I'm considering writing my own image file format for my site. Why? Well, the site is going to include comics that only subscribers can read, and I want to make it a little difficult for someone to drag and drop the image and spread it around. Is there a better way of doing this, or is this a way I should investigate further? If so, how would one go about doing this?
I've read there could be a way in PHP with doing this, but unsure how to go about it if this is a good solution.