In google chrome in windows open any website fro which you want to take screen shot
press F12 key then press Ctrl+Shift+m keys then you will see menu-bar to top right side to page(3 vertical dots, you can able to see there are you menus you have to click on bottom 3 dots menu) then click on "capture screenshot" menu item and your screen shot will automatically donloaded.
Tags :
google, shot, chrome, screen