Is gwdg.de secure (HTTPS)?

Yes. gwdg.de uses TLS 1.3 with a certificate issued by Hellenic Academic and Research Institutions CA, valid until Nov 7, 2026.

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

What is gwdg.de's SEO score?

gwdg.de scored 65/100 for SEO in the latest analysis (fair).

What is gwdg.de's overall website score?

gwdg.de has an overall SiteGraph score of 87/100, combining SEO, performance, security, and accessibility.

Has gwdg.de's score changed over time?

gwdg.de's overall score has declined by 2 points (from 89 to 87) since Jul 24, 2026.

gwdg.de

GWDG | GWDG - IT in der Wissenschaft

Last scanned Aug 1, 2026, 12:00 AM · 9 views

Overall score

Great

Summary

This website uses Apache. SEO is fair (65/100) and accessibility is excellent (100/100). Security scores excellent (90/100) and performance excellent (100/100). Top issue: Missing meta description.

Top issues to fix

7 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 X-Frame-Options header
Security
Add X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.
Missing canonical link
SEO
Add <link rel="canonical"> so search engines know which URL variant to index.
No structured data (JSON-LD) found
SEO
Add JSON-LD (Organization, Article, Product…) to become eligible for rich results.
robots.txt not found
SEO
Publish /robots.txt with a Sitemap: directive to guide crawlers.
sitemap.xml not found
SEO
Publish an XML sitemap and reference it from robots.txt to speed up page discovery.

+1 more issue — details in the sections below.

SEO

5 issue(s) found

100

Performance

128 ms

Security

HTTPS & header checks

100

Accessibility

0 issue(s) found

Score history

-2 overall since Jul 24, 2026

Overall: 87
SEO: 65
Security: 90
Performance: 100
Accessibility: 100

Organization

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

LinkedIn YouTube Instagram Facebook

Contact

Email, phone, and address published on this site's own pages.

Email: support@gwdg.de

Technologies

Detected frameworks, languages, and tools.

Apache

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: gwdg.de
Valid from: Nov 7, 2025
Valid to: Nov 7, 2026
Days until expiry: 98
SAN domains: gwdg.de, passwort.gwdg.de, faq.gwdg.de, antivir.gwdg.de, www.gwdg.eu, www-portal.gwdg.de, xn--gttinger-rechenzentrum-uhc.de, cdn.gwdg.de, sicherheit.gwdg.de, gwdg.science, goettinger-rechenzentrum.de, hpc-neu.gwdg.de, it-sicherheit.gwdg.de, it-security.gwdg.de, museum.gwdg.de, nhr.gwdg.de, info.gwdg.de, www.gwdg.info, www.gwdg.science, gwdg.info, security.gwdg.de, www.museum.gwdg.de, www.gwdg.de, password.gwdg.de, hpc.gwdg.de, mac.gwdg.de, gwdg.eu

Security headers

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

Compression: gzip · 0 cookie(s) observed

Content & assets

Headings

H1 1 · H2 8 · H3 1

Links

44 internal · 17 external · 20 broken

Images

12 total · 0 missing alt

Scripts / Styles

1 scripts · 1 stylesheets

JS / CSS size

0 B · 0 B

Page size

16.7 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
No structured data (JSON-LD) found
robots.txt not found
sitemap.xml not found

Scan details

Requested URL: https://gwdg.de
Final URL: https://gwdg.de
HTTP status: 200
HTTP version: HTTP/2
Response time: 128 ms
HTML size: 16.7 KB
Redirect chain: https://gwdg.de

See something wrong on this report? Request a correction

Same technology stack

gopay.com

Payment gateway that helps you earn more | GoPay

100

apachegoogle-analyticsphp

AWS

clubhouseinn.com

Welcome To ClubHouse | ClubHouse Hotel & Suites

100

apachegoogle-analytics

AWS· CloudFront

buderus.com

Buderus - the system expert for HVAC

100

apachejquery

VODANET - Vodafone GmbH, DE

dorkhost.com

DorkHost Networks | Boutique Cloud Hosting

100

apache

VOXILITY - Voxility LLP, GB

boschtt.net

Home | Bosch Home Comfort Group

100

apachejquery

VODANET - Vodafone GmbH, DE

hovbi.com

Hovbi Trends — Discover What People Are Searching For

100

apachegoogle-ads

HETZNER-AS - Hetzner Online GmbH, DE

Frequently asked questions

What technology does gwdg.de use?: gwdg.de is built with Apache.
Is gwdg.de secure (HTTPS)?: Yes. gwdg.de uses TLS 1.3 with a certificate issued by Hellenic Academic and Research Institutions CA, valid until Nov 7, 2026.
Who hosts gwdg.de?: Hosting provider information for gwdg.de is not available yet.
What is gwdg.de's SEO score?: gwdg.de scored 65/100 for SEO in the latest analysis (fair).
What is gwdg.de's overall website score?: gwdg.de has an overall SiteGraph score of 87/100, combining SEO, performance, security, and accessibility.
Has gwdg.de's score changed over time?: gwdg.de's overall score has declined by 2 points (from 89 to 87) since Jul 24, 2026.