Generate Shipment Labels Via API

With the Label Resizer Shipment Label API, you can programmatically generate shipment labels and integrate them into your own system. A paid subscription is required to use the API. You can get your API credentials by going to Account → API Service inside your Label Resizer account.

The API reference includes all available endpoints, authentication details, request and response formats, and error codes. For the full interactive API reference, click the button below.