Screen Magnifier Settings: Windows built in

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This page shows an overview of Microsoft Screen Magnifier's UI settings and their location in the Windows registry.


Magnifier settings are located in HKEY_CURRENT_USER\Software\Microsoft\ScreenMagnifier in the Windows registry. The location of the Magnifier executable, together with some other settings is stored in HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Accessibility\ATs\magnifierpane. Some other notes:

  • If a setting in the Magnifier hasn't been used before, the key for it doesn't exist at that location. Therefore, it seems the default settings are kept somewhere else. Probably the same is true for Narrator.
  • Live configuration is not supported, i.e. when the Magnifier is running, an update in the registry is not reflected in the UI. You need to close the Magnifier and open it again for the changes to take place. As it seems, the settings are read from the registry only on application startup, though they are written every time you tinker with the UI. The same is true for Narrator.
UI Setting Registry Name Registry Type Registry Data
Zoom level * Magnification REG_DWORD 100..1600
Set how much the view changes... ** ZoomIncrement REG_DWORD 25..400
Turn on color inversion Invert REG_DWORD 0 or 1
Follow the mouse pointer FollowMouse REG_DWORD 0 or 1
Follow the keyboard focus FollowFocus REG_DWORD 0 or 1
Have Magnifier follow the text insertion point FollowCaret REG_DWORD 0 or 1

* You can set a zoom level between 100% and 1600% from the UI, with increments of 100.

** The UI allows values of 25, 50, 100, 150, 200, and 400%.