It’s just a zip file with a different file extension. Zip a stack of jpegs with filenames that will list them in reading order when sorted alphabetically and then change the extension.

I’ve been using 1Blocker for years. It used to be a one-time purchase, but now it’s free with many features requiring a subscription.

I do subscribe, though. It’s updated frequently, can block trackers in apps, and syncs settings across all my devices. Its comment block feature has probably kept me sane.

https://apps.apple.com/us/app/1blocker-ad-blocker/id1365531024

Jellyfin has more functionality but is a lot more technical to set up. I didn’t think it was worth the effort since I already have a Plex server running, but I could see going through that if I didn’t.

Been running Plex with a lifetime pass for around a decade. Worth it for me for sure.