Question 1

What is this barcode used for?

Accepted Answer

It is a standard retail barcode used to identify products at point of sale. It encodes a unique product identifier that barcode scanners can read instantly.

Question 2

How is the check digit calculated?

Accepted Answer

The check digit uses the standard weighted-sum algorithm: each digit is multiplied by alternating weights of 1 and 3, the products are summed, and the check digit rounds the total up to the next multiple of 10.

Question 3

Is this barcode valid for real products?

Accepted Answer

Barcodes generated here have correct structure and check digits, so they will scan. For commercial products you must use GS1-assigned prefixes.

Question 4

Can I print this barcode?

Accepted Answer

Yes. Export as SVG for unlimited resolution or PNG for quick use. Both formats are suitable for printing on labels and packaging.

Question 5

What is GTIN?

Accepted Answer

GTIN (Global Trade Item Number) is the umbrella term for GS1 product identifiers. GTIN-12 includes UPC-A, GTIN-13 includes EAN-13, and GTIN-14 includes ITF-14.

Question 6

What is the difference between GTIN and EAN?

Accepted Answer

GTIN is the modern GS1 term. EAN-13 is now called GTIN-13. They are the same barcode — the name changed, the numbers did not.

GTIN Generator

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