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We read every message. For the fastest help with a code that will not scan, include the format (for example EAN-13 or QR code), the value you entered and the device or scanner you used.

Bug reports & feature requests

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Source code

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Before you write

  • Barcode not accepted by a retailer? EAN and UPC numbers must be licensed from GS1. Read how to get a barcode for your product.
  • QR code hard to scan? Check size, contrast and quiet zone in our QR code size guide.
  • A batch of codes did not download? Re-run it from the Bulk Studio; the results manifest lists every row that failed validation.