You can do images with javascript. It's slow since you don't have any hardware decryption. Wouldn't be a great mobile experience. You could build a site around

You can do images with javascript. It's slow since you don't have any hardware decryption. Wouldn't be a great mobile experience. You could build a site around limitations but if nothing else, it would eat up battery. There are probably faster javascript encryption libraries than what this random blog I found uses. https://alicebobandmallory.com/articles/2010/10/14/encrypt-images-in-javascript https://alicebobandmallory.com/articles/2010/10/14/encrypt-i...