barcode

Barcode generation library for Dart that can generate generic drawing operations for any backend.

• If you are looking to print barcodes, use pub:pdf.
• If you want to display barcodes in a Flutter application, use pub:barcode_widget.
• To generate SVG barcodes see the example tab.
• To generate barcodes in images, use pub:barcode_image.
• Live example with Flutter Web: https://davbfr.github.io/dart_barcode/

They all use this library to generate the drawing operations.

Interactive demo: https://davbfr.github.io/dart_barcode/

This library is the base to create flutter widgets or pdf barcodes. It depends only on dart with no platform-dependent implementation.

Only two basic drawing primitives are required:

• Filled rectangle to draw the bars
• Text drawing to display the code in full-text

Generate barcodes

// Create a DataMatrix barcode
final dm = Barcode.dataMatrix();

// Generate a SVG with "Hello World!"
final svg = bc.toSvg('Hello World!', width: 200, height: 200);

// Save the image
await File('barcode.svg').writeAsString(svg);

Create a WIFI configuration barcode:

// Create a DataMatrix barcode
final dm = Barcode.dataMatrix();

final me = MeCard.wifi(
  ssid: 'Wifi Name',
  password: 'password',
);

// Generate a SVG with a barcode that configures the wifi access
final svg = bc.toSvg(me.toString(), width: 200, height: 200);

// Save the image
await File('wifi.svg').writeAsString(svg);

Supported barcodes

The following barcode images are SVG. The proper rendering, especially text, depends on the browser implementation and availability of the fonts.

1D Barcodes

Code 39

Code 93

Code 128 A

Code 128 B

Code 128 C

GS1-128

Interleaved 2 of 5 (ITF)

ITF-14

ITF-16

EAN 13

EAN 8

EAN 2

EAN 5

ISBN

UPC-A

UPC-E

Telepen

Codabar

Height Modulated Barcodes

RM4SCC

POSTNET

2D Barcodes

QR-Code

PDF417

Data Matrix

Aztec