Barcode Generator

Create EAN, UPC, Code 128 and other retail barcodes.

Barcode symbology

Value to encode

Enter 12 digits and the check digit is added, or 13 to supply your own.

Bar width2px

Height80px

Show the value below the bars

Use SVG for print — the bars stay perfectly sharp at any size, which matters because most scanning failures come from low print resolution or a missing quiet zone.

What does Barcode Generator do?

Generate standards-compliant barcodes in the common retail and logistics symbologies. Check digits are calculated automatically for EAN and UPC, and invalid input is rejected rather than producing an unscannable image.

How to Use Barcode Generator

1
Choose a symbologyEAN-13 for retail, Code 128 for internal logistics.
2
Enter the codeCheck digits are added automatically where required.
3
Adjust the sizeBar width and height affect scannability.
4
DownloadSVG for print, PNG for screen.

Key Features

EAN-13, EAN-8, UPC-A, UPC-E, Code 128, Code 39, ITF-14, MSI and Pharmacode
Check digits calculated and validated automatically
Adjustable bar width, height, font and margins
PNG and SVG download, with SVG recommended for print
Clear errors when input does not fit the chosen symbology

Frequently Asked Questions

Which barcode type should I use?

EAN-13 for retail products outside North America, UPC-A inside it, ITF-14 for shipping cartons, and Code 128 for internal tracking where you control both ends. Code 39 is older and less dense but very widely readable.

Can I invent my own EAN number?

Not for retail sale. EAN and UPC numbers are allocated by GS1, and retailers verify them. Making one up risks colliding with a real product. For internal use, Code 128 has no registration requirement.

What is a check digit?

A final digit calculated from the others so scanners can detect a misread. EAN-13 uses a weighted sum modulo 10. This tool computes it for you, and flags a mismatch if you supply one.

Why will my printed barcode not scan?

Usually it is too small, printed at low resolution, or lacks the quiet zone of blank space at each end. Use the SVG output so bars stay crisp, and keep the contrast high — black on white scans best.

Runs in your browser

Everything is generated in your browser. Nothing is sent to a server, so results are private and the tool keeps working offline.

How the rest of the site handles data