Thumbnails from remote posts are stored on your server by default. However there is a setting to disable this.
https://github.com/LemmyNet/lemmy/blob/0.19.3/config/defaults.hjson#L54
Thumbnails from remote posts are stored on your server by default. However there is a setting to disable this.
https://github.com/LemmyNet/lemmy/blob/0.19.3/config/defaults.hjson#L54