This website was created with the static site generator Hugo using the PaperMod theme and is hosted on Netlify. The newsletter uses ConvertKit.
This site remembers your theme preference (light or dark) in a cookie.
It is possible that Hugo, PaperMod, ConvertKit and Netlify collect information in ways that I am not aware of. Apart from the information described here and data collection I am not aware of, no other information is collected, stored, or evaluated.