Before committing a barcode to packaging or labels, spend two minutes testing it. Here’s how.
Scan it with your phone
Install a free barcode/QR scanner app, then point it at the barcode on your screen or a printed sample.
A correct read returns the same digits you assigned — confirm them character by character.
Test the actual print
Screen scans aren’t enough — print a sample at real size and scan that too. Printing can shrink or blur bars.
Make sure the quiet-zone margins survived the print and the contrast is sharp.
Common failure causes
If it won’t scan: the image is too small, cropped quiet zones, low contrast, or low resolution. Fix the image and re-test.
Catching this now saves a costly reprint of thousands of labels.
Frequently Asked Questions
Can I test a barcode with my phone?
Yes — any free scanner app works.
Should I test the printed version too?
Definitely — printing can change size and clarity.
It scans on screen but not in print — why?
Usually size, contrast, or quiet-zone issues introduced by printing.
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