Added option to save as PNG

Sources/Options.swift

@@ -9,13 +9,21 @@
 import Foundation
 
 public struct Options {
+
+    public enum UIKitImageFormat {
+        case png
+        case jpg
+    }
+
     /// By default, files are saved into searchPathDirectory/folder
     public var searchPathDirectory: FileManager.SearchPathDirectory
     public var folder: String = (Bundle.main.bundleIdentifier ?? "").appending("/Default")
 
     /// Optionally, you can set predefined directory for where to save files
     public var directoryUrl: URL? = nil
 
+    public var uiKitImageFormat: UIKitImageFormat = .jpg
+
     public var encoder: JSONEncoder = JSONEncoder()
     public var decoder: JSONDecoder = JSONDecoder()
 

Sources/Storage+Image.swift

@@ -15,7 +15,7 @@
 public extension Storage {
     func save(object: Image, forKey key: String) throws {
         try commonSave(object: object as AnyObject, forKey: key, toData: {
-            return try unwrapOrThrow(Utils.data(image: object), StorageError.encodeData)
+            return try unwrapOrThrow(Utils.data(image: object, option: options), StorageError.encodeData)
         })
     }
 

Sources/Utils.swift

@@ -56,9 +56,14 @@ class Utils {
         #endif
     }
 
-    static func data(image: Image) -> Data? {
+    static func data(image: Image, option: Options) -> Data? {
         #if canImport(UIKit)
-            return image.jpegData(compressionQuality: 0.9)
+            switch option.uiKitImageFormat {
+            case .jpg:
+                return image.jpegData(compressionQuality: 0.9)
+            case .png:
+                return image.pngData()
+            }
         #elseif canImport(AppKit)
             return image.tiffRepresentation
         #else