Code 128 Barcode Generator

Code 128 is a high-density linear barcode that encodes the full ASCII character set. It supports letters, numbers, and special characters. It is one of the most commonly used barcode formats in logistics and supply chain management.

Code 128A supports uppercase letters, numbers, and control characters. Code 128B adds lowercase letters. Code 128C encodes pairs of digits for high-density numeric data. Most scanners automatically switch between subtypes.

Code 128 has no fixed length limit. However, longer data creates wider barcodes. For practical scanning, keep data under 80 characters.

GS1-128 is a subset of Code 128 that follows GS1 standards for supply chain use. It uses Application Identifiers (AIs) to define data meaning. Not all Code 128 barcodes are GS1-128, but all GS1-128 barcodes use Code 128 encoding.

Yes. Code 128B supports both uppercase and lowercase letters, making it suitable for encoding mixed-case text, URLs, and serial numbers.

Any standard linear barcode scanner can read Code 128. Most USB, Bluetooth, and smartphone-based scanners support it out of the box.