Imports github.com/disintegration/imaging github.com/muesli/smartcrop github.com/muesli/smartcrop/nfnt github.com/rwcarlsen/goexif/exif golang.org/x/image/tiff golang.org/x/image/webp golang.org/x/text/unicode/norm willnorris.com/go/gifresize Standard library imports bytes crypto/sha512 encoding/base64 encoding/json errors fmt image image/gif image/jpeg image/png io io/ioutil log math net/http os path path/filepath strconv strings unicode