About the Code 128 Generator
Code 128 is one of the most widely used barcode formats because it can encode the full ASCII character set in a dense, space-efficient pattern. That flexibility makes it the default choice for SKUs, serial numbers, tracking labels and internal asset tags where both letters and numbers are needed.
Type any value and the Code 128 barcode renders instantly with a readable caption. Unlike fixed-length retail codes, Code 128 accepts variable-length input, so it adapts to whatever identifier you use. Everything is generated locally and exports to a crisp SVG for printing or a PNG for digital use.
How to use the Code 128 Generator
- 1Enter the text or number you want to encode.
- 2Review the rendered Code 128 barcode.
- 3Download as PNG or SVG for your label or system.
Key benefits
- Encodes letters, numbers and symbols (full ASCII).
- Compact, high-density output.
- Variable length — fits any identifier.
- Export PNG or SVG, fully private.
Real-world examples
Warehouse SKU
Encode an alphanumeric SKU for shelf and bin labels.
Asset tag
Generate a Code 128 tag for IT or equipment tracking.
Frequently asked questions
What can Code 128 encode?+
Any ASCII characters — uppercase, lowercase, digits and symbols — at variable length.
Why choose Code 128 over EAN/UPC?+
Use Code 128 for internal/logistics identifiers that include letters or vary in length; use EAN/UPC only for retail products.
Is the barcode high enough quality to print?+
Yes — export the SVG and it prints sharply at any size.