The service, accessible under the domain static.maxresing.de is hosted by Max Resing. It is an non-commercial service primarily for private usage. The code can be found on Codeberg.org.
Accessing the service and resources happens completely anonymous. There is no logging activated. Hence, neither personally identifiable information nor any other kind of data is stored.
Questions and feedback can reach me via mail. Generally, I try to answer within a couple of days.