Spreadsheet to print
Use a header row so Quicklio can map one column to the encoded value and optional columns to human-readable label text.
Barcode rules still matter
EAN-13 and UPC-A require valid numeric structures. Code 128 is more flexible for internal SKUs, and QR can encode longer text.
Sheet presets
The included layouts cover common Avery, A4, and thermal formats. Always test one sheet before a large print run because printer feed alignment varies.