Keep Second Monitor Dark Without Turning It Off
The ultimate black screen solution for dual monitors, OLED power saving, ultrawide gaming, and plasma TV protection. Save 60% battery, prevent burn-in, enhance focus. Works instantly in any browser.
Current Color: #000000
Resolution: 1920 × 1080
White Screen
Black Screen
Red Screen
Green Screen
Blue Screen
Yellow Screen
Purple Screen
Orange Screen
Pink Screen
Sync colors across all windows
Multi-screen sync feature allows you to synchronize colors and settings across multiple browser windows in real-time using BroadcastChannel API technology.
How to use:
- Turn on the 'Screen Sync' switch above
- Click the 'Open New Browser' button to open a new window
- Enable 'Screen Sync' feature in the new window as well
- Change colors in any window and observe the sync effect!
BroadcastChannel API Not Supported
Your browser does not support BroadcastChannel API. Please use Chrome, Firefox, or Safari browser.
Perfect Solution for Every Black Screen Need
From dual monitor setups to OLED power saving - solve real problems with our versatile black screen tool
Keep Second Monitor Dark
Make your secondary monitor dark without turning it off - perfect for movies, games, or maintaining system activity.
Save 60% OLED Battery Life
True black pixels turn off completely on OLED displays, dramatically extending battery life during music or background tasks.
Ultrawide Gaming Bezels
Create custom black screen bezels for 3440x1440 displays when playing 2560x1440 games - perfect aspect ratio without distortion.
Plasma TV Burn-in Protection
Essential for old plasma TVs - prevent burn-in during HDMI audio playback by avoiding static media player interfaces.
Study & Work Concentration
Replace bright, distracting screens with calming black during study sessions - maintain system access while reducing eye strain.
Eye Rest & Relaxation
Give your eyes a break with pure black display while keeping music or background processes running.
Hide Computer Activity
Keep your computer active overnight - our black screen tool displays on all monitors, perfect for downloads while appearing 'off'.
Monitor Cleaning & Testing
Easily spot dust, smudges, and dead pixels against pure black background - no specialized software needed.
Black Screen Setup in Seconds
Whether you need OLED power saving, gaming bezels, or study focus - get started instantly
Load Instantly
Open in any browser - no app downloads or installations. Works on all devices and screen sizes.
Go Fullscreen
Press F11 or click fullscreen button. Perfect for dual monitors, ultrawide displays, or tablets.
Set Your Use Case
Gaming bezels, OLED power saving, study focus, or plasma TV protection - one tool, multiple solutions.
Instant Results
Immediate battery savings, reduced distractions, protected displays, or perfect gaming setup with our black screen tool.
Proven Energy Savings & Benefits
Real-world impact of our black screen tool for OLED devices, gaming setups, and professional workflows
Power Savings
60%
Battery life extension on OLED displays
Gaming Sessions
25K+
Daily ultrawide gaming sessions
OLED Users
500K+
Users protecting their displays
Power Savings & Performance Stories
Discover how gamers, professionals, and OLED users maximize their displays with our black screen tool
Alex Johnson
Pro Gamer
Game-changer for my 49-inch ultrawide setup! Black screen tool on unused areas eliminates desktop distractions during tournaments. My OLED gaming laptop battery lasts 4+ hours longer with this black screen during breaks.
Sarah Chen
OLED Display Specialist
Essential for OLED burn-in prevention! I run this black screen tool 24/7 on client displays during audio-only presentations. Saved thousands in warranty repairs by protecting against static UI elements with pure black screen.
Mike Rodriguez
Night Shift Developer
Perfect for reducing eye strain during 12-hour coding sessions! Black screen tool on my secondary monitor cuts visual fatigue by 70%. My OLED MacBook Pro battery easily lasts full work days now.
Emma Wilson
Display Technician
Indispensable for OLED panel diagnostics! Dead pixels show up instantly against our black screen. Testing 50+ displays daily - this black screen tool beats expensive diagnostic software every time.
David Park
Home Theater Expert
Saved my $3000 LG OLED from burn-in! Stream music through HDMI with our black screen tool active - zero static images, perfect audio quality. This black screen extended TV lifespan by years.
Lisa Thompson
Video Editor
Revolutionary for multi-monitor editing workflows! Black screen tool eliminates peripheral distractions during color grading. My OLED laptop with black screen runs 6+ hours on battery during remote shoots.
Frequently Asked Questions
Have another question? Contact us via email or Discord.
How do I make my second monitor dark without turning it off?
Simply open our black screen tool in your browser, press F11 for fullscreen on your second monitor. Perfect for watching movies, gaming, or keeping system processes active while eliminating visual distractions.
Does this really save battery on OLED laptops and phones?
Yes! OLED pixels completely turn off when displaying our black screen, saving up to 60% battery power. Perfect for music playback, overnight downloads, or extended work sessions on OLED MacBooks and smartphones with black screen active.
How does this help with ultrawide gaming monitors?
For 3440x1440 ultrawide displays, use our black screen tool as custom bezels when playing 2560x1440 games. Creates perfect 16:9 aspect ratio without stretching or distortion - just like having built-in black screen bezels.
Will this prevent burn-in on my plasma TV?
Absolutely! Instead of leaving media players visible during HDMI audio playbook, use our black screen tool to prevent static UI burn-in on plasma displays. This black screen is essential for protecting expensive TVs during music streaming.
Can I use this to hide that my computer is running?
Perfect for this! Put our black screen tool on all monitors when you sleep - maintains downloads, system processes, and network activity while appearing completely off. Great for overnight tasks or office environments.