How do I resize the window in Chrome and Firefox when testing with Selenium?

Question

We created extensions for Chrome, Firefox and Safari and we want to test our extensions with Selenium. We have an Ubuntu server and I installed Firefox and Chrome in it (wit

Answer 1

For Chromejust add before "webdriver.Chrome" init:

chrome_options.add_argument("--window-size=1920x1080")

For all browsers:

There is an official selenium python binding for that: http://selenium.googlecode.com/git/docs/api/py/webdriver_remote/selenium.webdriver.remote.webdriver.html#selenium.webdriver.remote.webdriver.WebDriver.set_window_size

driver.set_window_size(1920, 1080)

or

driver.maximize_window()

or with javascript

driver.execute_script("window.resizeTo(1920,1080)")

Answer 2

driver.set_window_size(width, height) 

If you don't know the width and height use the How Big Is My Browser website.