Imports golang.org/x/image/bmp golang.org/x/image/tiff golang.org/x/image/webp github.com/liyue201/goqr github.com/makiuchi-d/gozxing github.com/makiuchi-d/gozxing/multi/qrcode Standard library imports bytes fmt image image/gif image/jpeg image/png io/ioutil os strings