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Zebra printer Australia Post setup guide

Set up a Zebra printer for Australia Post labels with 100x150mm sizing, MyPost Business settings, and common fixes.

·10 minutes reading
Cover Image for Zebra printer Australia Post setup guide

A Zebra printer Australia Post setup sounds simple until the first test label comes out blank, tiny, sideways, or chopped through the barcode. If you sell on eBay, Shopify, Etsy or Amazon AU, that usually means wasted labels and a packing bench that stops moving.

Zebra printers are good machines. The problem is that Australia Post labels, MyPost Business PDFs, Windows print settings and 100x150mm label rolls all need to agree with each other. This guide walks through the setup in plain English, with the settings that matter and the mistakes that cost sellers the most time.

Packing bench with parcels ready for Australia Post Zebra label printing

In this article:

Can you use a Zebra printer for Australia Post labels?

Yes. A Zebra printer can print Australia Post labels as long as it supports direct thermal shipping labels and you set the media size correctly.

For most Australian sellers, the target size is 100x150mm. You will also see this sold as 4x6 inches. The two sizes are close, but they are not identical, so choose 100x150mm in the driver if it is available.

Common Zebra models for shipping labels include:

  • Zebra ZD421, a strong current desktop model for daily sellers
  • Zebra ZD220, a simpler budget model
  • Zebra GK420d, a common used model that still does the job
  • Zebra GX420d, another older desktop model you may see second hand

Zebra has official support pages for the ZD421, ZD220 and GK420d. Use those pages for model manuals, firmware and driver downloads.

Direct thermal is the normal choice

For Australia Post shipping labels, direct thermal is usually what you want. The label darkens when the printhead heats it, so there is no ink and no ribbon.

If your Zebra is set to thermal transfer, or you bought the wrong label stock, you can get blank labels even when the printer sounds like it is working.

A quick test helps. Scratch the label surface with a fingernail or coin. If the mark turns dark, it is direct thermal stock.

ZPL is not required for most sellers

ZPL is Zebra's printer language. It matters for warehouse systems and direct integrations, but most MyPost Business sellers print PDF labels.

If your workflow is MyPost Business, eBay, Shopify, Etsy or Amazon AU exporting a PDF, you usually do not need to edit ZPL. Install the driver, set the paper size, calibrate the media, then print the PDF at actual size.

Set up your Zebra thermal printer

Do the boring setup properly once. It saves you from chasing half a millimetre of label drift every packing day.

Online seller packing station with parcels and shipping label workflow

Install the Zebra driver before testing labels

On Windows, start with Zebra's own software rather than hoping Windows picks the right driver.

  1. Download Zebra Setup Utilities from Zebra's support site.
  2. Download the Zebra printer driver if the setup utility points you there.
  3. Run the installer before you plug in the printer, unless Zebra's installer tells you otherwise.
  4. Connect the printer by USB.
  5. Print a Windows test page or Zebra configuration label before you open MyPost Business.

For Mac users, Zebra offers a CUPS driver for macOS. Mac printing can be fine, but check paper size and scaling carefully because PDF viewers and browsers can quietly shrink the label.

Load the labels the right way

Open the printer and place the roll so the printable side faces the printhead. On many Zebra desktop printers, the labels feed from underneath the roll and out the front.

Keep the guides snug against the label edges without squeezing the roll. If the guides are too loose, the label can wander sideways. If they are too tight, the printer can feed unevenly.

Close the lid firmly. A half-latched lid can cause faint print, skipped labels or random feeding.

Calibrate before using real postage

Calibration teaches the Zebra where each label starts and stops. Run it after loading a new roll, changing label size, or moving between different label brands.

You can usually calibrate from Zebra Setup Utilities on Windows. Older GK420d printers can also use a feed-button calibration process, but check the official manual for your exact model.

Run calibration when you see any of these signs:

  • The printer feeds two or three labels for one print job
  • The barcode starts halfway down the label
  • The label is cut off at the top or bottom
  • Blank labels feed before or after the print
  • The printer stops between labels in the wrong spot

Configure Zebra printer Australia Post label settings

The Zebra printer Australia Post setup mainly comes down to size, scale and calibration. If those are wrong, everything downstream looks broken.

Use 100x150mm or 4x6 inches

In Windows, open your printer preferences. The path varies a little, but it is usually:

  1. Open Settings.
  2. Go to Bluetooth and devices.
  3. Open Printers and scanners.
  4. Select your Zebra printer.
  5. Open Printing preferences.
  6. Choose or create a stock size of 100mm wide by 150mm high.

If the driver only offers inches, choose 4x6 inches. Then print a test label and check whether the barcode and address are fully inside the label.

Do not use A4 as the Zebra paper size. A4 belongs to the PDF page, not the thermal label roll.

Start with conservative print settings

Fast printing is nice, but a barcode that Australia Post cannot scan is worse than waiting an extra second.

Start with these settings:

  • Print method: Direct thermal
  • Media type: Gap, web or labels with gaps
  • Print mode: Tear off
  • Size: 100x150mm or 4x6 inches
  • Scale: Actual size or 100%
  • Orientation: Portrait for most 100x150mm labels
  • Speed: Default or one step slower if the barcode looks broken
  • Darkness: Default, then increase slightly if the print is faint

Print one test label and scan the barcode with your phone camera if possible. It does not prove Australia Post will accept it, but it helps catch rough print quality before you lodge a parcel.

