Barcode, QR code and label-printing guides
Practical explanations for choosing formats, preparing files and fixing scanning problems.
CODE128 vs CODE39: which barcode should you use?
A practical comparison of CODE128 and CODE39 for warehouse labels, asset identification and internal tracking.
How to print sequential barcode labels from 1 to 100
Learn how to prepare a numbered barcode series, choose an A4 layout and test labels before bulk printing.
Why a barcode will not scan after printing
A troubleshooting guide for barcode contrast, margins, scaling, damage, printer quality and incompatible formats.
How to choose a QR code size for printing
Choose a practical QR code print size based on scanning distance, content, error correction and the printing material.
How to create and test a Wi-Fi QR code
Prepare a Wi-Fi QR code with the correct network name, password and security type, then test it safely before sharing.
PNG vs SVG for barcode and QR code labels
Understand the difference between PNG and SVG exports and choose the safer format for documents, labels and professional printing.