Code One generator
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About Code One
Code One is a 2D matrix symbology predating Data Matrix. It supports nine fixed versions and variable versions, but has largely been superseded.
Valid input
- Nine fixed versions (A-H) and variable versions S and T. S encodes a small numeric value; T is variable-width alphanumeric.
- Largely superseded by Data Matrix - prefer Data Matrix for new deployments.
Related barcode types
Guides
- How to Print Barcode Labels That Actually Scan
DPI, X-dimension, quiet zone, and the handful of print settings that decide whether your label works. A practical guide for anyone printing labels at real volume.
- Why Won't My Barcode Scan? A 7-Step Checklist
A checklist for diagnosing barcode scan failures, covering quiet zones, contrast, print resolution, physical damage, wrong symbology, check digits, and scanner distance.