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LightMe is a small Preference Pane and background daemon that allows you to change brightness and power of your monitor with customizable keyboard shortcut. Using Lightme you can reduce to a preset value the brightness, restore it to the last value (and with anther click of your restore shortcut you can switch to the max value) and poweroff the monitor.You can also hibernate your computer since 2.0!

Lightme core is a little lightweight background daemon compatible both with Intel and PPC processors. You can install it at login, activate or deactivate it with a simple click from the preferences pane.

What's New

Version 2.5:
  • Leopard Compatibility.(USE 2.0 FOR TIGER SYSTEMS)


Mac OS X 10.5 or later

*Previously available here

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LightMe User Discussion

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Jpwgibson Member IconComment+57

Does anyone know how to uninstall this? I can't get it working on my iMac (Intel)

Reply1 reply
Version 2.5

If it's a preference pane, open up System Preferences and right-click on the program's icon. You'll have the option to remove it.

DarkFader Member IconComment+0

This is a cool utility, better than the ones doing just color adjusting.
On my MacBook the backlight controls function as intented. But on my iMac the "Reduce to off" does not turn off the backlight but rather goes to lowest brightness.
I want to use this program in combination with Screen Sharing but any cursor movement turns on the display again, which I do not want.

Reply0 replies
Version 2.5
tekk-x Member IconComment+3

I always try to install this program again and again when the new version is released but it never worked for me. I'm using iMac Core Duo and when I "turn off" the display, it's OK but when I want it to wake up, it only blinks (fast changes between sleeping display and very dark display), so I have to turn computer into sleep by pressing the turn off button and immidietly restart the computer. If I don't do this, the monitor goes to sleep in about 30 seconds again and I have to again make it to sleep and so on. :-(

Reply0 replies
Version 2.0
gopy Member IconReview+0

The best utilities are the simplest and most useful ones, and this is both. Thank you!

Reply0 replies
Version 2.0
Thresher-The-Shark Member IconComment+145

Works on my 12" PowerBook running 10.4.9.

However I can't seem to make LightMe install at login.

I have to manually launch LightMe and click Activate Monitor Shortcuts every time I login, even after repeatedly clicking the Install At Login button.

I tried tossing the pref file and reinstalling the preference pane to no avail.

I would love to have this app work, any advice would be much appreciated.

Reply1 reply
Version 1.5

Version 2 fixed my login problem, thanks!

Balthamos Member IconReview+13

Perfect. Does exactly what it says it does. No fake "black screen" stuff either. Just like when your display falls asleep normally.

Reply0 replies
Version 1.5
Binarymix Member IconComment+8

There is a Dashboard widget called Sleep Display, or by the same author, an application:


You can use Butler to map it to any key. Maybe in the future the author will allow it to run as a background process, and allow it's own key mapping ability (I'm trying to find ways to make butler obsolete because it makes my startup really slow :))

Reply0 replies
Version 1.0
laserdan Member IconComment+0

After installing on my Core Dual iMac (running 10.4.9)and logging out and in again I find that it does switch my built-in LCD between the dimest and brightest settings, but does NOT turn off the LCD like it may do on a laptop.

The iMac screen has no built-in provision for turning off the back-light, it can only be dimmed. Putting the screen to sleep does turn off the back-light, but LightMe does not do this, and as far as I know, no utility does. Applescript can be made to turn off the back-light, but it takes at least a minute and is just a bit clunky. Anybody want to really try and make this work? I know a bunch of iMac users that would be greatful!

2 stars for trying, but not ready for iMac users.

Reply2 replies
Version 1.0

Hey i use Scriptsaverand an applescript then when you activate the screensaver via hotkey it runs the applescript but it still takes a full minute before the screen goes black. Here is the script but it must have LoginShortUsername Replaced by your shortname and LoginPassword replaced by your loginpassword then save the script using script editor and set script saver so it uses it

do shell script ("pmset displaysleep 1") ¬
user name ¬
"LoginShortUsername" password ¬
"LoginPassword" with administrator privileges


InsomniaX turns off the display for real.

MadMacMad Member IconReview+120

Greet ! Thank you! It just works hehe

Reply0 replies
Version 1.0
morpe Member IconComment+28

very nice!!


Reply0 replies
Version 1.0
user icon+0
Version 2.5
> 5 4


Current Version (2.x)


Downloads 8,909
Version Downloads 6,364
Type Utilities / System
License Free
Date 01 Dec 2007
Platform OS X / PPC 32 / Intel 32
Price Free