SFunKey, Make Fn Key Actions Directly Accessible

Martin Brinkmann
Feb 7, 2012
Updated • Feb 8, 2012
Software, Windows, Windows software

Many notebooks, laptops and netbooks ship with a smaller sized keyboard that lacks some of the keys that are on standard sized keyboards. This often includes media keys like play, pause or changing the volume, but also keys like numlock or other numpad keys. These keys are usually removed because of size constraints. Manufacturers add the Fn key (short for function) instead to those keyboards to allow users to access those keys in a different way.

Most laptop keyboards display a key's Fn action in blue on the keyboard. To activate one of the features, one has to press the Fn key and the key the function is mapped to.

Function key layouts may differ depending on the manufacturer of the laptop. Media keys most of the time are mapped to the F-key bar at the top.

One of the issues here is that it is often not that comfortable to use these keys. It may be difficult to nearly impossible to use the functionality with just one hand.

SfunKey has been designed to provide comfortable access to some of the extra keys. It maps a total of 12 keys to the F-keys on the keyboard. These features can now be activated by pressing the key twice on the keyboard, which is more comfortable than having to use the Fn key with one of the F-keys.

The following actions are available after the portable program has been launched (from F1 to F12): Sleep, LCD Brightness-. LCD Brightness+, Connect to Projector, Lock PC, Task Manager, Volume Mute, Volume-, Volume+, Previous Track, Play/Pause, Next Track.

The F12 key is not active by default, as it is often reserved by the system.

The program displays selected actions in an on screen display by default which can be disabled in the program settings.

Incompatible programs can be added to the compatibility listing which blocks program features when those applications are running on the system. This may be useful for full screen games for instance.

SFunKey is a handy portable program for mobile users who prefer to access media actions and other actions without the Fn key. The program is compatible with all recent 32-bit and 64-bit editions of the Microsoft Windows operating system.


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  1. Alex Bendersky said on December 17, 2020 at 2:12 pm

    hi, how do i enable the program?

  2. Robbie said on February 7, 2012 at 11:19 pm

    What amazing timing. I signed up for your newsletter last night. I have one-arm & just got a new laptop, who’s FN key I can only use to turn volume down, not up. I’d searched but failed to find a solution.
    Thanks :)

    1. Sina said on February 8, 2012 at 2:53 pm

      Are you Lucky Luke ? I think you might be a lovely person and seems your God also loves you. ;-)

    2. Martin Brinkmann said on February 7, 2012 at 11:26 pm

      Glad that it helps you out ;)

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