What stays in this browser
My List, manual series checkpoints and your viewing-country preference use local browser storage. This website does not require an account to use them. Clearing that storage or ending a private-browsing session can remove those choices.
External content and destinations
Movie artwork loads from TMDB’s image service, which receives the requests needed to display it. Watch now opens a JustWatch destination. Those services can process connection information under their own policies; a local saved list does not make external requests anonymous.
A list backup includes title identifiers and episode notes. Keep it somewhere appropriate for your own viewing preferences. This site does not need payment details to create a backup, and the text contains no film files.
Use the controls on a title page to remove a save or clear a checkpoint. Before clearing all website data, keep a copy through list backup if you want to preserve those choices.