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GET
/
api
/
v1
/
labels
/
{trackingNumber}
/
download
curl "https://api.crbtrack.com/api/v1/labels/CBECUSD123456789/download" \
  -H "X-API-Key: <YOUR_API_KEY>" \
  -o label.pdf

HTTP/1.1 200 OK
Content-Type: application/pdf
Content-Disposition: attachment; filename="CBECUSD123456789.pdf"
Content-Length: 45678

[Binary PDF data]

Documentation Index

Fetch the complete documentation index at: https://docs.crbtrack.com/llms.txt

Use this file to discover all available pages before exploring further.

Downloads the actual shipping label file. Returns the binary file content.

​
Path Parameters

​
trackingNumber
string
required
The tracking number of the parcel.

​
Query Parameters

​
format
string
default:"PDF"
Label format: PDF, ZPL, or PNG.

​
Response

Returns the label file with appropriate Content-Type header:
FormatContent-Type
PDFapplication/pdf
PNGimage/png
ZPLtext/plain
curl "https://api.crbtrack.com/api/v1/labels/CBECUSD123456789/download" \
  -H "X-API-Key: <YOUR_API_KEY>" \
  -o label.pdf

HTTP/1.1 200 OK
Content-Type: application/pdf
Content-Disposition: attachment; filename="CBECUSD123456789.pdf"
Content-Length: 45678

[Binary PDF data]

​
Label Specifications

PropertyValue
Size4” × 6” (100mm × 150mm)
Resolution203 DPI (thermal printers)
BarcodeCode 128
QR CodeContains tracking URL

​
Printer Compatibility

Use format=ZPL for Zebra and compatible thermal printers.Tested with:
  • Zebra ZD420
  • Zebra GK420d
  • TSC TDP-225
Use format=PDF for standard office printers.Print settings:
  • 100% scale (no fit to page)
  • Portrait orientation