Shippo

Overview of Shippo shipping integration

Labels

Understanding different label formats (PDF, PNG, ZPL) and when to use each.

Shippo supports multiple label formats to accommodate different printer types and use cases. Choose the format that matches your printer and workflow.

Label Format Options

Label Type	Dimensions (Imperial)	Dimensions (Metric)	Token
2.3 x 7.5 in PDF	2.3 x 7.5 in	59 x 191 mm	`PDF_2.3x7.5`
2.3 x 7.5 in PNG	2.3 x 7.5 in	59 x 191 mm	`PNG_2.3x7.5`
4 x 8 in PDF	4 x 8 in	100 x 200 mm	`PDF_4x8`
4×6 in PDF (Default)	4 x 6 in	102 x 153 mm	`PDF_4x6`
8.5×11 in PDF	8.5 x 11 in	210 x 279 mm	`PDF`
A4 PDF	8.3 x 11.7 in	210 x 297 mm	`PDF_A4`
A5 PDF	5.8 x 8.3 in	148 x 210 mm	`PDF_A5`
A6 PDF	4.1 x 5.8 in	105 x 148 mm	`PDF_A6`
ZPL II	—	—	`ZPLII`
PNG	—	—	`PNG`

Carrier Compatibility

Each carrier supports different label size options. Not all formats work with all carriers. The default 4×6 inch PDF format is the most widely supported.

Choosing the Right Format

PDF Formats

Best for standard office printers. The 4×6 inch format is the most common for shipping labels and works with thermal printers and standard printers alike.

PNG Formats

Image format that can be useful for custom printing workflows or when you need to embed labels in other documents.

ZPL II Format

Designed specifically for Zebra thermal printers. This format sends raw commands directly to the printer for fast, high-quality label printing.

Setting Your Default

You can set your preferred label format in Account Settings under Units & Settings. This will be used for all new shipments unless you change it for a specific shipment.

Additional Resources

Links to Shippo documentation, guides, and support.