Code 128 Barcode Generator

Code 128 is the general-purpose barcode for text and IDs: shipping labels, warehouse locations, asset tags and serial numbers.

Value

Any printable ASCII text — letters, numbers, punctuation

Bar width2px

Height80px

Code 128 at a glance

Encodes: Any printable ASCII text: letters, digits, punctuation
Check character: Mod 103 — always added automatically, not printed
Used on: Shipping labels, logistics, inventory, GS1-128
Density: High — shorter than Code 39 for the same text

Good to know

→This generator uses Code Set B, which covers all printable ASCII characters. Need many at once? Switch to Bulk and download a ZIP.
→GS1-128 (formerly UCC/EAN-128) is Code 128 with a special start character and Application Identifiers like (01) for GTIN.
→The hidden check character makes misreads very unlikely, so no extra check digit is needed.

Frequently asked

Code 128 or Code 39 — which should I use?

Code 128 for anything new: it encodes lowercase and punctuation and is much more compact. Use Code 39 only when a system or industry standard requires it.

Can Code 128 encode numbers only?

Yes. Code 128 can pack digits in pairs (Code Set C) for an even shorter barcode; this generator uses Set B, which works for any text including numbers.