Barcode Symbologies: Code 128, Data Matrix, EAN—Which to Use When

Choosing the right barcode type matters for readability, space, and compliance. Here is a concise guide to common symbologies and when to use them.

• •Code 128 – Full ASCII, compact. Good for shipping labels, internal IDs, and variable-length data. Widely supported.
• •Code 39 – Alphanumeric, legacy use. Still used in healthcare and logistics where required.
• •EAN-13 / UPC-A – Retail product identification. Required for retail in many regions. Fixed length.

• •Data Matrix – Small footprint, high data density. Used in manufacturing, healthcare, and small items. Resilient to damage.
• •PDF417 – Stacked linear. Used for IDs, travel documents, and when more data than Code 128 is needed in a linear-like shape.
• •QR Code – Familiar for consumers. Good for links, payloads, and marketing. See our custom QR code engine for high-throughput or custom QR needs.

Match the symbology to your industry (retail → EAN/UPC; logistics → Code 128; small parts or healthcare → Data Matrix) and to your print and scan environment. At Hendoi we build custom barcode engines for USA, Canada, and Chennai. Contact us for a technical consultation and quote.