zib.de
Home | zib.de
Last scanned Jul 26, 2026, 5:47 AM
Overall score
Great
Summary
This website uses Drupal. SEO is fair (55/100) and accessibility is good (85/100). Security scores excellent (100/100) and performance excellent (100/100). Top issue: Missing meta description.
Top issues to fix
9 issues found · 1 high priority
Missing meta description
SEOAdd a ~150-character meta description to control your search-result snippet and lift click-through rate.
Missing canonical link
SEOAdd <link rel="canonical"> so search engines know which URL variant to index.
Multiple H1 headings found
SEOKeep a single H1 per page and demote the others to H2/H3.
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.
robots.txt not found
SEOPublish /robots.txt with a Sitemap: directive to guide crawlers.
+3 more issues — details in the sections below.
SEO
7 issue(s) found
Performance
279 ms
Security
HTTPS & header checks
Accessibility
1 issue(s) found
Organization
Company details published in this site's own structured data.
Meta tags
- Title
- Home | zib.de
- Description
- Canonical
- Language
- en
- Charset
- utf-8
- Viewport
- width=device-width, initial-scale=1.0
- Robots meta
- Manifest
Technologies
Detected frameworks, languages, and tools.
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
- www.zib.de
- Valid from
- Jul 23, 2026
- Valid to
- Feb 7, 2027
- Days until expiry
- 193
- SAN domains
- www.zib.de, zib.de
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyEnabled
- X-Frame-OptionsEnabled
- X-Content-Type-OptionsEnabled
- Referrer-PolicyEnabled
- Permissions-PolicyEnabled
Compression: gzip · 0 cookie(s) observed
Content & assets
Headings
H1 11 · H2 0 · H3 20
Links
68 internal · 5 external · 20 broken
Images
27 total · 12 missing alt
Scripts / Styles
2 scripts · 2 stylesheets
JS / CSS size
6.8 KB · 469 B
Page size
58.1 KB
Robots.txt & Sitemap
- robots.txt
- Not found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- Missing meta description
- Missing canonical link
- Multiple H1 headings found
- No structured data (JSON-LD) found
- Missing OpenGraph tags
- robots.txt not found
- sitemap.xml not found
Accessibility issues
- More than 20% of images are missing alt text
Scan details
- Requested URL
- https://zib.de
- Final URL
- https://zib.de
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 278 ms
- HTML size
- 58.1 KB
- Redirect chain
- https://zib.de
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does zib.de use?
- zib.de is built with Drupal.
- Is zib.de secure (HTTPS)?
- Yes. zib.de uses TLS 1.3 with a certificate issued by Hellenic Academic and Research Institutions CA, valid until Feb 7, 2027.
- Who hosts zib.de?
- Hosting provider information for zib.de is not available yet.
- What is zib.de's SEO score?
- zib.de scored 55/100 for SEO in the latest analysis (fair).
- What is zib.de's overall website score?
- zib.de has an overall SiteGraph score of 84/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card