Well, i have a web page where i am displaying few images. But my problem is that i don\'t want user to download or save those images. I can apply watermark to those images b
As mention in all the answers, there is no way to prevent users from saving the image, however you can try to make it hard for a user to do it.
although this is not good performance, you can split the image into many small pieces, making it harder (but not at all impossible) to save them and join them.