duden.de
Duden | Sprache sagt alles.
Last scanned Jul 25, 2026, 12:25 PM · 4 views
Overall score
Excellent
Summary
Duden ist die Marke der deutschen Sprache ➤ Wörterbücher, Sachbücher, Ratgeber, Lernhilfen und viele digitale Produkte (Software und Apps) ➤ Duden ist mehr als ein Wörterbuch!. This website uses Drupal hosted on AWS. SEO is good (85/100) and accessibility is excellent (100/100). Security scores good (80/100) and performance excellent (100/100). Top issue: Meta description longer than 160 characters.
Duden ist die Marke der deutschen Sprache ➤ Wörterbücher, Sachbücher, Ratgeber, Lernhilfen und viele digitale Produkte (Software und Apps) ➤ Duden ist mehr als ein Wörterbuch!
- United States
- Hosted on AWS
Top issues to fix
4 issues found · 2 high priority
Missing Strict-Transport-Security header
SecurityAdd HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.
Missing Content-Security-Policy header
SecurityAdd a CSP to control which sources can run scripts — the strongest single defense against XSS.
Meta description longer than 160 characters
SEOTrim the meta description to under 160 characters to avoid truncation in search results.
No structured data (JSON-LD) found
SEOAdd JSON-LD (Organization, Article, Product…) to become eligible for rich results.
SEO
2 issue(s) found
Performance
264 ms
Security
HTTPS & header checks
Accessibility
0 issue(s) found
Organization
Company details published in this site's own structured data.
Contact
Email, phone, and address published on this site's own pages.
Source: https://www.duden.de/support
Meta tags
- Title
- Duden | Sprache sagt alles.
- Description
- Duden ist die Marke der deutschen Sprache ➤ Wörterbücher, Sachbücher, Ratgeber, Lernhilfen und viele digitale Produkte (Software und Apps) ➤ Duden ist mehr als ein Wörterbuch!
- Canonical
- https://www.duden.de
- Language
- de
- Charset
- utf-8
- Viewport
- width=device-width, initial-scale=1.0
- Robots meta
- index
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- AWS
- CDN provider
- —
- IP address
- 63.185.208.79
- ASN
- AS16509 (AMAZON-02 - Amazon.com, Inc., US)
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA | — |
| MX | — |
| TXT |
|
| NS |
|
| CAA | — |
| CNAME | — |
| IPv6 support | No |
TLS / SSL certificate
- Version
- TLS 1.2
- Issuer
- Amazon
- Subject
- duden.de
- Valid from
- May 13, 2026
- Valid to
- Nov 26, 2026
- Days until expiry
- 124
- SAN domains
- duden.de, *.duden.de
Security headers
- Strict-Transport-SecurityMissing
- Content-Security-PolicyMissing
- X-Frame-OptionsEnabled
- X-Content-Type-OptionsEnabled
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: gzip · 0 cookie(s) observed
Content & assets
Headings
H1 1 · H2 16 · H3 0
Links
64 internal · 30 external · 0 broken
Images
26 total · 0 missing alt
Scripts / Styles
15 scripts · 4 stylesheets
JS / CSS size
472 KB · 98.1 KB
Page size
113 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 111
- sitemap.xml
- Found
- URLs in sitemap
- 1772
SEO issues
- Meta description longer than 160 characters
- No structured data (JSON-LD) found
Accessibility issues
No accessibility issues detected.
Scan details
- Requested URL
- https://duden.de
- Final URL
- https://www.duden.de/
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 262 ms
- HTML size
- 113 KB
- Redirect chain
- https://duden.de → https://www.duden.de/
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does duden.de use?
- duden.de is built with Astro, Drupal.
- Is duden.de secure (HTTPS)?
- Yes. duden.de uses TLS 1.2 with a certificate issued by Amazon, valid until Nov 26, 2026.
- Who hosts duden.de?
- duden.de is hosted on AWS.
- What is duden.de's SEO score?
- duden.de scored 85/100 for SEO in the latest analysis (great).
- What is duden.de's overall website score?
- duden.de has an overall SiteGraph score of 91/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card