Prepare the WebDAV server
- Prepare the protocol, host, port, mount path, base path, username, and password.
- The default base path in the app is
/Watermelon. - Confirm the account can create folders and upload files.
- HTTP is supported only on a local network. Use HTTPS when the server is not strictly local.
- OAuth login, Digest authentication, and client certificates are not supported.
Add the WebDAV Node
- In Watermelon Backup, choose Add WebDAV.
- Enter the endpoint fields and Basic authentication credentials.
- Use Test Connection if you want to verify that the base path can be listed.
- Save the Node and select it on Home.
- Wait for connection and remote index sync to finish.
Run the backup
- Grant Photos access if needed.
- Check the local-side months you want to back up.
- Tap Execute, review the confirmation, then start the task.
- Watermelon Backup uses WebDAV methods such as PROPFIND, PUT, GET, DELETE, MKCOL, MOVE, and COPY; modification-time updates are best-effort through PROPPATCH.
Download Watermelon Backup
Install Watermelon Backup from the App Store to follow this guide on iPhone.