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Included in PeakFlow

Dim inactive windows and keep your work bright.

FocusDim dims the windows behind your work. You choose whether one window, every window from the same app or all windows stay bright. Dimming fades out while you drag a window. It works across all your monitors.

One appAll the tools in one download
Ctrl+Shift+DGlobal Hotkey
30 daysFree trial
The FocusDim panel: dimming is on, App windows mode is selected and intensity is set to 70%
The FocusDim panel open over a dimmed desktop, with the intensity slider at 60%
Feature 01
Choose how dark the background gets
Set the dim to 10% for a light tint or up to 90% for a darker background. Choose one of four colour presets or enter a hex code.
✓
Intensity range from 10% to 90%
✓
4 dim colour presets or your own hex code
✓
Adjustable fade speed (instant to 5 seconds)
Alternative to HazeOver ($4.99)
FocusDim keeps the document you're writing bright while the notes, chart and terminal windows behind it are dimmed
Feature 02
Use it across your monitors
If you work across three screens, FocusDim dims windows on your second and third monitors too.
✓
Works across all connected displays
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Detects monitor changes on the fly
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No configuration needed
FocusDim App windows mode: both terminal windows stay bright while the document and browser are dimmed
Feature 03
◐
Choose which windows stay bright
Active Window dims everything except the window you clicked. App Windows keeps every window from the same app visible. All Windows dims only your desktop and taskbar.
✓
Active Window: one window stays bright
✓
App Windows: all windows from the focused app stay bright
✓
All Windows: only desktop and taskbar get dimmed
FocusDim Active window mode with a terminal in focus and every other window dimmed
Feature 04
Drag Escape
When you drag a window, the dim fades out so you can see where to put it. It fades back in when you let go, without a keyboard shortcut.
✓
Automatic: detects drag by window movement
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Smooth fade out on drag, fade in on drop
✓
Toggle on/off in settings
HazeOver requires manual fn key press

Set up FocusDim in under a minute

Install PeakFlow and open FocusDim. There are no setup wizards or config files to deal with.

1
Download PeakFlow
All the tools come in one installer, under 200 MB.
2
Launch FocusDim
FocusDim sits in your system tray or menu bar.
3
Switch between windows
FocusDim dims the windows behind the one you switch to.

Frequently Asked Questions

Does FocusDim work on multiple monitors?

Yes. FocusDim supports multi-monitor setups and dims inactive windows across all connected displays.

Can I adjust the darkness level?

Yes. Dimming opacity goes from 10% up to 90%. You can also change the dim colour.

How do I toggle it on and off?

Press Ctrl+Shift+D to toggle the dimming effect, or click the system tray icon.

Is FocusDim good for ADHD?

It can help if moving windows and new messages pull your attention away: the other windows stay visible but darker than your task. It isn't a treatment, and it doesn't stop notifications. Our ADHD set-up guide covers strengths and settings to try.

Is FocusDim the same as Focusdim on the Mac App Store?

No. FocusDim is made by PeakFlow and runs on Mac and Windows as part of the PeakFlow app. Focusdim on the Mac App Store is a separate app by another developer.

How does FocusDim compare with HazeOver and free dimmers?

HazeOver is Mac only and costs $4.99; free Windows tools such as LeDimmer and PowerDimmer give a basic dim. See HazeOver alternatives and window dimmers for Windows.

Is it free?

FocusDim is free for 30 days with every feature included. The trial starts automatically when you install, with no account or card. After that, Pro is US$2.99 a month for all five tools, or you can buy FocusDim outright for US$9.99.

Everything in the 30-day trial

BasicsExtras
Toggle dimming on/offCustom dim colour
Adjustable opacityHighlight modes: app & all windows
Hotkey togglePer-display enable/disable
Peek (temporary reveal)Excluded apps list
Active window borderCustom fade duration
Auto-reveal desktopDrag-escape

Free for 30 days with every download. Then Pro is US$2.99 a month, or buy FocusDim for US$9.99.

Try FocusDim
on Mac or Windows

Download PeakFlow to try FocusDim free for 30 days.