Paparazzi! is a handy little niche utility for Mac OS X that creates screenshots of full webpages. Add a URL (or choose from a list of recently visited sites) and Paparazzi! brings up the page in a mini-browser. Save the file in your preferred format, with custom file name options (such as auto-adding the date, year, URL, page title and more).
The real gem here is that Paparazzi! takes a screenshot of the entire web page, not just what’s visible on-screen. Great tool for web designers.
Best of all, it’s free! Note that the developer does ask for donations of you find yourself using the app a bit, so show some love and drop a few bucks to the developer if this software is helpful for you.