Privacy policy

Last updated: October 2026. This English version is provided for convenience. The German version is legally binding.

This website uses no cookies, no tracking, no analytics tools and no embedded third-party content. Fonts and images are served from this website’s own server. Below you can find out which data is nevertheless processed and what rights you have.

1. Controller

Friedemann Wittlinger
Auberlenstr. 58/1
70736 Fellbach, Germany
Email: mail@friedemannwittlinger.de

No data protection officer has been appointed, as there is no legal obligation to do so.

2. Hosting and server log files

This website is hosted by Vercel Inc., 440 N Barranca Avenue #4133, Covina, CA 91723, USA. The region is set to the European Union. Vercel uses a global server network for fast delivery, so processing outside the EU cannot be ruled out.

When you visit these pages, Vercel automatically processes information that your browser sends:

IP address
date and time of the request
page visited and amount of data transferred
referrer URL
browser type and operating system

The legal basis is Art. 6(1)(f) GDPR. My legitimate interest is the secure and stable delivery of this website. I do not analyse this data or combine it with other data. Vercel stores log data only for as long as necessary for operation and security and deletes it afterwards.

A data processing agreement pursuant to Art. 28 GDPR is in place with Vercel. Vercel Inc. is certified under the EU-U.S. Data Privacy Framework. Transfers to the USA are based on the European Commission’s adequacy decision (Art. 45 GDPR) and, in addition, on EU standard contractual clauses (Art. 46 GDPR). For details, see Vercel’s privacy policy.

3. Contact by email

If you send me an email, I process the information you provide (email address, name, content of the message) to answer your enquiry. The legal basis is Art. 6(1)(b) GDPR if your enquiry relates to a contract, and Art. 6(1)(f) GDPR otherwise. Your data is deleted once the enquiry has been fully dealt with, unless statutory retention obligations apply.

4. Cookies and tracking

This website sets no cookies and uses no analytics or marketing services. Consent under Section 25 of the German TDDDG is therefore not required.

5. Fonts

The fonts used (Inter, Inter Tight) are stored locally on the server. No connection to Google or any other font provider is made when you visit the page.

6. External links

This website links to the certificate verification page on Credsverse (Certifier). Only when you click the link do you leave this website, and the privacy policy of the respective provider then applies. No data is sent to these services beforehand.

7. Your rights

You have the right at any time to

access the data stored about you (Art. 15 GDPR)
rectification of inaccurate data (Art. 16 GDPR)
erasure (Art. 17 GDPR)
restriction of processing (Art. 18 GDPR)
data portability (Art. 20 GDPR)
withdraw any consent given, with effect for the future (Art. 7(3) GDPR)

Right to object

Where processing is based on Art. 6(1)(f) GDPR, you may object at any time on grounds relating to your particular situation (Art. 21 GDPR).

Right to lodge a complaint

Under Art. 77 GDPR, you may lodge a complaint with a data protection supervisory authority, in particular in the EU member state of your habitual residence, your place of work or the place of the alleged infringement. The authority responsible for me is the State Commissioner for Data Protection and Freedom of Information Baden-Württemberg (Der Landesbeauftragte für den Datenschutz und die Informationsfreiheit Baden-Württemberg), Lautenschlagerstraße 20, 70173 Stuttgart, Germany.

8. SSL/TLS encryption

For security reasons, this website uses TLS encryption. You can recognise an encrypted connection by “https://” in your browser’s address bar.