Different Types of Barcodes Explained: UPC, EAN, Code 128 & More

Barcodes are everywhere—from retail stores and shipping labels to inventory systems and digital payments. While most people recognize a barcode, few understand that there are different types of barcodes, each designed for a specific purpose.

If you’re using a barcode scanner or barcode generator, choosing the correct barcode format is essential. This barcode scanner guide explains the most common barcode types, how they work, and when to use each one.

What Is a Barcode?

A barcode is a visual representation of data that can be read using a barcode scanner. It encodes information such as product numbers, pricing, or tracking details.

Barcodes fall into two main categories:

• linear barcodes

• 2D barcodes

Understanding these categories helps you select the best barcode type for products and systems.

UPC Barcode (Universal Product Code)

The UPC barcode is one of the most widely used barcode formats for retail, especially in the U.S. and Canada.

Key Features of the UPC barcode

• 12 numeric digits

• Designed for consumer goods

• Compatible with retail barcode scanners

Common use cases

• Grocery products

• Retail packaging

• Point-of-sale systems

If you sell physical products in stores, the UPC barcode is usually required.

EAN Barcode (European Article Number)

The EAN barcode is an international retail barcode standard.

Key Features of the EAN barcode

• EAN-13 and EAN-8 formats

• Global compatibility

• Works with UPC scanners

Common use cases

• International retail

• E-commerce products

• Global supply chains

The EAN barcode is ideal for selling products worldwide.

Code 128 Barcode

The Code 128 barcode is a high-density barcode used for complex data.

Key Features of the Code 128 barcode

• Alphanumeric encoding

• Compact size

• High data capacity

Common use cases

• Shipping labels

• Warehouse inventory

• Logistics tracking

The Code 128 barcode is widely used in business and logistics environments.

Code 39 Barcode

Code 39 barcodes are simple, readable, and reliable.

Key Features of Code 39

• Alphanumeric characters

• Easy to scan

• Requires more space

Common use cases

• Asset tracking

• Automotive industry

• Government systems

Code 39 is useful when readability is more important than compact size.

QR Codes (2D Barcodes)

QR codes are one of the most popular 2D barcodes today.

Key Features of QR codes

• Stores URLs, text, and data

• Scannable by smartphones

• Error correction built in

Common use cases

• Marketing campaigns

• Digital menus

• Payment systems

QR codes are ideal for fast access and high data storage.

Data Matrix Barcodes

Data Matrix barcodes are compact 2D barcodes used in regulated industries.

Key Features

• Extremely small size

• High data density

• Reliable even when damaged

Common use cases

• Healthcare

• Electronics

• Small product labeling

Data Matrix is often the best barcode type for products with limited space.

1D vs 2D Barcodes

Understanding barcode standards helps ensure compatibility and accuracy.

How to Choose the Right Barcode Type

When choosing between barcode types explained in this guide, consider:

• Industry requirements

• Data capacity

• Scanner compatibility

• Label size

Choosing the right barcode prevents scanning errors and compliance issues.

Generate and Scan Barcodes Easily

Modern barcode generator tools and barcode scanner apps allow you to:

• Create UPC barcodes, EAN barcodes, Code 128 barcodes, and QR codes

• Scan barcodes instantly

• Meet global barcode standards

Final Thoughts

Understanding types of barcodes helps businesses operate more efficiently. Whether you need a UPC barcode for retail, a Code 128 barcode for logistics, or QR codes for digital use, selecting the correct barcode format matters.

With the right barcode generator and barcode scanner, barcode management becomes accurate, scalable, and reliable.