图像保护（确保用户无法窃取照片）

Question

I'm building a webshop that offers people certain photos. In this webshop you can (of course) view your pictures.

So to make sure the photos are safe from downloading directly from the site, I gave all my image html tags the code

oncontextmenu="return false;"

Now this protects the photos from right-clicking and saving them. The problem is that if a user is smart enough to just drag the photo to their desktop, they can still download the picture.

Is there a (easy) way to protect these images from all forms of download?

Answer 1

There will always be a way for people to download images on a website.

You can disable dragging images using this JavaScript:

    $("#imagegallery").mousedown(function(){
        return false;
    });

but even then you could just view the source and search for the file.

I would suggest adding a watermark, using an already made PHP class its very straight forward to add your logo to each image.

Or you could only display smallish images, making them come to you for the full versions.