Generate a UPC barcode:

Generate a QR barcode:

Generate a QR barcode of the specified size:

Generate a UPC barcode from a 12-digit numerical code:

With an 11-digit code, the checksum is automatically computed:

Generate an EAN-8 barcode:

With a 7-digit code, the checksum is automatically computed:

Generate an EAN-13 barcode from a 13-digit numerical code:

With a 12-digit code, the checksum is automatically computed:

Generate a Code 39 barcode from numerical digits:

Generate a Code 39 barcode from an alphanumeric string:

Generate a Code 128 barcode:

Generate an ITF barcode:

Generate a Codabar barcode:

Generate an Aztec code:

Generate a Data Matrix code:

Generate a QR code:

Generate a QR code with "M" error correction level:

Generate a PDF 417 code:

Encode a URL in a Code 39 barcode:

Encode graphics in a QR code:

Decode and evaluate the expression:

Add a QR code to a plot as an visual watermark:

Decode the QR code:

Use BarcodeRecognize to convert a barcode image to a string:

Compute the UPC-A checksum from an 11-digit code:

The checksum is automatically computed if not provided and used as the 12th digit:

Compute the EAN-8 checksum for a 7-digit code:

BarcodeImage automatically computes the checksum:

Compute the EAN-13 checksum for a 12-digit code:

BarcodeImage automatically computes the checksum:

In generating 1D barcode images, the width specification might be ignored:

The resulting width is the minimum required to represent the barcode image:

In generating 2D barcode images, the size specification might be ignored:

Different formats have requirements for the input string, including length and supported characters:

For formats with a checksum character, an incorrect checksum is replaced with the correct value:

PDF417 barcodes can only be generated with error correction level of 2:

Create two barcode images and color them based on the dominant colors of the US flag:

Compose barcode images to create a “barcoded” US flag: