[Theodores]

I like your thinking. With 'deepzoom' images composed of lots of tiles that overlap by 4 pixels ('Seadragon') you can change the tile size from the default 254px to anything else that works with jpg and powers of two. Theoretically you could deliver thousands and thousands of tiles for a high-resolution image. You could also get the viewer to change the zoom level by a small percentage on each 'move' so that anyone trying to stitch together an image from screen-grabs will have that random bonus scaling to deal with - lovely!!!

A half-decent programmer could reverse-de-obfuscate the image tiles into a whole image if they really wanted to, they could even post their code for that onto github, however, in all of the years that Seadragon has been around the tools to make the tiles in the first place haven't exactly proliferated so the tools to decipher the tiles aren't likely to get widespread circulation either. With tiles you are pretty well protecting your stuff as a convenient by-product, the real aim is to deliver a superior viewing experience.