WinDim

WinDim is a small software application designed specifically for helping you highlight a user-defined region of the screen, while everything else gets dimmed. It is compatible with Windows XP, Vista, and 7. Microsoft .NET Framework needs to be installed on the target computer in order to make use of the program’s capabilities.

Take advantage of its portable status

You can drop the utility on USB flash drives or other portable devices so you can carry it with you all the time. Plus, you may run it without having to enable administrative privileges. It can be opened directly from the storage device.
It does not alter your Windows registry and leave other setup files behind so you may uninstall it with the aid of a simple deletion task of the files that you have downloaded from the Internet. A double-click on the executable file allows you to access its GUI because you do not have to follow the predefined steps included in an installation process.

Simplistic looks and a few configuration settings

WinDim offers you the possibility to select a custom region of the desktop by moving the mouse cursor to the top left corner and bottom right corner. Plus, you need to press on the space bar key in order to save the current location after moving the mouse cursor to a preferred desktop position. At the end of the process the tool shows the mouse coordinates.
Tests have demonstrated that WinDim carries out a task quickly and without errors. It remains light on system resources so the overall performance of the PC is not hampered.

Final words

To sum things up, WinDim comes bundled with basic features and provides a simple software solution for helping you place focus on a certain area of the screen during presentations. It can be tweaked by less experienced users and professionals alike.