To backup all photos that are currently in Phototheca follow next steps:
- Go to “Events” section, select either all events or few specific events that you want to backup. Go to menu File->Export Photos…
- Specify a target location using “Browse” button
- Hit “Export” button to start export. Phototheca will copy all photos of selected events to the provided location.
- Repeat the same with Albums — select all albums and folders and do an export.
Now you have a backup of all photos.
Read more: Export photos | Phototheca User Guide