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SGSiteGraph

dhm.de

Deutsches Historisches Museum

Last scanned Aug 1, 2026, 2:00 PM · 9 views

85

Overall score

Great

Summary

Das Deutsche Historische Museum (DHM) in Berlin ist Deutschlands nationales Geschichtsmuseum und eines der größten Geschichtsmuseen der Welt. This website uses Apache. SEO is good (75/100) and accessibility is excellent (100/100). Security scores fair (70/100) and performance excellent (100/100). Top issue: Meta description longer than 160 characters.

Das Deutsche Historische Museum (DHM) in Berlin ist Deutschlands nationales Geschichtsmuseum und eines der größten Geschichtsmuseen der Welt. Der Zugang ist barrierefrei. Das...

Top issues to fix

8 issues found · 2 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 X-Frame-Options header

    Security

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

  • Meta description longer than 160 characters

    SEO

    Trim the meta description to under 160 characters to avoid truncation in search results.

  • 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.

+2 more issues — details in the sections below.

75

SEO

4 issue(s) found

100

Performance

591 ms

70

Security

HTTPS & header checks

100

Accessibility

0 issue(s) found

Score history

-1 overall since Jul 25, 2026

Overall
85
SEO
75
Security
70
Performance
100
Accessibility
100

Organization

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

Das Deutsche Historische Museum (DHM) in Berlin ist Deutschlands nationales Geschichtsmuseum und eines der größten Geschichtsmuseen der Welt. Der Zugang ist barrierefrei. Das...

InstagramYouTube

Meta tags

Title
Deutsches Historisches Museum
Description
Das Deutsche Historische Museum (DHM) in Berlin ist Deutschlands nationales Geschichtsmuseum und eines der größten Geschichtsmuseen der Welt. Der Zugang ist barrierefrei. Das...
Canonical
https://www.dhm.de/
Language
de-DE
Charset
utf-8
Viewport
width=device-width, initial-scale=1
Robots meta
index, follow
Manifest

OpenGraph & Twitter Card

OpenGraph

og:title
DHM
og:description
DHM - Das Deutsche Historische Museum (DHM), in Berlins historischer Mitte gelegen, macht deutsche Geschichte im europäischen Kontext anschaulich.
og:type
website
og:url
https://www.dhm.de/

Twitter Card

twitter:card
summary_large_image
twitter:title
DHM
twitter:description
DHM - Das Deutsche Historische Museum (DHM), in Berlins historischer Mitte gelegen, macht deutsche Geschichte im europäischen Kontext anschaulich.

Technologies

Detected frameworks, languages, and tools.

jQueryApache

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
www.dhm.de
Valid from
Dec 12, 2025
Valid to
Dec 12, 2026
Days until expiry
132
SAN domains
www.dhm.de, www.www.dhm.de, m.dhm.de, www.m.dhm.de, dhm.de

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 1 · H2 12 · H3 7

Links

64 internal · 11 external · 20 broken

Images

26 total · 0 missing alt

Scripts / Styles

7 scripts · 1 stylesheets

JS / CSS size

141 B · 0 B

Page size

128 KB

Robots.txt & Sitemap

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

SEO issues

  • Meta description longer than 160 characters
  • No structured data (JSON-LD) found
  • robots.txt not found
  • sitemap.xml not found

Accessibility issues

No accessibility issues detected.

Scan details

Requested URL
https://dhm.de
Final URL
https://www.dhm.de/
HTTP status
200
HTTP version
HTTP/2
Response time
589 ms
HTML size
128 KB
Redirect chain
https://dhm.de → https://www.dhm.de/

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does dhm.de use?
dhm.de is built with jQuery, Apache.
Is dhm.de secure (HTTPS)?
Yes. dhm.de uses TLS 1.3 with a certificate issued by Hellenic Academic and Research Institutions CA, valid until Dec 12, 2026.
Who hosts dhm.de?
Hosting provider information for dhm.de is not available yet.
What is dhm.de's SEO score?
dhm.de scored 75/100 for SEO in the latest analysis (fair).
What is dhm.de's overall website score?
dhm.de has an overall SiteGraph score of 85/100, combining SEO, performance, security, and accessibility.
Has dhm.de's score changed over time?
dhm.de's overall score has declined by 1 point (from 86 to 85) since Jul 25, 2026.