.ch is not available yet.
- What is psi.ch's SEO score?
- psi.ch scored 75/100 for SEO in the latest analysis (fair).
- What is psi.ch's overall website score?
- psi.ch has an overall SiteGraph score of 88/100, combining SEO, performance, security, and accessibility.
- Has psi.ch's score changed over time?
- psi.ch's overall score has improved by 5 points (from 83 to 88) since Jul 26, 2026.
OpenGraph & Twitter Card
OpenGraph
Twitter Card