How to resize current browser window in Selenium WebDriver with Java?

Question

I need to resize the browser as 300x400 during executing the Selenium automated tests. How can I resize the browser window in Selenium WebDriver (aka, Selenium 2) with Java?

[Note: It needs to resize the browser window for testing Responsive Web Design (RWD)]

Answer 1

You can get a reference to the current window with driver.manage().window(). And the window has a setSize() method, so you could try

Dimension dimension = new Dimension(800, 600);
driver.manage().window().setSize(dimension)

Answer 2

For Responsive Design it's better if you don't use fixed data, in this case screen resolution - users need most often (cause it's much less prone to errors) :

_driver.manage().window().maximize();

or

_driver.manage().window().fullScreen();

Answer 3

We can also use Chrome capability to resize the window.

ChromeOptions options = new ChromeOptions();
options.addArguments("window-size=800,480");

DesiredCapabilities cap = DesiredCapabilities.chrome();
cap.setCapability(ChromeOptions.CAPABILITY, options);