How to get window size, resize or maximize window using Selenium WebDriver ? package TechLearndotin; import org.openqa.selenium.Dimension; import org.openqa.selenium.WebDriver; import org.openqa.selenium.firefox.FirefoxDriver; import org.testng.annotations.Test; import org.testng.annotations.BeforeTest; import org.testng.annotations.AfterTest; public class TechLearn { public WebDriver driver; Read more about How to get window size, resize or maximize window using Selenium WebDriver ?