ImagePNG
module PNG_Zlib : sig ... end
module PNG_CRC : sig ... end
module ReadPNG : Image.ReadImage
module PngWriter : sig ... end
val write_png : ImageUtil.chunk_writer -> Image.image -> unit
val bytes_of_png : Image.image -> bytes
include module type of struct include ReadPNG end
val size : ImageUtil.chunk_reader -> int * int
val parsefile : ImageUtil.chunk_reader -> Image.image
val write : ImageUtil.chunk_writer -> Image.image -> unit