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.

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.

Has zib.de's score changed over time?

zib.de's overall score has stayed steady at 84/100 since Jul 26, 2026.

zib.de

Home | zib.de

Last scanned Aug 5, 2026, 9:00 PM · 21 views

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
SEO
Add a ~150-character meta description to control your search-result snippet and lift click-through rate.
Missing canonical link
SEO
Add <link rel="canonical"> so search engines know which URL variant to index.
Multiple H1 headings found
SEO
Keep a single H1 per page and demote the others to H2/H3.
No structured data (JSON-LD) found
SEO
Add JSON-LD (Organization, Article, Product…) to become eligible for rich results.
Missing OpenGraph tags
SEO
Add og:title/og:description/og:image so shared links render a proper preview card.
robots.txt not found
SEO
Publish /robots.txt with a Sitemap: directive to guide crawlers.

+3 more issues — details in the sections below.

SEO

7 issue(s) found

100

Performance

279 ms

100

Security

HTTPS & header checks

Accessibility

1 issue(s) found

Score history

0 overall since Jul 26, 2026

Overall: 84
SEO: 55
Security: 100
Performance: 100
Accessibility: 85

Organization

Company details published in this site's own structured data.

Instagram YouTube X (Twitter)

Technologies

Detected frameworks, languages, and tools.

Drupal

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: 185
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 1 · H3 20

Links

68 internal · 5 external · 2 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

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

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