More often than not, people have asked that if they uploaded their profile picture online, would it be possible to disable downloading of their profile photo by others.
There is no full-proof method of preventing images from being saved by the end user.
Whats mentioned here is a simple common technique to prevent someone from saving the actual image by right-clicking on it & Save As or Get Image Location.
- Set the image’s src attribute to a 1 pixel transparent gif
- Set the image’s backgound-image property to the actual image you want it to show
<img src="1x1.gif" alt="cat" style="background-image:url(cat.jpg)"/>