To get the most out of the screen resolution application please open this page in your Internet Explorer browser.
For Firefox, Opera & Safari users
You can still look at any website in different screen resolutions using the below buttons, however in that case it is a simplified version of the tester, which only opens the specified page in a pop-up window of your choice. You would therefore have to use a screen resolution larger than (or equal to) the pop-up window in order to be able to see it completely.