Question 1

What is a UPC-A barcode?

Accepted Answer

UPC-A (Universal Product Code, 12 digits) is the retail barcode standard in the US and Canada. It's a subset of EAN-13 with an implied leading zero, so UPC-A barcodes scan correctly on EAN-13 systems worldwide.

Question 2

Do I need a manufacturer ID to generate a real UPC-A?

Accepted Answer

For retail distribution: yes — you need a GS1 US Company Prefix that becomes the first 6-10 digits of your UPC. For internal use (warehouse, asset tags, prototype), any 11-digit number generates a scannable code, but it won't be unique globally.

Question 3

What does the 12th digit mean?

Accepted Answer

It's a check digit calculated from the first 11. Enter just 11 digits and JsBarcode adds the check digit. Enter 12 and the tool validates that the last digit matches what should be calculated.

Question 4

Will this scan at US grocery and big-box stores?

Accepted Answer

Yes — UPC-A is the dominant scan format at every US retailer. Generated barcodes are spec-compliant. As always, print at 100% scale with a quiet zone of at least 3 mm on each side; never resize a printed barcode by stretching it.

Question 5

UPC-A vs EAN-13 — which should I pick?

Accepted Answer

Pick UPC-A if your products sell in the US or Canada — the format is shorter (12 digits vs 13) and is what your retailer expects. Pick EAN-13 for worldwide retail. Both are recognized by modern POS systems, so it's mostly about matching the regional standard.

Question 6

Can I download as SVG for packaging artwork?

Accepted Answer

Yes — SVG is the recommended download format for packaging because it scales without quality loss. PNG is fine for screens and quick test prints.

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