For those who make Android mod menu. Instead putting the image in the assets, you can compress and encode your image into base64 and put the code instead. This saves some time
Compress png: https://compresspng.com/
Base64 encode: https://www.base64encode.org/
Compress png: https://compresspng.com/
Base64 encode: https://www.base64encode.org/
Java:
byte[] decode = Base64.decode("encoded base64 here", 0);
this.yourImageView.setImageBitmap(BitmapFactory.decodeByteArray(decode, 0, decode.length));