Is gsi.de secure (HTTPS)?

Yes. gsi.de uses TLS 1.2 with a certificate issued by Hellenic Academic and Research Institutions CA, valid until Sep 12, 2026.

Hosting provider information for gsi.de is not available yet.

What is gsi.de's SEO score?

gsi.de scored 75/100 for SEO in the latest analysis (fair).

What is gsi.de's overall website score?

gsi.de has an overall SiteGraph score of 83/100, combining SEO, performance, security, and accessibility.

gsi.de

GSI - Aktuelles

Last scanned Jul 26, 2026, 5:17 AM

Overall score

Great

Summary

This website uses Apache. SEO is good (75/100) and accessibility is excellent (100/100). Security scores fair (70/100) and performance excellent (90/100). Top issue: Missing meta description.

Top issues to fix

6 issues found · 3 high priority

Missing Strict-Transport-Security header
Security
Add HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.
Missing Content-Security-Policy header
Security
Add a CSP to control which sources can run scripts — the strongest single defense against XSS.
Missing meta description
SEO
Add a ~150-character meta description to control your search-result snippet and lift click-through rate.
Missing X-Frame-Options header
Security
Add X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.
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.

SEO

3 issue(s) found

Performance

2.02 s

Security

HTTPS & header checks

100

Accessibility

0 issue(s) found

Not enough scan history yet to show a trend — check back after this site has been re-scanned a few more times.

Organization

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

Instagram LinkedIn YouTube Facebook YouTube

Technologies

Detected frameworks, languages, and tools.

Apache

Hosting & CDN

Hosting provider: —
CDN provider: —
IP address: 140.181.3.149
ASN: —

DNS records

Type	Value
A	140.181.3.149
AAAA	—
MX	—
TXT	—
NS	—
CAA	—
CNAME	—
IPv6 support	No

TLS / SSL certificate

Version: TLS 1.2
Issuer: Hellenic Academic and Research Institutions CA
Subject: www.gsi.de
Valid from: Sep 12, 2025
Valid to: Sep 12, 2026
Days until expiry: 48
SAN domains: www.gsi.de, appa-rd.fair-center.eu, www.fair-center.com, www.fair-center.de, www.universum-im-labor.de, cbm.fair-center.de, fp7.fair-center.eu, nustar.fair-center.de, fair-center.com, laspec.fair-center.de, www.fair-center.net, www.fair-center.eu, mats.fair-center.de, fair-center.de, universum-im-labor.de, universe-in-the-lab.org, gsi.de, nustar.fair-center.eu, fair-center.net, fsp-appa.fair-center.eu, www.fair-center.org, fair-center.org, cbm.fair-center.eu, ecard.gsi.de, mats.fair-center.eu, fair-center.eu, laspec.fair-center.eu, www.universe-in-the-lab.org

Security headers

Strict-Transport-SecurityMissing
Content-Security-PolicyMissing
X-Frame-OptionsMissing
X-Content-Type-OptionsEnabled
Referrer-PolicyMissing
Permissions-PolicyMissing

Compression: gzip · 0 cookie(s) observed

Content & assets

Headings

H1 7 · H2 3 · H3 0

Links

74 internal · 23 external · 0 broken

Images

20 total · 0 missing alt

Scripts / Styles

10 scripts · 3 stylesheets

JS / CSS size

645 KB · 246 KB

Page size

37.6 KB

Robots.txt & Sitemap

robots.txt: Found
Disallow rules: 1
sitemap.xml: Found
URLs in sitemap: -1

SEO issues

Missing meta description
Multiple H1 headings found
No structured data (JSON-LD) found

Scan details

Requested URL: https://gsi.de
Final URL: https://www.gsi.de/start/aktuelles
HTTP status: 200
HTTP version: HTTP/1.1
Response time: 2.02 s
HTML size: 37.6 KB
Redirect chain: https://gsi.de → https://www.gsi.de/ → https://www.gsi.de/start/aktuelles

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Frequently asked questions

What technology does gsi.de use?: gsi.de is built with Apache.
Is gsi.de secure (HTTPS)?: Yes. gsi.de uses TLS 1.2 with a certificate issued by Hellenic Academic and Research Institutions CA, valid until Sep 12, 2026.
Who hosts gsi.de?: Hosting provider information for gsi.de is not available yet.
What is gsi.de's SEO score?: gsi.de scored 75/100 for SEO in the latest analysis (fair).
What is gsi.de's overall website score?: gsi.de has an overall SiteGraph score of 83/100, combining SEO, performance, security, and accessibility.