GS1-128 Barcode Generator
GS1-128 encodes structured supply chain data. Use (01)xxx(17)yyy(10)zzz format, or concatenate with <FNC1> between variable-length AIs. Variable AIs like (21) serial number have a maximum of 20 characters.
Variable length code that can encode multiple GS1 data elements. Use (01)xxx(17)yyy format or concatenate with <FNC1>. Variable AIs like (21) serial max 20 chars.
What does this barcode do?
GS1-128 (formerly UCC/EAN-128) uses Code 128 symbology but encodes structured data via Application Identifiers (AIs). Each AI is a 2–4 digit code in parentheses followed by its value. Examples: (01) for GTIN-14, (17) for expiry date, (10) for batch/lot, (21) for serial number, (00) for SSCC. This allows cartons and pallets to carry GTIN plus batch, expiry, serial, and SSCC in a single, standards-compliant barcode.
Input format: use parentheses like (01)09506000134352(17)270531(10)LOT-123. For compact input with variable-length AIs, use <FNC1> to separate segments. Variable-length AIs such as (10), (21), (22) have a maximum of 20 characters each. GS1-128 is required by many retailers and distributors for carton and pallet labels.
FAQ
- What is GS1-128?
- GS1-128 encodes multiple GS1 Application Identifiers (AIs) like batch, expiry, SSCC, and serial numbers.
- What data can GS1-128 encode?
- Common elements: GTIN (01), batch (10), best-before (15), expiry (17), SSCC (00), serial (21). Variable AIs like (10), (21), (22) max 20 chars.
- GS1-128 vs Code 128?
- Both use Code 128 symbology. GS1-128 adds AI parentheses, FNC1 separators, and defined data structure for supply chain. Code 128 encodes plain text with no AI rules.
Other Common Barcode Types
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