troubleshooting guide
Fix shopify label prints sideways and tiny on thermal printer. Check scale, paper size, margins, orientation and barcode whitespace before reprinting.
Best next step
Start with the tool or template that matches this guide before printing paid postage again.
Last reviewed: 2026-06-15
Select Shopify's Thermal 4 × 6 / 100 × 150 mm / A6 paper format, then match the printer driver to the same media. Sideways output is an orientation or format mismatch; close the print popup, choose the correct label size, and reprint instead of rotating a screenshot.
Symptom-led fix
Follow the symptom that best matches your bad print. Each step points to the safest next tool before you buy postage again.
A full Letter or A4 page is being fitted onto one 4×6 thermal label.
Inspect the PDF page box. Get the issuer's 4×6 format or extract only a complete label area; do not enlarge the miniature output.
Inspect the PDF pageA true 4×6 source prints proportionally smaller on matching 4×6 media.
Confirm 4×6 in the driver, disable Fit, print one blank template, then calculate a correction only if the media path already matches.
Measure the scale errorThe label boundary is correct, but fine lines are fuzzy, gray or broken.
Treat this as print quality, not page scale. Test density, speed, media and printhead condition before another live label.
Run a print-quality testShopify currently lists Thermal 4 × 6 inch / 100 × 150 mm / A6 for label printers. Choose that format in Shopify before changing driver rotation or scale.
Select the same physical media in the printer driver and check that the preview shows one portrait label on one sheet. Disable a saved Letter/A4 or photo preset that rotates the label across the roll.
Shopify's troubleshooting guide says that while on the Print shipping label page you can close the initial popup, select the correct label size from the dropdown, and click Print shipping labels again.
Shopify supports reprinting shipping documents. Print one corrected label and confirm the barcode, tracking number, address and service marks are sharp and complete before printing up to the documented bulk limit.
This page is a practical print-setting checklist, not official carrier policy or a promise that a label will be accepted.
Confirm the current format in your platform or carrier account, keep the original PDF, and stop if a test print is cropped, blurred or incorrectly scaled.
Troubleshooting advice is general. Record the printer model, paper size, PDF viewer and scale setting so you can verify each change.
Shopify currently lists Thermal 4 × 6 inch / 100 × 150 mm / A6.
The Shopify paper format, source orientation or printer-driver media likely does not match the thermal roll.
Close the initial print popup, select the correct label size from the dropdown, and click Print shipping labels again.
No. Reprint the original Shopify label in the matching format so the barcode is not resampled.
Yes. Shopify's help page says shipping labels and documents can be reprinted.
Fix cut-off, sideways and scaled Shopify shipping labels.
Match Shopify label format to printer media.
Print Shopify thermal-size labels on Letter or A4 safely.
Check paper, scale and orientation before printing.
Download a blank 4×6 shipping label template.
Fix tiny labels, scaling problems and bad print settings.