Barcode Generator

CODE128, almost every time. It encodes the full ASCII set, packs digits densely, and carries no registration requirement, so SKUs like WH-A3-0091 work as-is. Your scanner hardware almost certainly reads it out of the box.

EAN-13 expects exactly 12 digits, after which the check digit is calculated and appended for you. Letters, spaces, or a wrong digit count trigger the red error alert instead of rendering. Paste digits only and the preview comes back.

Yes. Enter the first 12 digits and the thirteenth is computed by the standard modulo 10 algorithm. Typing 590123412345 renders the complete number 5901234123457 under the bars, ready for packaging artwork.

UPC-A is 12 digits and rooted in North American retail; EAN-13 is 13 digits and used nearly everywhere else. EAN-13 is effectively a superset, since a UPC-A number with a leading zero reads as valid EAN-13. Modern scanners handle both without configuration.

The image itself is standards compliant, but retail requires the number inside it to be assigned through GS1, which licenses unique company prefixes. For anything scanned only inside your own building, no registration is needed and any numbering scheme you invent is fine.

For barcodes specifically, yes. Scanners measure the precise widths of bars and gaps, and rasterized images blur those edges when scaled. An SVG keeps the geometry exact at any print size, which is why this tool outputs vectors only.

CODE39 survives in older industrial and government systems that were built around it, though it encodes less per inch than Code 128. ITF14 is the standard for outer shipping cartons, where its fault tolerance suits corrugated cardboard printing.