package epuboptions type Image struct { Crop Crop Quality int Brightness int Contrast int AutoContrast bool AutoRotate bool AutoSplitDoublePage bool KeepDoublePageIfSplit bool KeepSplitDoublePageAspect bool NoBlankImage bool Manga bool HasCover bool View View GrayScale bool GrayScaleMode int Resize bool Format string AppleBookCompatibility bool } func (i Image) MediaType() string { return "image/" + i.Format }