How to Create a Barcode Online for Products, Inventory, and Logistics

Barcodes form the backbone of modern supply chain, retail, and inventory management. An incorrectly formatted barcode leads to non-scanning errors at point-of-sale registers or logistics hubs. ### Selecting the Right Symbology 1. **Code 128**: High-density alphanumeric format for logistics shipping tags, warehouse locations, and serial numbers. 2. **EAN-13 / UPC-A**: The global 13-digit standard for retail point-of-sale scanning. 3. **GS1 DataMatrix**: A compact 2D matrix symbol that can encode GTIN and attributes such as manufacturing date, expiration date, lot, and serial number. Its physical size is determined by the data, X-dimension, and the application-specific GS1 specification—not by a universal 10x10 mm minimum. --- ### Generating Barcodes in UDImaker Select *"GS1 DataMatrix"* or *"Barcode"* from the drawing tool panel in UDImaker. Enter your data string; the rendering engine calculates exact module widths (X-dimension) and human-readable formatting automatically.