GUIDE

Barcode Basics

Understand EAN, UPC, Code 128 and Code 39 and when each format is commonly used.

EAN and UPC

EAN-13 and UPC-A are common retail barcode formats. They are designed for products and point-of-sale workflows where compatible numbers and printing standards matter.

Code 128

Code 128 is a high-density format used widely for logistics, labels and internal identification. The receiving system should determine which symbology is appropriate.

Code 39

Code 39 is an older alphanumeric symbology still used in some industrial and identification systems.

Tip: Use our free tools to test your code, then scan the final version before sharing or printing it.