Page Saver

A most useful firefox extension: Page Saver. It saves a PNG image of an entire web page (rather than just the visible bit). If you need to take snapshots of web pages for any reason, it's a boon.

Note that, as initially configured, it will save the images at 25% actual size. To adjust this, go to tools->extensions, select the page saver extension, and hit the "options" button, then tweak to your heart's content.