diff --git a/ByteFlipper.js b/ByteFlipper.js
new file mode 100644
index 0000000..a5961ce
--- /dev/null
+++ b/ByteFlipper.js
@@ -0,0 +1,26 @@
+/* ByteFlipper.js v20170717 - Marc Robledo 2013-2017 - http://www.marcrobledo.com/license */
+function flipFile(){
+	var type=el('radio8').checked?8:4;
+	if(tempFile.fileSize>MAX_ROM_SIZE){
+		MarcDialogs.alert('Too big file');
+		return false;
+	}else if(tempFile.fileSize%type!==0){
+		MarcDialogs.alert('File is not divisible by '+type);
+		return false;
+	}
+
+	var tempFile2=new MarcBinFile(tempFile.fileSize);
+	var offset=0;
+	for(var i=0; i<tempFile.fileSize; i+=type){
+		tempFile2.writeBytes(offset, tempFile.readBytes(offset, type).reverse());
+		offset+=type;
+	}
+	tempFile2.fileName=tempFile.fileName.replace(/\.(.*?)$/, ' (byteflipped).$1');
+	tempFile2.save();
+}
+function flipBytesInFile(){
+	if(el('input-file-flip').files.length)
+		tempFile=new MarcBinFile(el('input-file-flip'), flipFile);
+	else
+		MarcDialogs.alert('No file selected');
+}
diff --git a/RomPatcher.png b/RomPatcher.png
deleted file mode 100644
index 81c3aec..0000000
Binary files a/RomPatcher.png and /dev/null differ