Watch the 100x150mm versus 4x6 difference

A true 4x6 inch label is about 101.6mm by 152.4mm. A 100x150mm label is slightly smaller.

That small difference is enough to clip a barcode if the PDF is already tight to the edge. If your labels are sold as 100x150mm, create a 100x150mm stock size instead of assuming 4x6 is perfect.

Australia Post's MyPost Business is the usual route for many Australian small sellers. eBay AU also has its own help page for printing postage labels, which is worth checking if your label starts inside eBay rather than inside MyPost Business.

Parcels ready for Zebra shipping labels in an Australian online store workflow

MyPost Business PDF workflow

The safest basic workflow is:

  1. Create the shipment in MyPost Business.
  2. Download the label PDF.
  3. Open the PDF in a viewer that gives you clear print scaling controls.
  4. Select your Zebra printer.
  5. Set the paper size to 100x150mm or 4x6 inches.
  6. Choose actual size or 100% scale.
  7. Check the preview before printing.
  8. Print one label and check the barcode, address and sender details.

Avoid fit to page as your default. It can shrink the label or shift it away from the edge, which looks harmless on screen but prints badly on a small label.

eBay, Shopify, Etsy and Amazon AU labels

Marketplace labels vary. Some give you a clean 4x6 or A6 option. Others give you an A4 PDF with the usable label sitting in one corner.

If your marketplace offers 4x6, A6, 100x150mm or thermal label output, choose that before downloading. It is cleaner than trying to repair the label at print time.

If the platform gives you only an A4 PDF, do not keep fighting the Zebra driver. The printer is doing what you told it to do. It is trying to print an A4 page onto a 100x150mm roll.

That is where sellers end up screenshotting labels, pasting into Word, cropping in Acrobat, then printing the same order three times. It works on a quiet day. It falls apart when you have twenty parcels on the bench.

When to crop the PDF before printing

Crop before printing if the actual postage label is only one part of an A4 page. The Zebra needs the final page size to match the label roll.

You can do this manually with PDF tools, but it gets old fast. If you only need to fix one Zebra test label, use the free A4 to 4x6 shipping label converter. If you ship daily, a watch-folder tool that converts MyPost Business A4 labels to 100x150mm output is usually less painful.

Fix common Zebra shipping label printer problems

Most Zebra shipping label printer problems fit into a few buckets. Work through them in order instead of changing ten settings at once.

Computer screen used to configure Zebra thermal printer settings for shipping labels

Zebra printer prints blank labels

Check the label stock first. Make sure it is direct thermal and loaded with the thermal side facing the printhead.

Then check the driver. The print method should be direct thermal, not thermal transfer. If the printer expects a ribbon that is not there, the result can be blank or faint.

If it still prints blank, print a Zebra self-test or configuration label. If the self-test prints, your printer hardware is probably fine and the issue is the PDF, driver or print settings.

Australia Post label prints too small

This usually means the PDF is being scaled down. Open the print dialog and change scaling to actual size or 100%.

Also check the Zebra paper size. If the printer is set to A4, Letter, 50x30mm, or some old stock size from a previous owner, your label will not come out correctly.

Label is off-centre or cut off

Run media calibration first. Then confirm the stock size matches your real labels.

If the label is still a little left, right, high or low, check the horizontal and vertical offset settings in the Zebra driver. Make tiny changes and print one test at a time.

Do not keep changing orientation, scale, darkness and offsets together. You will lose track of what fixed what.

Printer feeds multiple labels

Multiple feeds usually point to gap sensing or calibration. The printer cannot tell where one label ends and the next begins.

Reload the roll, centre the guides, then run calibration. If you changed from one label brand to another, calibrate again even if the size on the box looks the same.

Barcode is faint or broken

Clean the printhead and slow the print speed by one step. If the barcode is still faint, increase darkness slightly.

Do not crank darkness to the maximum straight away. Too much heat can thicken lines and make barcodes harder to scan.

If you are still sorting out your full label workflow, these guides pair well with this Zebra setup:

Final setup checklist

Before you trust your Zebra printer with a day's parcels, run this quick check:

  1. Zebra driver installed from the official Zebra support site.
  2. Printer added as the correct model, not a generic printer.
  3. Label stock is direct thermal.
  4. Paper size is 100x150mm or 4x6 inches.
  5. Printer has been calibrated after loading the roll.
  6. Print scaling is actual size or 100%.
  7. Barcode is sharp, complete and not clipped.
  8. Address and sender details are readable.
  9. Label sticks flat on the parcel with no tape across the barcode.

A Zebra thermal printer setup is worth the effort if you ship every day. Once the driver, stock size and calibration are right, the printer should become boring in the best way.

If MyPost Business is still handing you A4 PDFs and you are tired of cropping them by hand, LabelChop can watch your Downloads folder, crop the label to 100x150mm, and send it to your Zebra printer automatically. See the plans on /pricing, or check common setup questions on /faq.