Some times you may need to quickly switch across different screen resolutions, this is required when you are testing the look and feel of a application or website on different monitor resolutions. We had already talked about how to quickly change monitor resolution with a freeware program called Display Tuner.
Change Display Settings is a free to use program which allows you to enumerate and change display modes in windows which can be applied without you monitor going blank.
You just need to run this program executable and then select the resolution in the list as shown in the application snapshot above and then click Change to apply the resolution instantly. It will get all possible display modes and change them using EnumDisplaySettings and ChangeDisplaySettings functions in windows. This program works on all the version of windows including windows 7, We have just tested this tool on windows 7 ultimate 32 bit.