Only the active window
The focused window stays bright. Every other window dims, including other windows of the same app.
Dim background windows on your MacOne window bright.
Everything else, dimmed.
Dimm is a tiny native menu bar app that keeps the window you are working in bright and quietly dims every window behind it, to black or to your own wallpaper, so your eyes always know where to look.
Chrome may warn that the file isn’t commonly downloaded. Choose Download suspicious file (or Keep). Dimm is signed and notarized by Apple.
Dim to your own wallpaper.
Most window dimmers can only paint the background dark. Dimm can also put your wallpaper behind the active window: just the window you are working in, on the desktop you chose.
Active window
Active window
Works with every wallpaper, including Apple's Aerials and Photos. Moving wallpapers show as a still. Wallpaper mode asks for Screen Recording permission once.
Less on screen. More in focus.
One small settings window. Dimm does one thing, and does it well.
One slider
Pick how dark the background gets, right from the menu bar. The change is live while you drag.
Wallpaper mode
Prefer calm over dark? Show only the active window on top of your own wallpaper, something other dimmers cannot do. See it ›
Every display
All screens dim together, so a second monitor never pulls your attention away.
Instant switching
Click another window and it lights up immediately. No fades, no lag.
Exclude apps
Open an app such as System Settings next to your work: it shows on top, and the window you were in stays bright.
Launch at login
One menu item and Dimm is ready the moment you sign in.
Automatic updates
Built-in updates via Sparkle: new versions are checked in the background.
Up and running in a minute.
No window. No dock icon. Just a quiet helper in your menu bar.
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1
Download & open
Open the download. Dimm offers to move itself into your Applications folder, then tucks itself into the menu bar.
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2
Grant Accessibility
Allow Accessibility access once so Dimm can see which window is active.
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3
Just work
Switch windows as you always do. The one you are in stays bright.
Get Dimm
Free, native and lightweight. Built with AppKit for macOS.
Download for macOSChrome may warn that the file isn’t commonly downloaded. Choose Download suspicious file (or Keep). Dimm is signed and notarized by Apple.
