The recommended workflow of Paperless-ngx uses QR codes for ASN (archive serial number) labels. This script helps creating them using Python. It outputs a PDF for printing on the label sheets. Make sure to set print size to 100%, not fit to page or similar.

Other Avery (or competitor's) label sizes can be added to labelInfo in AveryLabels.py. All other settings are configured at the top part of main.py.

Use these settings for an initial position test to align your printer:

mode = "text"
debug = True

labelsAlreadyPrinted = 0
labelsCorrupted = 0
labelsToPrint = 1

positionHelper = True

Credits

This is based on the work from timrprobocom