Maybe you mean that you have seen sites where you can’t do an “inspect” with a mouse-click? If so……
I’m going to answer with the Chrome browser in mind. Firefox and others may have similar methods.
Usually when I see this it’s because a photographer doesn’t want their pictures downloaded. Frankly, I think it’s a waste of time. Sure, somebody could “steal” your photo, but it’s so easy to defeat this if someone really wants to.
Another way may even be simpler. Instead of right-clicking to get Inspect, just go to Settings…. More tools… Developer Settings. This should bring up the inspector. So you’ll have to hunt a bit more without right-clicking, but you should be able to find whatever you’re looking for. (Source: Quora)
The easiest way around it is F12 - this will open the source panel. While you will still not be able to right click, you can use the select element button and left click to get much the same result.
You can also get a plugin that disables the ‘disable right click’ code! (Source: Quora)
You can use these bookmarklets to make it almost the same.
Turn on Inspect:
(select, then drag that into your bookmakrs bar)
Turn off Inspect:
(also drag that)
Easy & Simple > Use right-click-copy or disable right click extension.