This addon is mediocre. Nowhere near as good as UNMHT was, but that one didn't get updated to work with these newer versions of FF, and that's a big loss. Save Page WE can't save this or that; I'm constantly getting messages about it not being able to save some part or parts of the page, and sometimes it doesn't save anything at all--it just doesn't respond to any attempts to save a page! You'll see the floppy disk icon change color which indicates you've clicked it to save something, but nothing happens. All I can say is, I never had these problems with UNMHT, which saved everything. Worse yet, I look for some other addon that might do the same thing, but I find nothing! The only solution I could think of was to download a portable version of FF v56 and download UNMHT for it, as well as some other addons that haven't been updated for FF. Meh.