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Barcode Generator

Generate professional barcodes online for products and inventory management with support for EAN-13, UPC-A, Code128, and Code39 formats. Create scannable barcodes for retail products, warehouse inventory, shipping labels, and asset tracking with customizable sizes, instant downloads, and print-ready quality for business and e-commerce applications.

How to Use the Barcode Generator

Use the Barcode Generator to professional barcodes online for products and inventory management with support for EAN-13, UPC-A, Code128, and Code39 formats. Create scannable barcodes for retail products, warehouse inventory, shipping labels, and asset tracking with customizable sizes, instant downloads, and print-ready quality for business and e-commerce applications.. Enter your values to get accurate, instant results tailored to your situation.

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Common Uses

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Complete Guide to Barcodes

Everything you need to know about barcode types, standards, and usage

Expert Tips

Essential Fundamentals — Core concepts for barcode generation and use

Barcode Types and Uses

Getting Official Barcodes

Barcode Size and Printing

Advanced Strategies — Professional barcode implementation

Barcode Scanning Technology

Barcode Data Encoding

Inventory and Retail Integration

Common Mistakes

Frequently Asked Questions

Which barcode format should I use?
EAN-13: Retail products in Europe/International (13 digits). UPC-A: Retail products in US/Canada (12 digits). Code 128: Shipping labels, logistics, alphanumeric data. Code 39: Inventory, asset tracking, non-retail. EAN-8: Small packages with limited space. Choose based on industry standards and data requirements.
How do I get a valid UPC or EAN code?
Official codes: Purchase from GS1 (global barcode authority). Cost: $250+ initial, annual renewal fees. Includes company prefix + unique product numbers. Resellers: Buy single codes cheaper ($2-50) but not GS1-certified. Risk: May not work with major retailers. For testing only: Use GS1 prefix 02 or generate random (not for commercial sale).
What size should I print barcodes?
Minimum size: 1.5" wide × 1" tall (EAN/UPC) for reliable scanning. Recommended: 2" × 1.2" for retail. Maximum: 200% of minimum (3" wide). Resolution: 300 DPI for printing. Include quiet zones: 0.25" white space on sides. Too small = scan failures. Test print and scan before mass production.
Can I use these barcodes for commercial products?
Testing/Internal use: Yes, free to generate and use. Retail sale: You need valid GS1 company prefix and registered product codes. Major retailers (Amazon, Walmart, Target) require GS1-certified UPC/EAN codes. Small businesses/online only: May accept reseller codes but verify first. Never use random numbers for products you sell.