OLED Sleeper is a lightweight Windows tool to blackout or dim idle monitors, helping users prevent OLED burn-in and temporarily sleep secondary monitors for focus, gaming, or distraction-free work.
Many users have multi-monitor setups but want to turn off or dim secondary monitors temporarily without putting the entire computer to sleep. OLED and other displays can also suffer from burn-in or image retention if static images stay on screen too long. Windows’ built-in power settings are all-or-nothing — there’s no per-monitor control.
OLED Sleeper monitors each screen for activity. When a monitor is idle for a set time, it will either black it out or dim its brightness based on your preference.
Benefits include:
- Protecting OLEDs from burn-in
- Creating a distraction-free workspace
- Temporarily sleeping secondary monitors while gaming or working
- Saving energy on idle screens
- Three Idle Detection Modes: Customize how the application determines if a monitor is idle:
- Mouse: Tracks cursor movement specifically on the target monitor.
- Focused Application: Tracks activity within the active window currently displayed on that monitor.
- System-Wide Input: Tracks overall keyboard and mouse input across the entire system (similar to standard Windows idle detection).
- Per-Monitor Control: Blackout or dim any monitor independently.
- Two Action Modes: Full blackout or dimming (DDC/CI supported).
- Instant Wake-Up: Restore the monitor immediately when activity is detected.
- Native WPF Application: Built from the ground up using native Win32 calls. Requires no external dependencies or third-party tools.
- Operating System: Windows 10 or 11
- DDC/CI Support (for Dimming Mode): Dimming requires a monitor that supports DDC/CI brightness control via VCP codes. Most modern monitors support this, but it is not guaranteed on all displays.
- Download the latest installer from the Releases page.
- Run the installer and follow the on-screen prompts. During installation, you will be prompted to configure automatic startup and create shortcuts.
- Open OLED Sleeper from your Start Menu or desktop shortcut.
- Use the interface to select your target monitors, choose your preferred idle detection mode, and set your idle timers.
- Apply your settings. The application will minimize to the system tray and run in the background.
This project is licensed under the MIT License - see the LICENSE file for details.