This has prompted me to finish smoothing off the edges on a project I started a couple of years ago to make a Google Sheets script that can import journals into QuickFile via the API. If you want to try it take a copy of this Google sheet:
There’s a one-time setup process of granting permissions to the script in the spreadsheet, then you need to create an “app” in your QuickFile settings and enter the credentials (instructions in the “credentials” dialog in the sheet). But once you’re set up you should be able to import any CSV or similar that has journal data in it (columns for the nominal code, debit/credit amounts and optional line description) as a new “sheet” within the workbook, then use “import journal” to load it into QuickFile.