gozxing A Barcode Scanning/Encoding Library for Go

ZXing is an open-source, multi-format 1D/2D barcode image processing library for Java. This project is a port of ZXing core library to pure Go.

Porting Status (supported formats)

2D barcodes

1D product barcodes

1D industrial barcode

Special reader/writer

Usage Examples

Scanning QR code

package main

import (
    "fmt"
    "image"
    _ "image/jpeg"
    "os"

    "github.com/makiuchi-d/gozxing"
    "github.com/makiuchi-d/gozxing/qrcode"
)

func main() {
    // open and decode image file
    file, _ := os.Open("qrcode.jpg")
    img, _, _ := image.Decode(file)

    // prepare BinaryBitmap
    bmp, _ := gozxing.NewBinaryBitmapFromImage(img)

    // decode image
    qrReader := qrcode.NewQRCodeReader()
    result, _ := qrReader.Decode(bmp, nil)

    fmt.Println(result)
}

Generating CODE128 barcode

package main

import (
    "image/png"
    "os"

    "github.com/makiuchi-d/gozxing"
    "github.com/makiuchi-d/gozxing/oned"
)

func main() {
    // Generate a barcode image (*BitMatrix)
    enc := oned.NewCode128Writer()
    img, _ := enc.Encode("Hello, Gophers!", gozxing.BarcodeFormat_CODE_128, 250, 50, nil)

    file, _ := os.Create("barcode.png")
    defer file.Close()

    // *BitMatrix implements the image.Image interface,
    // so it is able to be passed to png.Encode directly.
    _ = png.Encode(file, img)
}