
Thank you. Immich integration is being built: More updates on immich community post : https://www.reddit.com/r/immich/comments/1p7g4t7/journiv_v010beta8_this_thanksgiving_give_your/

Thanks. Export will be added pretty soon. As of now you can export entries in PDF as that was one of the most requested feature. Since the beauty of self hosting is that all the data lives on your machine. You have it with you all the time. It is just a database (sqllite or postgres) and all your media files under a directory. Back up is pretty simple you just backup the docker volume or the bind mount directory which is standard for docker.
Although I do want to add a more human accessible export output which people who do not want to deal with db can use.
What kind of export would you like to see?
Thank you. Let me know your feedback.