Imports github.com/rwcarlsen/goexif/exif golang.org/x/image/bmp golang.org/x/image/riff golang.org/x/image/tiff golang.org/x/image/vp8 golang.org/x/image/vp8l golang.org/x/image/webp Standard library imports bytes encoding/json fmt image image/gif image/jpeg image/png io os os/exec strconv time