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obscurascreen.com · Free for Windows

One monitor on.
One monitor off.

Obscura Screen Dimmer blacks out any display in your multi-monitor setup while you keep working, watching, or presenting on the rest. Toggle anytime with a hotkey.

Download Obscura Screen Dimmer
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ZIP · Windows · No install required
Active
Dimmed
Blacked out

Keep focus on one screen while the other goes dark.

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Why use Obscura Screen Dimmer?

Improve focus

Remove visual noise from a second screen so you can concentrate on the task in front of you.

Protect privacy

Working with sensitive content on one monitor? Black out the other so nothing leaks to a shared desk or meeting room.

Relax your eyes

Watching a movie or stream on one screen? Dim the spare monitor to cut glare and give your eyes a break.

Simple controls, instant results

Pick which monitor to target, dim it with one click, and set a global hotkey like Ctrl+Shift+P to toggle anytime.

  • Choose any monitor in a multi-display setup
  • One-click dim, toggle, and undim
  • Customizable keyboard shortcut
  • Lightweight — runs in the background
Obscura Screen Dimmer application window showing monitor selection, dim controls, and hotkey settings
The Obscura Screen Dimmer control panel

How to install

  1. 1
    Download Obscura Screen Dimmer

    Click the download button above to get the ZIP file.

  2. 2
    Unzip the file

    Right-click the downloaded ZIP and choose Extract All, or use your preferred archive tool.

  3. 3
    Open the folder and read the README

    The included README has any extra notes you need before running the app.

  4. 4
    Run ScreenDimmer.exe

    Double-click the executable to launch Obscura Screen Dimmer. No installer required.

Get the ZIP