qrcode

go-qrcode

Golang library to generate QR code

Getting started

Import

To import the library add the following import to your code.

import "github.com/nishant8887/go-qrcode"

Create a new QR code

Creating a new QR code is very simple.

code, err := qrcode.New("HELLO WORLD", qrcode.Q)
if err != nil {
    return err
}

Get code matrix

Get the 2D boolean array representing QR code.

m := code.Matrix()

Get code image

Get the image form of QR code.

imageFile, err := os.Create("image.png")
if err != nil {
    return err
}

img := code.Image()
err := png.Encode(imageFile, code.Image())
if err != nil {
    return err
}

Tools

Go-qrcode provides handy command line tool.

• qrgenerate - Generates QR code image from text

go install github.com/nishant8887/go-qrcode/cmd/qrgenerate
qrgenerate --help

Links

• Nice tutorial for QR code reference
• Guide for creating a QR code