Barcode generator

Create printable Code 128, EAN-13, and UPC-style barcode images.

Format

Value

Letters, digits, and symbols. Use it for labels and stock codes.

About Barcode generator

Barcode Generator encodes a value as a one-dimensional barcode in the symbology you pick, following that format's rules for length and check digits.

Runs entirely in your browser. Your files never leave your device.

1.Pick a symbology the receiving system accepts and check your value fits its character rules.
2.Generate it with enough bar width, height, contrast, and quiet space for the size it will be printed at.
3.Export and test the real thing, on screen and on paper, with the scanners that will read it.

Symbologies differ in allowed characters, density, check digits, and which industries use them.
Size and the printed text affect readability, but the quiet zone around the bars is not negotiable.

A valid barcode is not a registered product. It does not give you a GS1 company prefix.
Scaling, antialiasing, weak contrast, glossy stock, and tired printers all turn a correct barcode into an unreadable one.

Code 128 or EAN?

Whatever the receiving system requires. Code 128 suits flexible internal identifiers. EAN and UPC are regulated retail numbering.

Why does it scan on screen but not on paper?

Print scaling, ink spread, low resolution, glare, or a clipped quiet zone. The bar geometry has to survive printing.