LeDimmer is an app that lets you dim the area surrounding the active window on you screen.
Features:
Very light weight ( 80 KB )
Use very little RAM ( 732 KB )
Instantly dims the surrounding environment when open
Runs in the background and hides in system try
It will automatically brighten and dim windows as the active window
changes
It works alongside F.lux
It is portable and hence can be run from a USB drive also.
Custom dark image can also be set for the background.
All the settings need to be applied through command line only. The default settings will meet the requirement for most users.
C:\LeDimmer\LeDimmer.exe -alpha N(1-250) changes background dimness value. 250 makes background completely black.
C:\LeDimmer\LeDimmer.exe -image imagename.bmp can be used to set custom background image. Only .bmp images can be used