Marcus Vance
Lead Software Architect & Tech Writer
Whether you are listing physical retail goods on Amazon, stocking boutique shelves, or labeling warehouse inventory, choosing the correct barcode symbology is essential. A miscalculated check digit can cause checkout scanner rejections and costly product recalls. Toolora's Barcode Generator supports all major 1D standards with automated check-digit validation and vector SVG exports.
In this article:
EAN-13 (European Article Number) consists of 13 numeric digits and is the dominant barcode across Europe, Asia, Latin America, and Australia. UPC-A (Universal Product Code) consists of 12 numeric digits and is standard across the United States and Canada.
Both standards employ a strict modulo-10 check digit at the end of the sequence. If you enter 12 digits into Toolora's EAN-13 generator, our client-side engine calculates the 13th check digit automatically, guaranteeing standard compliance.
Generate 13-digit European Article Number product barcodes with automatic modulo-10 check digit verification.
For tracking serial numbers, employee IDs, shipping containers, and pallet tags, Code 128 is the industry gold standard. It encodes all 128 ASCII characters with variable bar widths, achieving twice the data density of older standards like Code 39.
Code 39 remains widely used in automotive, defense, and healthcare due to its simplicity and support for uppercase letters and basic symbols.
Generate high-density universal alphanumeric Code 128 barcodes for logistics and shipping.
Generating standard-compliant retail and logistics barcodes is instant and completely free on Toolora. Export vector SVGs for crisp packaging labels or high-res PNGs for product packaging.
Explore our complete Barcode Tools suite today.
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Generate Code 128, EAN-13, UPC-A, Code 39, ITF-14, and ISBN barcodes with strict validation.
Generate 13-digit European Article Number product barcodes with automatic modulo-10 check digit verification.
Generate standard 12-digit Universal Product Code barcodes for North American retail.
Generate high-density universal alphanumeric Code 128 barcodes for logistics and shipping.
Batch generate multiple product barcodes from text lists and download as a ZIP file.
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