Code 128 Barcode Generator

High-Density Alphanumeric Logistics Symbology (ISO/IEC 15417) (Standard: ISO/IEC 15417 / GS1-128)

What is Code 128 Barcode Generator?

Code 128 is a high-density, variable-length linear barcode symbology capable of encoding the entire 128 ASCII character set. It utilizes three character subsets (A, B, C) and includes an internal Modulo-103 check character to guarantee reliable data transmission across global logistics, supply chain, and packaging operations.

Technical Specifications

Classification1D Continuous Linear Symbology
CapacitéComplete 128 ASCII table (digits, letters, symbols, control codes)
Contrôle ChecksumMandatory internal Modulo-103 check character
Zones de SilenceMinimum 10 times narrow bar width (or at least 6.4 mm) on left/right margins
ApplicationsUniversal shipping containers, warehouse pallets, retail transport, GS1-128

Frequently Asked Questions

Can Code 128 encode lowercase letters and special characters?
Yes. Code 128 Subset B encodes both uppercase and lowercase letters (A-Z, a-z), numbers (0-9), and standard punctuation symbols.
What is the difference between Code 128 and GS1-128?
GS1-128 is an application standard based on Code 128. It uses the Function 1 Symbol Character (FNC1) to format data into standardized Application Identifiers (AIs).

Related Formats