Is my data uploaded to a server?

No. Everything runs locally in your browser using the JsBarcode library. No data ever leaves your device.

Which format should I use for retail products?

EAN-13 is the standard for retail products sold internationally. For the US and Canada, UPC-A (12 digits) is also widely used.

Why does EAN-13 say my value is invalid?

EAN-13 requires exactly 12 or 13 digits. Enter 12 digits and the check digit is computed automatically, or include all 13 digits with a valid check digit.

Can I use the generated barcode commercially?

The barcode image itself is just a visual encoding of your data. However, official GS1 barcodes for retail products require a registered GS1 company prefix — consult GS1 for commercial use.

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Barcode Generator

Generate barcodes in Code 128, EAN-13, EAN-8, UPC-A and other formats instantly. Download as SVG or PNG. Free, browser-based.

🖼️ Image Tools Free Browser-based

Tool

Barcode Value

Format

Bar Height (px)

Line Width

Font Size (px)

Background

Bar Colour

Show text below barcode

Barcode Formats Supported

Format	Characters	Common Use
CODE 128	All ASCII	Shipping, logistics, general purpose
EAN-13	13 digits	Retail products worldwide
EAN-8	8 digits	Small retail packaging
UPC-A	12 digits	US / Canada retail
UPC-E	6 digits	Compact UPC for small packages
CODE 39	Alphanumeric	Healthcare, defence, automotive
ITF-14	14 digits	Carton / case-level shipping

Tips for Valid Barcodes

EAN-13 requires exactly 13 digits and the last digit is a check digit — enter any 12 digits and the library computes it automatically. UPC-A requires 12 digits. CODE 128 accepts any ASCII string. If the value is invalid for the selected format an error will appear.

Barcode Generator

Barcode Formats Supported

Tips for Valid Barcodes

Frequently Asked Questions