Barcode Types Explained
A complete guide to understanding different barcode formats and when to use them.
Choosing the right barcode format depends on what kind of data you need to store, how much space you have, and where the barcode will be scanned. This guide breaks down the most common barcode types.
1D Barcodes (Linear Barcodes)
1D barcodes represent data by varying the widths and spacings of parallel lines. They typically store smaller amounts of data (usually alphanumeric strings).
Code 128
Best for: General purpose, shipping, inventory management.
Code 128 is a highly versatile, high-density barcode that can encode all 128 ASCII characters (letters, numbers, and symbols). It's compact and very reliable, making it the standard choice for non-retail applications.
Code 39
Best for: Legacy systems, simple alphanumeric data.
Code 39 is older and less dense than Code 128. It only encodes uppercase letters, numbers, and a few special characters. It's often used in older inventory systems but is generally superseded by Code 128 for new implementations.
UPC-A & EAN-13
Best for: Retail products.
These are the standard barcodes you see on products in grocery stores. UPC-A (12 digits) is widely used in North America, while EAN-13 (13 digits) is the global standard. They encode numbers only.
ITF-14 (Interleaved 2 of 5)
Best for: Packaging and shipping cartons.
ITF-14 is used to mark cartons and pallets that contain products with UPC or EAN barcodes. It's designed to be printed easily on corrugated cardboard and only encodes numbers (in pairs).
2D Barcodes
2D barcodes encode data in a two-dimensional grid (using dots, squares, or other patterns). They can store much more data than 1D barcodes and often include error correction, meaning they can still be read even if partially damaged.
QR Code (Quick Response)
Best for: URLs, contact info, mobile scanning, complex data.
QR codes are everywhere. They can store thousands of characters, including URLs, text, and binary data. Because almost all modern smartphone cameras can read them natively, they are the go-to choice for consumer-facing applications.
Try generating different types of barcodes:
Open Barcode Generator