Selenium with the new upgrade 2.0 to 3.* had changed the way it works in the background. Starting with this upgrade, FirefoxDriver has stopped taking the full screenshot. There are many instances where user needs complete screenshot of the web page.
Many teams have worked on it & provided few open source libraries like AShot, ShutterBug etc.
Below code snippet would enable you to get the full screenshot using ShutterBug java library.
