This website does not collect personal data from visitors.
The website is served by Netlify CDN which is probably collecting similar anonymous access data for usage statistics.
We utilize the Commento commenting plugin which is hosted on our own server in Germany. Commento allows anonymous comments as well as logging in via e-mail or third-party OAuth providers (Google, GitHub). By logging in you agree that your identifying information (e-mail address, name) is stored and a Cookie is installed to save the login state in the current browser. Additionally, Commento uses Akismet as a spam detection service.