diff --git a/Sources/HandySwiftUI/Extensions/ImageExt.swift b/Sources/HandySwiftUI/Extensions/ImageExt.swift
index 3d10af4..b6d1058 100644
--- a/Sources/HandySwiftUI/Extensions/ImageExt.swift
+++ b/Sources/HandySwiftUI/Extensions/ImageExt.swift
@@ -52,7 +52,7 @@ extension Image {
          else { return nil }
 
          return bitmapImage.representation(
-            using: .jpeg2000,
+            using: .jpeg,
             properties: [NSBitmapImageRep.PropertyKey.compressionFactor: NSNumber(value: compressionQuality)]
          )
       }
diff --git a/Tests/HandySwiftUITests/ImageExtTests.swift b/Tests/HandySwiftUITests/ImageExtTests.swift
new file mode 100644
index 0000000..638f2ff
--- /dev/null
+++ b/Tests/HandySwiftUITests/ImageExtTests.swift
@@ -0,0 +1,22 @@
+#if os(macOS)
+   import AppKit
+   import Testing
+
+   @testable import HandySwiftUI
+
+   struct ImageExtTests {
+      @Test
+      func jpegDataEncodesAsJPEG() throws {
+         let image = NSImage(size: NSSize(width: 8, height: 8), flipped: false) { rect in
+            NSColor.systemRed.setFill()
+            rect.fill()
+            return true
+         }
+
+         let data = try #require(image.jpegData(compressionQuality: 0.8))
+
+         // Every JPEG file starts with the SOI marker followed by the next marker's 0xFF (JPEG 2000 starts with 0x00 0x00 0x00 0x0C)
+         #expect(Array(data.prefix(3)) == [0xFF, 0xD8, 0xFF])
+      }
+   }
+#endif