Screenshot Pimp is a good screencaptor for Mozilla Firefox that will let you take screenshots of what you are seeing on the windows of the web browser. It offers different ways to take screenshots as well as different sizes, including a quite useful one which allows you to save the image of the whole website, including the parts you have to scroll down to view. Then, choose the format for the picture: JPG or PNG. Finally, it also offers the possibility to download videos from Youtube and similar websites. You'll only have to click the button in the system tray and wait for a few seconds. If you use Firefox and you usually need to take screenshots of websites, Screenshot Pimp can be helpful. Simple but helpful, exactly what you need with no extra features.
