Barcode Generator

No. It draws barcodes for numbers you already have. To sell in shops that need EAN or UPC codes, you need a GS1 company prefix and numbers issued by GS1 or your local GS1 office. For your own stock, shelves or shipping, any Code 128 value works.

EAN-13 for retail products sold internationally, UPC-A for retail in the US and Canada, and Code 128 for internal SKUs, bin locations, shipping and anything with letters.

The last digit of an EAN or UPC number, worked out from the others so scanners can catch misreads. Enter 12 digits (EAN-13) or 11 digits (UPC-A) and it's added for you; enter the full number and it's checked.

Yes. Save your sheet as CSV and choose it under “CSV file”. Pick which columns hold the barcode, product name, SKU, price and number of labels. Rows that aren't valid are listed with the reason, and leading zeros are kept.

Choose the layout closest to your sheets, then print the calibration page on plain paper at 100% / Actual size. Hold it over a label sheet against a window and adjust the margins or gaps until the boxes line up.

The usual causes are bars printed too small, a missing blank margin (quiet zone) either side, “Fit to page” scaling, or low-contrast printing. Keep bars at least 0.25 mm wide, use the recommended quiet zone, print in black on white and test with the scanner you'll use.

UPC-A is the 12-digit barcode used in the US and Canada; EAN-13 is the 13-digit version used everywhere else. A UPC-A number is the same as an EAN-13 number with a 0 in front, and retail scanners worldwide read both, so use the number and format your GS1 office gave you.

SVG is a vector file, so it stays sharp at any size — best for packaging artwork and design software. PNG is an image exported at 300 dpi, handy for documents and label programs that don't take SVG. For a list or CSV, “ZIP of all” gives you both for every code.

Click “Verify scan”. The tool exports each barcode as a PNG and reads it back with an independent decoder (ZXing), then tells you which, if any, didn't decode to the right value. Still test a printed copy with your own scanner, since printing and label size matter too.

Here, up to 80 characters of standard ASCII — letters, digits, spaces and common symbols, but no accented letters or emoji. The longer the value, the wider the barcode, though runs of digits are packed two to a symbol, so numbers stay narrower than text of the same length.

No. Barcodes, label sheets and ZIP files are all made in your browser, and nothing is uploaded or stored.