store_image library

Classes

ImageInfo: What a screenshot has to satisfy, read straight out of the file header.
StoreImageRules: What one store accepts in the encoding of a listing image.

appStoreImageRules → const StoreImageRules: Apple, for every screenshot.
playIconImageRules → const StoreImageRules: Play's app icon, the exception in both directions: it is the one slot that asks for an alpha channel, and it is still 8 bits per channel.
playImageRules → const StoreImageRules: Play, for screenshots, the feature graphic and the TV banner — every slot this package checks but the icon. (Play's Android XR slot says only "PNG or JPEG"; nothing here uploads to it.)

imageEncodingProblem(ImageInfo image, StoreImageRules rules) → String?: What rules refuse about image's encoding, as a sentence to follow the file's name, or null when nothing does.
readImageInfo(List<int> bytes) → ImageInfo?: Dimensions, transparency and bit depth of a PNG or JPEG, or null if bytes is neither.