Bulk Generate GS1-128 Barcodes
Learn how to generate thousands of complex GS1-128 logistics barcodes in bulk. Encode SSCC, batch numbers, and expiration dates instantly.
Dynamic Supply Chain Data
When operating a large-scale supply chain, tracking pallets and shipping containers requires more than just a simple product ID. You need to encode dynamic data like the Serial Shipping Container Code (SSCC), Batch/Lot numbers, expiration dates, and net weight.
The global standard for this is the GS1-128 barcode (formerly UCC-128). It uses Application Identifiers (AIs)—such as (00) for SSCC or (10) for Batch Number—to chain multiple disparate pieces of data into a single, highly dense barcode.
Automating Label Generation
Manually configuring the invisible FNC1 control characters required for GS1 compliance for hundreds of shipping labels every day is impossible. A bulk GS1-128 barcode generator automates this entirely.
Using a Bulk Barcode Generator simplifies the logistics workflow:
- Format your shipping manifest in Excel, concatenating your AIs and data strings (e.g.,
(00)123456789012345675(15)251231). - Paste the thousands of rows directly into the bulk generator.
- Select "GS1-128" as the symbology. The software automatically handles the FNC1 character injection.
- Download a ZIP file containing every barcode as a high-resolution PNG image.
Thermal Printer Ready
The resulting high-contrast image files are perfect for sending to your high-speed thermal label printers (like Zebra, Sato, or Rollo). These printers will rapidly spool out the continuous roll of paper sticker labels, ready to be slapped onto pallets heading out of the loading dock.
Understanding GS1 Application Identifiers (AIs)
The power of GS1-128 lies in its standardized Application Identifiers (AIs). These two-, three-, or four-digit prefixes tell barcode scanners exactly what data follows. When generating shipping labels in bulk, the most common AIs include:
| AI Prefix | Meaning | Format & Length | Example |
|---|---|---|---|
| (00) | SSCC (Serial Shipping Container Code) | 18 digits fixed | (00)001234567890123456 |
| (01) | GTIN (Global Trade Item Number) | 14 digits fixed | (01)10012345678905 |
| (10) | Batch or Lot Number | Up to 20 alphanumeric | (10)LOT-2026-X |
| (15) | Best Before Date (YYMMDD) | 6 digits fixed | (15)261231 |
| (3103) | Net Weight in Kilograms (3 decimals) | 6 digits fixed | (3103)001500 (1.5 kg) |
GS1-128 vs. Standard Code 128 vs. ITF-14
Shipping managers often ask when GS1-128 is required compared to other logistics barcode formats:
| Feature | GS1-128 | Code 128 (Raw) | ITF-14 |
|---|---|---|---|
| Standardization | Global GS1 standard | Proprietary / Internal | GS1 Outer Case |
| FNC1 Character | Mandatory leading FNC1 | None | N/A (Numeric only) |
| Multi-Data Chaining | ✅ Yes (multiple AIs) | ❌ Single string only | ❌ GTIN-14 only |
| Print Surface | Adhesive labels (4x6") | Labels or cards | Direct on Corrugated box |
| Major Users | Retail supply chain, Walmart, Amazon | Internal WMS tracking | Master carton packaging |
Thermal Shipping Label Best Practices (4x6 Inches)
To ensure 100% first-pass scan rates at distribution hubs and automated conveyor sortation systems:
- Printer Resolution: Use at least 203 DPI (dots per inch) for standard shipping labels. For labels containing small lot numbers or 2D companion codes, 300 DPI is recommended.
- Label Placement: Apply the GS1-128 label on the side of the shipping pallet or carton, between 400mm and 800mm from the base, and at least 50mm from any edge.
- Quiet Zones: Maintain a minimum 10x narrow-bar width (at least 7mm) clear blank margin on both the left and right ends of the barcode symbol.