PUBLIC MARKS from nhoizey with tags screenshot & extension

Pearl Crescent Page Saver is a free extension for Mozilla Firefox that lets you save an image of a web page to a file in PNG format. Options let you control whether images are saved at full size or scaled down to a smaller size

Screengrab saves entire webpages as images. Just install it, make sure Java is configured (Java absolutely necessary), and right-click on a page. You can save the entire page as an image (it scrolls around the page taking shots and stitches it together), just the visible portion, or the browser window. For examples take a look at the homepage.