Why is the printed label too dark and cannot be scanned?

1. Try to choose PDF file format for printing instead of PNG, PIG, and other image formats, when the barcode you print out is very fuzzy (please refer to the picture).
   
2. If the barcode still cannot be scanned,The reason is that the printer's density and speed settings are not suitable for the current shipping label, we need to adjust it in the printer settings please try to reduce the density and increase the speed (Please refer to "How to adjust the density and speed in the settings?" for specific operation steps).

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