How do I prevent pages stored locally from connecting to the internet? I often save web pages in html only format to save time, so I don't have to connect to the internet to view them. My problem is that when I view them, they start loading images and video from the internet. This defeats the whole purpose of storing them locally. I can't just switch to offline mode, because then none of my Firefox windows will be able to connect to the internet. I don't think that previous versions of Firefox did this. Is there a way to disable this behavior, or do I have to revert to a previous version?