How to take full screen screenshot-FireShot(firefox add-on)

Say goodbye to Ctrl + print screen.. an old, unfashioned and complicated way to take screenshot of just visible part.
Try the revolutionary FireShot- A firefox add-on (extension) that help users create entire screenshot og webpages. It helps you quickly capture your screen, chuck the unnecessary details, highlight the required stuff and distribute to the whole world using free image hosting server.
What you can do with the captures?
-Edit, crop, highlight
-Save to your hard drive(.png, .jpeg, .bmp, .gif)
-Copy to clipboard
-Print
To add this extension Click