diff --git a/scripts/osx/OF_debug_overlay.png b/scripts/osx/OF_debug_overlay.png
new file mode 100644
index 00000000000..e6e64d80f2d
Binary files /dev/null and b/scripts/osx/OF_debug_overlay.png differ
diff --git a/scripts/osx/build_iconset.sh b/scripts/osx/build_iconset.sh
old mode 100644
new mode 100755
index 57d7c1d09a5..bd9d344f46f
--- a/scripts/osx/build_iconset.sh
+++ b/scripts/osx/build_iconset.sh
@@ -1,16 +1,52 @@
 #!/bin/bash
+
+# usage is: build_iconset.sh <path_to_1024x1024_PNG>
+# scripts creates .icns beside the original PNG
+# if orig PNG is not 1024x1024 it will get stretched/compressed
+# if you have imagemagick install you get a free debug icon
+
 IFS='.' read -ra ADDR <<< "$1"
-ICONSET=${ADDR[0]}.iconset
-mkdir $ICONSET
-sips -z 16 16     $1 --out $ICONSET/icon_16x16.png
-sips -z 32 32     $1 --out $ICONSET/icon_16x16@2x.png
-sips -z 32 32     $1 --out $ICONSET/icon_32x32.png
-sips -z 64 64     $1 --out $ICONSET/icon_32x32@2x.png
-sips -z 128 128   $1 --out $ICONSET/icon_128x128.png
-sips -z 256 256   $1 --out $ICONSET/icon_128x128@2x.png
-sips -z 256 256   $1 --out $ICONSET/icon_256x256.png
-sips -z 512 512   $1 --out $ICONSET/icon_256x256@2x.png
-sips -z 512 512   $1 --out $ICONSET/icon_512x512.png
-cp $1 $ICONSET/icon_512x512@2x.png
-iconutil -c icns $ICONSET
-rm -R $ICONSET
+ICONSET="${ADDR[0]}.iconset"
+mkdir "$ICONSET"
+sips -z 16 16     "$1" --out "$ICONSET/icon_16x16.png"
+sips -z 32 32     "$1" --out "$ICONSET/icon_16x16@2x.png"
+sips -z 32 32     "$1" --out "$ICONSET/icon_32x32.png"
+sips -z 64 64     "$1" --out "$ICONSET/icon_32x32@2x.png"
+sips -z 128 128   "$1" --out "$ICONSET/icon_128x128.png"
+sips -z 256 256   "$1" --out "$ICONSET/icon_128x128@2x.png"
+sips -z 256 256   "$1" --out "$ICONSET/icon_256x256.png"
+sips -z 512 512   "$1" --out "$ICONSET/icon_256x256@2x.png"
+sips -z 512 512   "$1" --out "$ICONSET/icon_512x512.png"
+sips -z 1024 1024 "$1" --out "$ICONSET/icon_512x512@2x.png"
+##cp "$1" "$ICONSET/icon_512x512@2x.png"
+iconutil -c icns "$ICONSET"
+rm -R "$ICONSET"
+echo "plain icon done"
+
+if ! command -v magick &> /dev/null
+then
+	echo "brew install imagemagick to generate a debug icon overlay"
+	exit 1
+else
+	THE_SCRIPT_DIR=`dirname "$0"`
+	echo "${THE_SCRIPT_DIR}"
+	DEBUG_PNG="${ADDR[0]}_debug.png"
+	magick composite -verbose  -gravity center "${THE_SCRIPT_DIR}/OF_debug_overlay.png" "$1" "${DEBUG_PNG}"
+	ICONSET="${ADDR[0]}_debug.iconset"
+	mkdir "$ICONSET"
+	sips -z 16 16     "${DEBUG_PNG}" --out "$ICONSET/icon_16x16.png"
+	sips -z 32 32     "${DEBUG_PNG}" --out "$ICONSET/icon_16x16@2x.png"
+	sips -z 32 32     "${DEBUG_PNG}" --out "$ICONSET/icon_32x32.png"
+	sips -z 64 64     "${DEBUG_PNG}" --out "$ICONSET/icon_32x32@2x.png"
+	sips -z 128 128   "${DEBUG_PNG}" --out "$ICONSET/icon_128x128.png"
+	sips -z 256 256   "${DEBUG_PNG}" --out "$ICONSET/icon_128x128@2x.png"
+	sips -z 256 256   "${DEBUG_PNG}" --out "$ICONSET/icon_256x256.png"
+	sips -z 512 512   "${DEBUG_PNG}" --out "$ICONSET/icon_256x256@2x.png"
+	sips -z 512 512   "${DEBUG_PNG}" --out "$ICONSET/icon_512x512.png"
+	sips -z 1024 1024 "${DEBUG_PNG}" --out "$ICONSET/icon_512x512@2x.png"
+	###cp "$1" "$ICONSET/icon_512x512@2x.png"
+	iconutil -c icns "$ICONSET"
+	rm -R "$ICONSET"
+	rm "${DEBUG_PNG}"
+	echo "debug icon done"
+fi