Smart Auto Refresh Pro is an addon that allows you to auto refresh web pages in a fix set time interval. This add-on is quite useful as it makes it easy to refresh web pages automatically in a fix time interval. You can also stop refreshing all pages together by using a switch at the top of the pop up window. You can easily manage the start and off time using a start and stop button. You can also vary the reload time in minutes and seconds. It also allows you to stop all timers in one click. The add-on is very simple and easy to use.