Code 128 Barcode Generator — Free & Instant
Code 128 is a high-density barcode that can encode letters, numbers, and special characters. Widely used in shipping labels, logistics, warehouse management, and inventory tracking systems worldwide.
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Frequently Asked Questions
Everything you need to know about code 128 barcode generator
Who Is This For
If you run shipping, warehouse, or dispatch operations, you often need barcodes that can hold more than just a numeric item code. This page lets you generate compact Code 128 barcodes that encode SKUs, location codes, batch numbers, or short text — any combination of letters, digits, and symbols — in a single scannable symbol.
Code 128 is built for logistics teams, warehouse managers, and operations leads who want to clean up handwritten labels and move to consistent, machine-readable codes on shelves, cartons, and internal documents. A single Code 128 barcode on a warehouse bin label can encode the zone, aisle, rack, and bin position in one scan, letting your WMS or spreadsheet update stock location instantly.
For retail products that will be sold at checkout counters, EAN-13 is the correct format. But for everything behind the scenes — raw materials, components, work-in-progress, tools, equipment, and logistics units — Code 128 is the right choice. After generating your Code 128 barcodes, use Labeliy's label maker to print them on bin labels, shelf tags, carton labels, or inventory stickers in the exact size you need.
Why You Need Barcodes
- Code 128 supports letters and numbers, so you can encode human-readable SKUs like 'TSHIRT-M-BLK-42' directly into the barcode without compression.
- One scan can carry enough information for your WMS or spreadsheet to update stock, location, and batch in a single action.
- Standardizing on Code 128 eliminates handwriting on cartons and makes it easy to plug in any off-the-shelf barcode scanner.
- Variable-length encoding means a single Code 128 standard covers short order numbers and long alphanumeric serial strings alike.
Step by Step
- 1Decide what you want to encode — typically SKU, bin code, or shipment ID — and define a consistent pattern such as 'BIN-SKU-BATCH'.
- 2Enter the string into the generator, keeping it reasonably short (under 48 characters) for reliable scanning at normal distances.
- 3Generate the barcode and test it with your existing scanner app or gun to ensure it reads cleanly into your system.
- 4Print and stick the labels on shelves, cartons, or pallets, and train your team to scan instead of writing by hand.
Pro Tip
Add a simple prefix like 'B-' for bins, 'C-' for cartons, and 'P-' for pallets in your Code 128 values so your software can instantly understand what type of item was scanned without a separate lookup.