Using the correct shipping label size is important to make sure parcels are accepted and processed correctly by carriers.
Standard label sizes
nShift supports the standard shipping label sizes used across the industry:
- United States: 4 × 6 inches
- Europe: 100 × 150 mm
In the United States, the 4 × 6 inch format is the industry standard and is used by USPS, UPS, FedEx, DHL, and major e-commerce platforms.
In Europe, the standard label size is 100 × 150 mm, which is widely used by European carriers and logistics providers.
How labels are generated
Shipping labels are generated in one of two ways:
- By nShift
- Directly by the carrier
For API integrations, carriers often return the label directly in their response. When a label is generated by the carrier, nShift cannot modify it.
Why smaller labels are not supported
Using label sizes smaller than the established standards can cause important shipping information to be cut off, hidden, or difficult to scan.
This may result in:
- Critical shipment information being truncated or obscured
- Barcodes becoming unreadable
- Carrier rejection or processing issues
Because carriers require labels to meet their standard size requirements, smaller label formats are not acceptable.
nShift does not support label sizes smaller than the following standard formats:
Using these standard sizes helps ensure labels remain compliant, readable, and accepted by carriers. |