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