What is a black screen for?
A fullscreen black screen is one of the simplest and most useful tools for maintaining and diagnosing monitors, TVs and OLED panels. By filling the whole screen with pure black, you can easily spot panel defects, clean the screen and reduce eye strain in dark environments.
Clean your monitor and screen
A black background makes dust, smudges and fingerprints stand out clearly against the dark display. It's the first step before wiping with a microfiber cloth: turn on the black screen, lower the brightness if you like, and you'll see exactly which areas need cleaning.
Detect dead or stuck pixels
Pixels that stay lit (stuck pixels) glow against the black background and are very easy to locate. Sweep across the screen corner to corner with the room dimmed to spot any bright dot that shouldn't be there.
Check backlight bleed
On LED and LCD panels, black is produced by blocking light, not turning pixels off. A black screen reveals backlight bleed, edge glow and uneven brightness zones that appear gray instead of deep black.
OLED panel behavior
On OLED displays, black pixels switch off completely, producing near-"true black". A black screen helps confirm panel uniformity and detect any residual glow where black should be absolute.
Eye rest in dark rooms
In low-light rooms, a black screen reduces glare and total light exposure. It's ideal as a night rest mode, a pause screen for movies or projectors, or to block reflections during photo shoots.
How to use this tool
- Click "Full screen". The screen turns completely black instantly.
- Pick a color if you need a different background (white, red, green, blue or yellow).
- Press Esc or click "Exit" to return to the page.
- Download the image in HD, 2K, 4K or 5K if you want to keep the background for offline use.
Black screen to clean your monitor
For effective cleaning, lower the brightness to minimum with the black background active, identify the smudges and wipe with a clean, dry microfiber cloth using gentle circular motions. Avoid alcohol-based products on anti-glare coated screens.
Detect dead and stuck pixels
A dead pixel always appears black and emits no light, while a stuck pixel stays lit in a fixed color (red, green or blue). The black screen is the best way to find stuck ones; then switch to white, red, green and blue for a complete test.
Tip: cycle black → white → red → green → blue to verify brightness, contrast and the consistency of each color channel on your screen.
Download a black screen image
If you prefer an image file instead of the browser mode, use the download panel. The image is generated on your own device in PNG, JPG or WEBP format and in resolutions up to 5K (5120×2880). No data is sent to any server: everything happens locally in your browser.
Frequently asked questions
How do I make my screen black?
Click the "Full screen" button. Your screen will turn completely black. To exit, press the Esc key or click the "Exit" button.
Is a black screen better for your eyes?
In low-light environments, yes. It reduces glare and overall light exposure, which helps reduce eye strain.
Can it detect dead pixels?
Yes. A black screen makes it easy to see pixels that stay lit or glow, since they stand out against the dark background.
Does it work on mobile and tablet?
Yes. It works on any modern browser on smartphones, tablets and computers, with nothing to install.
Can I download the black screen image?
Yes. You can download the black background as a PNG in HD, 2K, 4K and 5K resolutions directly from the page, at no cost.
Other color screens
Besides the black screen, you can activate other full-screen backgrounds for panel testing and contrast comparison: