About Code 128 Alphanumeric Barcode Generator
Generate compact, high-density Code 128 barcodes capable of encoding all 128 ASCII characters (uppercase, lowercase, numbers, punctuation, and control codes). The gold standard for shipping labels and internal inventory.
Key Capabilities & Features
- Encodes full 128 ASCII character set (letters, numbers, and symbols)
- Highest data density of any 1D barcode standard
- Adjustable bar height and bar width for thermal label printers
- Printable multi-label sheet generator
How to Use Code 128 Alphanumeric Barcode Generator
1
Enter Text / SKU
Type any alphanumeric tracking number, SKU, or serial ID.
2
Adjust Dimensions
Select bar width and height matching your thermal printer.
3
Export Vector SVG
Download the vector graphic for label software or print directly.
Privacy & In-Browser Execution Guarantee
All serial numbers and inventory asset tags are generated privately in your browser.
Frequently Asked Questions
Why choose Code 128 over Code 39?
Code 128 encodes twice as much data in the same horizontal space and supports both uppercase and lowercase letters.
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