I’m trying to set up a workflow to scan a document or receipt with my iPhone camera on iOS and immediately save the PDF to a specific folder - preferably avoiding having to select the folder every time. I’ve tried a number iOS scanning apps but none of them seem to have a ‘default folder’ to save to. I’ve also tried to accomplish this with shortcuts, but Shortcut support for scanning apps are also limited.
ScannerPro by Readdle is compatible with OneDrive and has an Auto Upload feature. You can also trigger a scan from the long press quick action menu on the app icon.
Expand here for settings screens to set this.
App settings for cloud services and auto upload in the upload section