Matching Sox Codes
YOU'RE HEREQR, UPC, EAN and Code 128 generators.
BARCODES · CODE 128
Code 128 barcode generator
Code 128 is the workhorse of modern labelling. It encodes the full set of keyboard characters, packs digits compactly, and is read by practically every handheld and fixed barcode scanner. Asset tags, bin locations, work orders, and internal shipping labels are all good fits.
Free forever. No signup. No watermark. Files never leave your device.
About this tool
Matching Sox Codes offers Code 128 in automatic mode plus the three explicit subsets, so you can match what a system or specification demands. The barcode is drawn on your device in your browser and never uploaded.
Free, no signup, no watermark. Processing happens on your device in your browser — nothing is uploaded.
How to do it
- Open the barcode generator with Code 128 (auto) selected.
- Type your value — letters, numbers, and symbols are all fine.
- If a spec requires a particular subset, switch to Code 128-A, 128-B, or 128-C.
- Tune the bar width and height for your label size, and choose whether to print the value beneath the bars.
- Download SVG for label software and print, or PNG for documents.
- Print a test label and scan it with your own scanner.
Auto vs. A, B and C
- Auto picks the most compact encoding for your value. Use it unless you have a reason not to.
- 128-A covers uppercase letters, digits, and control characters.
- 128-B covers standard keyboard text, including lowercase.
- 128-C encodes digits in pairs, so it needs an even number of digits — add a leading zero if yours is odd. It is the most compact choice for long numbers.
Related tools
Barcode generator (all formats) · Code 39 barcode · ITF (Interleaved 2 of 5) barcode
Frequently asked questions
What can a Code 128 barcode contain?
In auto or 128-B mode, standard keyboard text: upper and lowercase letters, digits, and symbols. 128-C is digits only, in pairs.
Why does 128-C say it needs an even number of digits?
128-C stores two digits per symbol. Add a leading zero to an odd-length number.
Is the check character handled?
Yes. Code 128's built-in checksum is part of the generated barcode automatically.
Is it free and private?
Yes. Free, no signup, no watermark, and generated on your device. Download PNG or SVG.
More guides
Step-by-step pages for every job Matching Sox Codes handles. Each one opens the tool set up for that job.
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