Thanks @seajay96. Unfortunately these other options (Joliprint, GoodReader) aren't able to do what I need. I mostly want this capability for documenting receipts, travel and hotel bookings, etc, where you'd at least have to log in again to get to the target page, if you could even do that much. Saving pages to read later in GoodReader isn't what I'm trying to do.
Dumb question: what happens if you just copy the receipt and then grab it from the clipboard with GoodReader?