Question 1

Which barcode formats are recognized?

Accepted Answer

Most popular formats are supported: EAN, UPC, Code128, Code39, QR code, and others.

Question 2

Why isn't my code being recognized?

Accepted Answer

Make sure the image is sharp, the barcode isn't cropped at the edges, and there's enough lighting and contrast in the photo.

Question 3

Is the image uploaded anywhere?

Accepted Answer

No, decoding happens entirely in the browser using the ZXing library.

Question 4

Can it decode multiple codes in one image?

Accepted Answer

The tool decodes the first code it finds in the image; for multiple codes, upload separate images.

Question 5

Does it support scanning with a camera?

Accepted Answer

The current version only supports uploading an existing image file.

Barcode Reader

How to use it