PRINT / COMPARE / TROUBLESHOOT
Label Printer Test
Engineering preview: usable draft patterns, not a physically validated release. See validation limits.
Experimental P2 preview. Demand validation and physical printer acceptance are pending.
Choose the matching custom media in the printer driver, print at 100% / Actual size, and turn off browser headers/footers. A file cannot set or detect your hardware media automatically.
Choose a native label size
The Code 39 barcode contains TEST1. It is a scanner comparison only, not a shipping or product label. Scan results depend on the device and printing quality.
Copy a ZPL test sample
ZPL uses a separate Code 128 TEST1 sample. Choose the actual printer resolution before copying. This browser never sends commands to a device; do not use ZPL unless the exact model supports it.
Choose a resolution to prepare the test sample.
All native PDFs
- 4 x 6 in test label · native PDF
- 4 x 4 in test label · native PDF
- 2 x 1 in test label · native PDF
- 2.25 x 1.25 in test label · native PDF
Media and calibration checks
- Identify the exact model, supported label size and whether the roll uses gaps, black marks or continuous media.
- Load the roll and select its media/sensor type using that model’s official instructions.
- Use only the model’s documented calibration procedure, then compare a test at actual size. Stop for a jam, repeated feed error or unsafe condition.
Zebra model support
Find the exact model’s media and calibration guide. A support portal link is not a verified calibration sequence.
Zebra official supportRollo model support
Check the exact printer, compatible stock and label settings in official support. No universal button-hold sequence is provided.
Rollo official supportDYMO model support
Check the exact LabelWriter model and compatible label stock/software. Do not assume that it accepts ZPL or another brand’s roll.
DYMO official supportBarcode encoding constants: Copyright 2008 ZXing authors, Apache 2.0. No scanner or hardware certification is claimed.
Before you print again
Does requesting a print mean it printed?
No. The browser can request a dialog, but cannot tell whether you cancelled, sent the job or received paper. Check the preview and the physical result.
Why are there two paper sizes?
Each PDF has a native Letter or A4 page box. Choose the same size in the printer dialog, use Actual size / 100%, and disable headers, footers and Fit to page.
Can this sheet diagnose my printer?
It is a comparison aid. A generic sheet cannot identify a failed part, measure ink remaining, certify colors or replace the manufacturer's model-specific checks.