EAN / UPC Barcode Generator

Validate or compute the mod-10 check digit for EAN-13, EAN-8 and UPC-A (GTIN) codes, and render the actual bar pattern — start/center/end guards, A/B/C parity patterns per the GS1 standard — to a canvas you can download as a PNG. Everything is generated in your browser; nothing is sent anywhere.

Format

Code (enter 12 digits to compute, 13 to validate)

Result

Enter the data digits (without the check digit) to compute it, or the full code to validate. The check digit uses weighted mod-10 (digits in odd positions ×1, even positions ×3).

Barcode

Enter a code to render the barcode