ptb.de
Physikalisch-Technische Bundesanstalt
Last scanned Jul 25, 2026, 6:25 PM · 2 views
Overall score
Great
Summary
Die Physikalisch-Technische Bundesanstalt (PTB), Braunschweig und Berlin, ist das nationale Metrologie-Institut mit wissenschaftlich-technischen Dienstleistungsaufgaben. This website uses jQuery hosted on DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE. SEO is fair (65/100) and accessibility is excellent (90/100). Security scores excellent (90/100) and performance excellent (100/100). Top issue: Meta description longer than 160 characters.
Die Physikalisch-Technische Bundesanstalt (PTB), Braunschweig und Berlin, ist das nationale Metrologie-Institut mit wissenschaftlich-technischen Dienstleistungsaufgaben. Sie misst mit höchster Genauigkeit und Zuverlässigkeit – Metrologie als Kernkompetenz.
- Germany
- Hosted on DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE
Top issues to fix
6 issues found · 2 high priority
Missing Content-Security-Policy header
SecurityAdd a CSP to control which sources can run scripts — the strongest single defense against XSS.
No H1 heading found
SEOAdd 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
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.
Missing OpenGraph tags
SEOAdd og:title/og:description/og:image so shared links render a proper preview card.
sitemap.xml not found
SEOPublish an XML sitemap and reference it from robots.txt to speed up page discovery.
SEO
5 issue(s) found
Performance
834 ms
Security
HTTPS & header checks
Accessibility
1 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
- Physikalisch-Technische Bundesanstalt
- Description
- Die Physikalisch-Technische Bundesanstalt (PTB), Braunschweig und Berlin, ist das nationale Metrologie-Institut mit wissenschaftlich-technischen Dienstleistungsaufgaben. Sie misst mit höchster Genauigkeit und Zuverlässigkeit – Metrologie als Kernkompetenz.
- Canonical
- https://www.ptb.de/cms/cms/
- Language
- de-DE
- Charset
- utf-8
- Viewport
- width=device-width, initial-scale=1
- Robots meta
- index,follow
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- CDN provider
- —
- IP address
- 192.53.103.121
- ASN
- AS680 (DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE)
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA |
|
| MX | — |
| TXT | — |
| NS | — |
| CAA | — |
| CNAME |
|
| IPv6 support | Yes |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- Let's Encrypt
- Subject
- ptb.de
- Valid from
- Jul 20, 2026
- Valid to
- Oct 18, 2026
- Days until expiry
- 84
- SAN domains
- ptb.berlin, ptb.de, ptb.eu, ptb.info, www.ptb.berlin, www.ptb.de, www.ptb.eu, www.ptb.info
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyMissing
- X-Frame-OptionsEnabled
- X-Content-Type-OptionsEnabled
- Referrer-PolicyEnabled
- Permissions-PolicyMissing
Compression: gzip · 0 cookie(s) observed
Content & assets
Headings
H1 0 · H2 18 · H3 48
Links
244 internal · 7 external · 0 broken
Images
31 total · 0 missing alt
Scripts / Styles
23 scripts · 10 stylesheets
JS / CSS size
189 KB · 94.4 KB
Page size
143 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 53
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- Meta description longer than 160 characters
- No H1 heading found
- No structured data (JSON-LD) found
- Missing OpenGraph tags
- sitemap.xml not found
Accessibility issues
- No H1 heading found
Careers
This company has an active careers page, but individual openings weren't reliably parsed from it — visit the page above for current listings.
Scan details
- Requested URL
- https://ptb.de
- Final URL
- https://www.ptb.de/cms/
- HTTP status
- 200
- HTTP version
- HTTP/1.1
- Response time
- 832 ms
- HTML size
- 143 KB
- Redirect chain
- https://ptb.de → https://www.ptb.de/ → https://www.ptb.de/cms/
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does ptb.de use?
- ptb.de is built with jQuery.
- Is ptb.de secure (HTTPS)?
- Yes. ptb.de uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Oct 18, 2026.
- Who hosts ptb.de?
- ptb.de is hosted on DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE.
- What is ptb.de's SEO score?
- ptb.de scored 65/100 for SEO in the latest analysis (fair).
- What is ptb.de's overall website score?
- ptb.de has an overall SiteGraph score of 85/100, combining SEO, performance, security, and accessibility.
- Is ptb.de hiring?
- ptb.de has a careers page; check it directly for current openings.
OpenGraph & Twitter Card
OpenGraph
Twitter Card