Yup as F.Luent says have a look at Save Page As and on the bottom r/hand side there is a dropdown box.
Chromium has the same feature. Mostly I have always just saved the text portion of what I wanted, but lately i've been using the groovy little screenshot utility, it has a feature where I can choose just to grab an area I select, so I make myself little pictures, lol! For some reason it just seems more enjoyable, I have a file for tips and hints and I store them there, naming them appropriately.