Paper Size | Printer Type | Courier |
---|---|---|
4″ x 6″ | Thermal printer | UPS, DHL, FedEx, USPS, Royal Mail |
8″ x 11.5″ (~A4) | Laser or inkjet printer | All couriers |
Basically 4×6 paper size is used when printing labels with thermal printers. Unlike normal desktop printers using normal A4 papers, thermal printers are using heat-sensitive sticker paper which is faster in printing and allows you to stick the label on the package directly.