Code 128 Barcode Generator
Encode letters, numbers, and common symbols.
Barcode formats have different character, capacity, and check-digit rules. Generate, scan, and validate formats; conversion is not always lossless.
Code 128
Encode letters, numbers, and common symbols.
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How to generate a Code 128 barcode
Code 128 is a high-density linear barcode for inventory IDs, shipping references, and internal tracking. It supports the full ASCII character set and automatically chooses efficient code subsets. Enter the exact identifier that your system expects, keep adequate blank space around the bars, and verify the printed result with the scanner used in production.
Nothing you enter or upload is sent to a server, saved, or shared.
Use it in three steps
- Enter an inventory code or other ASCII identifier.
- Review the human-readable text and barcode preview.
- Copy the value or download PNG, SVG, or PDF for testing and print.
Practical example
Frequently asked questions
Does Code 128 need a check digit?
The symbol includes an internal checksum generated automatically.
Can it contain letters?
Yes. Code 128 supports letters, numbers, punctuation, and control characters.
Is it the same as EAN-13?
No. EAN-13 follows a fixed retail numbering format.