How can I take a screenshot with Selenium WebDriver?

Question

Is it possible to take a screenshot using Selenium WebDriver?

(Note: Not Selenium Remote Control)

Answer 1

Ruby

require 'rubygems'
require 'selenium-webdriver'

driver = Selenium::WebDriver.for :ie
driver.get "https://www.google.com"
driver.save_screenshot("./screen.png")

More file types and options are available and you can see them in file takes_screenshot.rb.