diff --git a/src/lime/_internal/graphics/ImageCanvasUtil.hx b/src/lime/_internal/graphics/ImageCanvasUtil.hx
index 04f6de494a..bec048744e 100644
--- a/src/lime/_internal/graphics/ImageCanvasUtil.hx
+++ b/src/lime/_internal/graphics/ImageCanvasUtil.hx
@@ -192,7 +192,7 @@ class ImageCanvasUtil
 				buffer.__srcCanvas.setAttribute("moz-opaque", "true");
 			}
 
-			buffer.__srcContext = buffer.__srcCanvas.getContext("2d", {alpha: image.transparent});
+			buffer.__srcContext = buffer.__srcCanvas.getContext("2d", {alpha: image.transparent, willReadFrequently: image.willReadFrequently});
 		}
 		#end
 	}
diff --git a/src/lime/graphics/Image.hx b/src/lime/graphics/Image.hx
index 79c79ac326..9e579ec8a7 100644
--- a/src/lime/graphics/Image.hx
+++ b/src/lime/graphics/Image.hx
@@ -176,6 +176,18 @@ class Image
 	**/
 	public var width:Int;
 
+	#if (js && html5)
+	/**
+		Whether this image should be rendered on the CPU. This is slower, but speeds up operations
+		like `copyPixels()` that read from the image. Always set this value immediately after
+		constructing the image, before calling `ImageCanvasUtil.convertToCanvas()`.
+
+		To use this with `openfl.display.BitmapData`, create an instance with `fillColor` set to 0,
+		then immediately set `bitmapData.image.willReadFrequently = true`.
+	**/
+	@:noCompletion public var willReadFrequently:Bool = false;
+	#end
+
 	/**
 		A convenience property, unused internally, which may be helpful for different renderer
 		implementations