#!/bin/bash

# Use google charts
zbarimg <(wget -qO - "https://www.google.com/chart?chs=200x200&chld=M|0&cht=qr&chl=STRING")

# Use qrencode like a normal person
printf 'STRING' | qrencode -t ansiutf8 # Ansi output
printf 'STRING' | qrencode -s 16 -o qr.png # .png file