Barcode production guide

What is a barcode check digit?

Why EAN, UPC and ITF codes use a final validation digit.

A check digit is calculated from the preceding digits and lets scanners detect common data-entry or reading errors. When supported, enter the data digits and let the barcode engine calculate the final digit.

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Use the same deterministic barcode engine described in this guide. Standard generation is free.

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Barcode settings

SymbologyBarcode value

Size

Width 1-30Height 1-200DPI 72-800Margin 1-20

Human-readable text

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Advanced settings

Output

RotationFg colorBg color

Text above barcode

Text sizeText alignmentText colorFontPosition 0

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Text below barcode

Text sizeText alignmentText colorFontPosition 0

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Current symbology: ean13

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