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SGSiteGraph

dfn.de

Startseite - DFN

Last scanned Jul 29, 2026, 6:00 PM · 10 views

83

Overall score

Great

Summary

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

Top issues to fix

8 issues found · 3 high priority

  • 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.

  • No H1 heading found

    SEO

    Add exactly one H1 describing the page's main topic — it anchors the document outline for search engines and screen readers.

  • Missing X-Content-Type-Options header

    Security

    Add X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.

  • Missing X-Frame-Options header

    Security

    Add X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.

  • robots.txt not found

    SEO

    Publish /robots.txt with a Sitemap: directive to guide crawlers.

+2 more issues — details in the sections below.

70

SEO

4 issue(s) found

100

Performance

514 ms

75

Security

HTTPS & header checks

90

Accessibility

1 issue(s) found

Score history

-3 overall since Jul 21, 2026

Overall
83
SEO
70
Security
75
Performance
100
Accessibility
90

Organization

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

LinkedIn

Meta tags

Title
Startseite - DFN
Description
Canonical
https://www.dfn.de/
Language
de-DE
Charset
UTF-8
Viewport
width=device-width, initial-scale=1
Robots meta
index, follow, max-image-preview:large, max-snippet:-1, max-video-preview:-1
Manifest

OpenGraph & Twitter Card

OpenGraph

og:title
Startseite - DFN
og:description
—
og:type
website
og:url
https://www.dfn.de/

Twitter Card

twitter:card
summary_large_image
twitter:title
—
twitter:description
—

Technologies

Detected frameworks, languages, and tools.

WordPressPlausible AnalyticsApache

Hosting & CDN

Hosting provider
—
CDN provider
—
IP address
—
ASN
—

DNS records

TypeValue
A—
AAAA—
MX—
TXT—
NS—
CAA—
CNAME—
IPv6 supportNo

TLS / SSL certificate

Version
TLS 1.3
Issuer
Hellenic Academic and Research Institutions CA
Subject
dfn.de
Valid from
Sep 9, 2025
Valid to
Sep 9, 2026
Days until expiry
41
SAN domains
dfn.de, www.dfn.de

Security headers

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

Compression: gzip · 0 cookie(s) observed

Content & assets

Headings

H1 0 · H2 8 · H3 3

Links

37 internal · 4 external · 20 broken

Images

12 total · 0 missing alt

Scripts / Styles

12 scripts · 5 stylesheets

JS / CSS size

3.1 KB · 9.1 KB

Page size

71.7 KB

Robots.txt & Sitemap

robots.txt
Not found
Disallow rules
0
sitemap.xml
Not found
URLs in sitemap
0

SEO issues

  • Missing meta description
  • No H1 heading found
  • robots.txt not found
  • sitemap.xml not found

Accessibility issues

  • No H1 heading found

Scan details

Requested URL
https://dfn.de
Final URL
https://www.dfn.de/
HTTP status
200
HTTP version
HTTP/2
Response time
513 ms
HTML size
71.7 KB
Redirect chain
https://dfn.de → https://www.dfn.de/

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does dfn.de use?
dfn.de is built with WordPress, Plausible Analytics, Apache.
Is dfn.de secure (HTTPS)?
Yes. dfn.de uses TLS 1.3 with a certificate issued by Hellenic Academic and Research Institutions CA, valid until Sep 9, 2026.
Who hosts dfn.de?
Hosting provider information for dfn.de is not available yet.
What is dfn.de's SEO score?
dfn.de scored 70/100 for SEO in the latest analysis (fair).
What is dfn.de's overall website score?
dfn.de has an overall SiteGraph score of 83/100, combining SEO, performance, security, and accessibility.
Has dfn.de's score changed over time?
dfn.de's overall score has declined by 3 points (from 86 to 83) since Jul 21, 2026.