Imports github.com/golang/freetype github.com/odeke-em/rsc/appfs/fs github.com/odeke-em/rsc/gf256 github.com/odeke-em/rsc/qr github.com/odeke-em/rsc/qr/coding github.com/odeke-em/rsc/qr/web/resize Standard library imports bytes crypto/md5 encoding/base64 encoding/json fmt html/template image image/color image/draw image/gif image/jpeg image/png io math/rand net/http net/url os sort strconv strings time