How to Print 4×6 Shipping Labels? | Thermal Setups That Work

Printing a 4×6 shipping label requires a thermal printer set to portrait orientation with the correct 4×6 inch or 100x150mm paper size selected in either the printer driver or your shipping software.

A label that prints too small, lands sideways, or feeds blank pages is almost always a settings problem, not a hardware one. Most shipping platforms — Pirate Ship, UPS WorldShip, Amazon Seller Central, and even Microsoft Word — can send the right signal to a thermal printer. The fix across all of them comes down to three things: the paper size, the orientation, and the scale. Here is exactly where those settings live on every major platform.

What You’ll Need Before You Print

A 4×6 thermal label printer like a Vevor, Rollo, Arkscan, or Jadens handles the standard label size (4 inches by 6 inches, also called 100x150mm). The printer needs the correct driver installed from the manufacturer’s download page — generic Windows drivers often fail to recognize the label gap. You also need thermal labels (direct thermal paper, no ink or toner) and a browser or shipping application that supports 4×6 output.

Pirate Ship and Other Web-Based Shipping

Pirate Ship, Shippo, and similar browser-based tools print labels directly through Chrome, Firefox, or Edge. The key is setting the browser’s print dialog, not the software itself.

In Chrome: Buy your label and click “Print Label.” Select 4×6″ as the label format. In the print preview, click “More Settings” and set Paper Size to 4×6 inches or 100x150mm. Double-check that Orientation is set to Portrait. Click Print.

In Firefox: Click “Properties” after selecting your thermal printer. Set Orientation to Portrait, then click “Advanced” and choose Paper Size as 100x150mm. Click OK three times to send the job.

In Edge: Set “Scale to Actual Size,” then click “More Settings.” Change Orientation to Portrait and Paper Size to 100x150mm or 4×6 inches.

If the popup does not list 4×6 as an option, the printer driver may be missing — install the manufacturer’s driver first, then try again.

UPS WorldShip: Setting Up for Thermal 4×6 Labels

WorldShip has its own label configuration menu separate from Windows printer settings. Go to the Tools tab, then System Preferences > Printing Setup. Find your thermal printer in the list and click Label Printer Setup. If the printer name is wrong, click “Change Label Printer” and pick the correct one. Under “Label Configuration,” choose Thermal 4×6 or 4×6¼ from the “Label Stock Dimensions” dropdown. Click Apply, then verify both the printer name and label stock dimensions show the correct values.

Amazon Seller Central and eBay

Amazon’s shipping page includes a “Label print orientation” button after you confirm package details. Click it and set the dropdown to 4×6 inches. On a Mac, open the label with Preview, select your thermal printer under the print dialog, and choose paper size 4×6 inch or 100x150mm. On iOS, the Flashlabel Pro app handles the sizing automatically — select “Print with Flashlabel Pro” from the share sheet. For eBay labels, the same browser settings from the Pirate Ship section apply: portrait, 4×6 paper, scale to fit.

Microsoft Word: Creating Custom 4×6 Labels

Word does not have a shipping label template built in, but you can create one. Go to Mailings > Labels > Options > New Label. Enter the exact dimensions: width 4 inches, height 6 inches. Set the margins if needed via File > Options > Advanced > Display > Measurement unit to inches. Type your address in the box, select “Full page of the same label,” then click New Document. Press Ctrl+P to preview and adjust the paper size, then print. This method is useful if you need custom return address labels on 4×6 thermal stock, but it is not ideal for carrier-generated shipping labels — use your browser or shipping software for those.

Resizing Legacy Labels from Adobe Acrobat

Some carrier PDFs are formatted for 8.5×11 paper. Opening them in a thermal printer without resizing produces a label that is too small or misplaced. In Adobe Acrobat, go to Edit > Take a Snapshot and drag a box over the full label area. Then go to File > Print. Set Custom Scale to 75% (the standard reduction from letter size to 4×6). Ensure orientation is Portrait and uncheck “Choose paper source by PDF page size.” Set the paper source to 4×6 manually. Alternatively, use the Crop tool to trim the label area, then select “Fit to paper size” in the print dialog.

Feeding and Calibrating the Thermal Printer

Thermal label printers need to identify the gap between labels to stop feeding at the right spot. Most models calibrate automatically when you hold the feed button during power-on. Check your printer’s manual for the exact sequence. The paper guides must slide snugly against the label roll — too loose causes skewed printing, too tight jams the paper. In the printer properties, set the Media Type to Labels if available, or Heavyweight/Cardstock if Labels is not listed. This changes how the printer pulls the paper through the rollers.

If you are still setting up your workspace, our detailed roundup of top-rated 4×6 shipping label options can help you pick the right thermal stock for your printer.

Checklist: Printing 4×6 Labels Without the Guesswork

• Printer driver installed from the manufacturer’s site (not Windows generic)
• Paper size set to 4×6 inches or 100x150mm in the print dialog or application
• Orientation set to Portrait
• Scale set to 75% (for letter-size PDFs) or “Actual Size” (for native 4×6 PDFs)
• “Choose paper source by PDF page size” unchecked in Adobe Acrobat
• Paper guides adjusted snugly against the label roll
• Printer auto-calibrated (feed button at startup)
• Power cord fully seated (two-part cables on Vevor and similar models need a firm push)

Once all eight items are correct, the label should feed cleanly, print at the right size, and stop at the gap without wasting stock. If it still fails, the most stubborn fix is usually the printer driver — delete it, reboot, and install the exact model from the manufacturer’s download center.