You can prevent your site visitors from downloading images and other content from your page ad protect your page content from being stolen by using the disable right click feature in WebStarts.
To disable right click follow these steps.
Step 1: In the page editor view click the settings icon from the left side panel.
Step 2: Find the option to enable and disable right click. Slide the switch to the right to disable right click.
Note: To use this feature you must have a WebStarts Pro Account. If you’re using the free version you’ll be prompted to upgrade to the pro version after clicking on the “Disable Right Click” checkbox.