Imports willnorris.com/go/gifresize github.com/disintegration/imaging github.com/gregjones/httpcache github.com/muesli/smartcrop github.com/rwcarlsen/goexif/exif golang.org/x/image/tiff golang.org/x/image/webp willnorris.com/go/imageproxy/third_party/http Standard library imports bufio bytes crypto/hmac crypto/sha256 encoding/base64 fmt image image/gif image/jpeg image/png io io/ioutil log math net/http net/url regexp strconv strings time