AutoShipFlow

USPS label tool

USPS Label Resizer

Upload a USPS shipping label PDF, preview it, and resize it to 4x6, 4x4, A6, or a custom print size.

Preview
Upload a PDF to preview page 1 of the first file automatically.
Size settings
Choose a target size and processing mode. The preview updates automatically.

Output: 4 x 6 in

Keeps the full page content inside the target size. White margins may appear.

Files and results
Max 500MB total

Resize USPS PDF labels for thermal label paper

USPS shipping labels often need to print on 4x6 thermal label paper, but PDFs from different shipping platforms may include extra margins or different page sizes. This page defaults to 4x6 output and lets you preview barcode, address, and tracking-number placement.

4x6 by default

Matches the common thermal label size used for USPS shipping labels.

Check barcode and address

Preview whether key USPS label details are too small or cropped.

Batch PDFs

Upload multiple USPS label PDFs and apply the same settings after previewing.

Common USPS label cases
Printer scaling issues
Preview a 4x6 output before printing with a thermal label printer.
Too much page margin
Compare fit and fill modes when the original PDF has extra white space.
Different shipping platforms
Standardize USPS labels exported from different shipping tools.
USPS label resize FAQ
What size should USPS labels use?
A common thermal label size is 4 x 6 inches. Your printer and paper may vary, so preview before downloading.
Will this affect USPS barcode scanning?
The tool does not rewrite barcode content. Still check the preview to avoid cropping or shrinking the barcode too much.

More PDF Label Resizers

Resize 4x6 Labels to 4x4

Upload a 4x6 PDF label, preview the crop or fit result, then apply a 4x4 output size to all pages.

Amazon FBA Label Resizer

Resize Amazon FBA carton labels or warehouse labels to 4x4, 4x6, A6, or a custom print size.