diff --git a/base/bmp_io_c.h b/base/bmp_io_c.h
index 97d9bf2..6812ae8 100644
--- a/base/bmp_io_c.h
+++ b/base/bmp_io_c.h
@@ -320,6 +320,16 @@ int saveMMBitmapAsBMP(MMBitmapRef bitmap, const char *path)
 	return 0;
 }
 
+uint8_t *saveMMBitmapAsBytes(MMBitmapRef bitmap, size_t *dataLen)
+{
+	uint8_t *data;
+	if ((data = createBitmapData(bitmap, dataLen)) == NULL) {
+		*dataLen = -1;
+		return NULL;
+	}
+	return data;
+}
+
 static uint8_t *readImageData(FILE *fp, size_t width, size_t height,
                               uint8_t bytesPerPixel, size_t bytewidth)
 {
diff --git a/robotgo.go b/robotgo.go
index 6ff3f4a..f337837 100644
--- a/robotgo.go
+++ b/robotgo.go
@@ -797,6 +797,19 @@ func ToCBitmap(bit Bitmap) C.MMBitmapRef {
 	return cbitmap
 }
 
+// ToBitmapBytes saves Bitmap to bitmap format in bytes
+func ToBitmapBytes(bit C.MMBitmapRef) []byte {
+	var len C.size_t
+	ptr := C.saveMMBitmapAsBytes(bit, &len)
+	if int(len) < 0 {
+		return nil
+	}
+	bs := C.GoBytes(unsafe.Pointer(ptr), C.int(len))
+	C.free(unsafe.Pointer(ptr))
+	return bs
+}
+
+
 // ToMMBitmapRef trans CBitmap to C.MMBitmapRef
 func ToMMBitmapRef(bit CBitmap) C.MMBitmapRef {
 	return C.MMBitmapRef(bit)