cornelsen.de
Cornelsen Verlag | Cornelsen
Last scanned Jul 25, 2026, 12:25 PM · 2 views
Overall score
Excellent
Summary
Der Cornelsen Verlag bietet Bildungsmedien wie Schulbücher, Arbeitshefte und Materialien für den Unterricht für Lernende und Lehrende. This website uses Nginx hosted on AWS. SEO is excellent (95/100) and accessibility is excellent (100/100). Security scores excellent (90/100) and performance good (75/100). Top issue: Multiple H1 headings found.
Cornelsen
Der Cornelsen Verlag bietet Bildungsmedien wie Schulbücher, Arbeitshefte und Materialien für den Unterricht für Lernende und Lehrende.
- Mecklenburgische Straße 53, Berlin, 14197, DE
- Hosted on AWS
Top issues to fix
3 issues found
Missing X-Frame-Options header
SecurityAdd X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.
Multiple H1 headings found
SEOKeep a single H1 per page and demote the others to H2/H3.
10 broken links on the page
SEOFix or remove broken links — they waste crawl budget and erode user trust.
SEO
1 issue(s) found
Performance
272 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.
- service@cornelsen.de
- Address
- Mecklenburgische Straße 53, Berlin, 14197, DE
Meta tags
- Title
- Cornelsen Verlag | Cornelsen
- Description
- Der Cornelsen Verlag bietet Bildungsmedien wie Schulbücher, Arbeitshefte und Materialien für den Unterricht für Lernende und Lehrende.
- Canonical
- https://www.cornelsen.de/
- Language
- de
- Charset
- UTF-8
- Viewport
- width=device-width, initial-scale=1.0
- Robots meta
- index,follow
- Manifest
- https://www.cornelsen.de/_Resources/Static/Packages/Cornelsen.DesignKitPortals/Favicon/manifest.json
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- AWS
- CDN provider
- —
- IP address
- 63.185.119.220
- 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 1.3
- Issuer
- Amazon
- Subject
- cornelsen.de
- Valid from
- Oct 8, 2025
- Valid to
- Nov 6, 2026
- Days until expiry
- 104
- SAN domains
- cornelsen.de, *.cornelsen.de, *.mein.cornelsen.de
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyEnabled
- X-Frame-OptionsMissing
- X-Content-Type-OptionsEnabled
- Referrer-PolicyEnabled
- Permissions-PolicyMissing
Compression: gzip · 0 cookie(s) observed
Content & assets
Headings
H1 2 · H2 6 · H3 18
Links
216 internal · 12 external · 10 broken
Images
45 total · 0 missing alt
Scripts / Styles
14 scripts · 2 stylesheets
JS / CSS size
1.5 MB · 945 KB
Page size
250 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 4
- sitemap.xml
- Found
- URLs in sitemap
- -1
SEO issues
- Multiple H1 headings found
Accessibility issues
No accessibility issues detected.
Careers
This company has an active careers page, but individual openings weren't reliably parsed from it — visit the page above for current listings.
Scan details
- Requested URL
- https://cornelsen.de
- Final URL
- https://www.cornelsen.de/
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 267 ms
- HTML size
- 250 KB
- Redirect chain
- https://cornelsen.de → https://www.cornelsen.de/
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does cornelsen.de use?
- cornelsen.de is built with Google Ads, Meta Pixel, Nginx.
- Is cornelsen.de secure (HTTPS)?
- Yes. cornelsen.de uses TLS 1.3 with a certificate issued by Amazon, valid until Nov 6, 2026.
- Who hosts cornelsen.de?
- cornelsen.de is hosted on AWS.
- What is cornelsen.de's SEO score?
- cornelsen.de scored 95/100 for SEO in the latest analysis (excellent).
- What is cornelsen.de's overall website score?
- cornelsen.de has an overall SiteGraph score of 90/100, combining SEO, performance, security, and accessibility.
- What company operates cornelsen.de?
- cornelsen.de is operated by Cornelsen. Der Cornelsen Verlag bietet Bildungsmedien wie Schulbücher, Arbeitshefte und Materialien für den Unterricht für Lernende und Lehrende.
- Is cornelsen.de hiring?
- cornelsen.de has a careers page; check it directly for current openings.
OpenGraph & Twitter Card
OpenGraph
Twitter Card