The message length is limited by the size of the image, you can hide (widthheight3)/16 characters. But note that your image will be resized after you have selec

The message length is limited by the size of the image, you can hide (widthheight3)/16 characters. But note that your image will be resized after you have selected one. I am going to append a field where you can see how much information can be hidden. Thanks!