What technology does kohlhammer.de use?

We did not detect any specific technologies for kohlhammer.de in the latest scan.

Is kohlhammer.de secure (HTTPS)?

Yes. kohlhammer.de uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Nov 3, 2026.

Who hosts kohlhammer.de?

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

What is kohlhammer.de's SEO score?

kohlhammer.de scored 80/100 for SEO in the latest analysis (great).

What is kohlhammer.de's overall website score?

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

kohlhammer.de

Kohlhammer: Kohlhammer | Fachbuchverlag in Stuttgart

Last scanned Aug 24, 2026, 1:22 PM

Overall score

Great

Summary

Mit 400 neuen Büchern pro Jahr und 16 Fachzeitschriften zählt Kohlhammer aus Stuttgart zu den größten wissenschaftlichen Verlagshäusern im deutschsprachigen Raum. SEO is good (80/100) and accessibility is excellent (100/100). Security scores fair (70/100) and performance excellent (100/100). Top issue: Meta description longer than 160 characters.

Mit 400 neuen Büchern pro Jahr und 16 Fachzeitschriften zählt Kohlhammer aus Stuttgart zu den größten wissenschaftlichen Verlagshäusern im deutschsprachigen Raum.

Top issues to fix

6 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.
sitemap.xml not found
SEO
Publish an XML sitemap and reference it from robots.txt to speed up page discovery.

SEO

3 issue(s) found

100

Performance

320 ms

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.

Mit 400 neuen Büchern pro Jahr und 16 Fachzeitschriften zählt Kohlhammer aus Stuttgart zu den größten wissenschaftlichen Verlagshäusern im deutschsprachigen Raum.

X (Twitter)LinkedIn Instagram

Contact

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

Phone: 071178630

Meta tags

Title: Kohlhammer: Kohlhammer | Fachbuchverlag in Stuttgart
Description: Mit 400 neuen Büchern pro Jahr und 16 Fachzeitschriften zählt Kohlhammer aus Stuttgart zu den größten wissenschaftlichen Verlagshäusern im deutschsprachigen Raum.
Canonical: https://www.kohlhammer.de/
Language: de-de
Charset: utf-8
Viewport: width=device-width, initial-scale=1.0
Robots meta
Manifest

Technologies

Detected frameworks, languages, and tools.

No technologies detected.

Hosting & CDN

Hosting provider: —
CDN provider: —
IP address: 93.89.4.184
ASN: —

DNS records

Type	Value
A	93.89.4.184
AAAA	—
MX	—
TXT	—
NS	—
CAA	—
CNAME	stage-kohlhammer.rackspeed-cloud.de
IPv6 support	No

TLS / SSL certificate

Version: TLS 1.3
Issuer: Let's Encrypt
Subject: www.kohlhammer.de
Valid from: Aug 5, 2026
Valid to: Nov 3, 2026
Days until expiry: 70
SAN domains: kohlhammer.de, www.kohlhammer.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 3 · H3 0

Links

28 internal · 11 external · 0 broken

Images

34 total · 0 missing alt

Scripts / Styles

9 scripts · 3 stylesheets

JS / CSS size

269 KB · 67.3 KB

Page size

87.5 KB

Robots.txt & Sitemap

robots.txt: Found
Disallow rules: 7
sitemap.xml: Not found
URLs in sitemap: 0

SEO issues

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

Scan details

Requested URL: https://kohlhammer.de
Final URL: https://www.kohlhammer.de/
HTTP status: 200
HTTP version: HTTP/2
Response time: 319 ms
HTML size: 87.5 KB
Redirect chain: https://kohlhammer.de → https://www.kohlhammer.de/

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Frequently asked questions

What technology does kohlhammer.de use?: We did not detect any specific technologies for kohlhammer.de in the latest scan.
Is kohlhammer.de secure (HTTPS)?: Yes. kohlhammer.de uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Nov 3, 2026.
Who hosts kohlhammer.de?: Hosting provider information for kohlhammer.de is not available yet.
What is kohlhammer.de's SEO score?: kohlhammer.de scored 80/100 for SEO in the latest analysis (great).
What is kohlhammer.de's overall website score?: kohlhammer.de has an overall SiteGraph score of 87/100, combining SEO, performance, security, and accessibility.