Shipping Label HelperCheck label size and print scale

No signup required

Print the right shipping label size before you buy postage.

Pick your marketplace, carrier, paper and printer. Get a clear 4×6, Letter or A4 recommendation with the exact scale, orientation and print-dialog settings to avoid cut-off, tiny or unscannable labels.

Solve shipping label size, print scale and printer-setting problems before you buy postage or reprint a carrier label.

Choose your path

I’m setting up a label

Choose marketplace, carrier, paper and printer.

Start setup check

My print already failed

Tiny, cut off or blurry? Diagnose the symptom next.

Fix a bad print

I want a safe test

Choose a blank template, calibration sheet or test pack.

Open Test Print

Free checker first. No account, dashboard or label upload needed.

Step 1 · Choose setup

Printer type matters because thermal printers usually use 4×6 label rolls, while inkjet/laser printers usually use A4 or Letter sheets.

Step 2 · Read result

Your print plan

Based on the selected platform, carrier, paper and printer. Confirm the carrier label file before buying postage.

Compatible
Calculated result: compatible. Good baseline setup.

This platform and carrier combination should normally print at 100% scale. A 4 × 6 thermal label is the safest setup for label printers.

Use

4 × 6 inches

4 × 6 in

Metric size
101.6 × 152.4 mm
Set print dialog to
100% — do not select Fit to Page
Orient
Portrait

Avoid

  • 1Selecting Fit to Page instead of printing at 100% scale.
  • 2Loading the 4 × 6 label roll sideways or with the wrong orientation.
  • 3Letting the platform crop the label instead of downloading the carrier PDF.

Step 3 · Print test

Do this next

Download 4×6 test PDF

Download the blank 4×6 test PDF, then print it at 100% scale before buying or reprinting postage.

Use this when your setup looks usable and you need a safe physical test.

Download 4×6 test PDF

Carrier and platform rules may change. This tool does not certify or guarantee label acceptance. Open official documentation

After the check

Use the result to choose one next step.

Most print problems come from the same setup chain: paper size, print scale, orientation, margins, then barcode whitespace. Start with the checker above, then move only to the tool that matches the result.

Setup looks rightPrint a blank template before paid postage.Printed size is wrongCalculate the corrected print percentage.PDF size looks oddRead page boxes before changing printer settings.Barcode still failsReview quiet zone, density, glare and damage.

Verify before you ship

This tool helps with label sizing and PDF formatting only. It does not generate postage, validate customs compliance, or detect printer and paper problems on your side. Before shipping, scan the barcode and verify addresses, customs text, tracking numbers and final label size.

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