I capture screenshots of web pages many times every day. Print Screen… Photoshop… edit… paste…repeat. I can do it pretty fast. But the Page Saver Firefox extension is a much better way.
Save the visible portion of a web page or the entire page to an image in one click. Page Saver’s got lots of configurable options, too, like the default filename for the image (with date variables for time-sensitive grabs), customizable keyboard shortcuts and a choice of PNG or JPEG file output format. [Lifehacker]