I use a bookmarklet. It can be something basic, such as: javascript:void(document.oncontextmenu=document.onMouseDown=()=>true) ...which works for, maybe,

I use a bookmarklet. It can be something basic, such as: javascript:void(document.oncontextmenu=document.onMouseDown=()=>true) ...which works for, maybe, 60% of cases. Or you can try a more sophisticated one for greater success. e.g.: javascript:(function(w){ var arr = ['contextmenu','copy','cut','paste']; for(var i = 0, x; x = arr[i]; i++){ if(w['on' + x])w['on' + x] = null; w.addEventListener(x, function(e){e.stopPropagation()}, true); }; for(var j = 0, f; f = w.frames[j]; j++){try{arguments.callee(f)}catch(e){}}})(window); Unfortunately, these don't work on 100% of the pages. Otherwise, as someone else has suggested, Firefox allows you to disable context menu hijacking for every site.