Black Screen

A black screen is a free online tool that fills your entire display with pure black, the darkest color a screen can produce. Click anywhere on the page or press F to go fullscreen, and press Esc to exit. People use it to find dead pixels, check backlight bleed, save battery on OLED devices, clean their monitor, and remove every visual distraction while working.

How to Use This Black Screen

1. Open the page on any device either computer, phone, tablet, or smart TV browser.
2. Click anywhere or press F to enter fullscreen mode. The entire display turns pure black with no buttons, logos, or overlays.
3. Press Esc (or tap) to exit, or use the download panel to save a black background image from 480p up to 8K, including custom dimensions.

No installation, no sign-up, and nothing runs on your computer except a single black web page. The tool works in Chrome, Firefox, Safari, and Edge.

Black Screen for Dead Pixel and Stuck Pixel Testing

A pure black background is the fastest way to find pixels that are stuck "on." Against pure black, a stuck pixel appears as a tiny glowing dot of red, green, blue, or white that is impossible to miss once the rest of the screen is dark.

To run the test properly:

• Go fullscreen and dim the room lights. Reflections hide faint defects.
• Wipe the screen first, so you don't mistake a dust speck for a pixel fault.
• Scan slowly from corner to corner, about 30 cm from the panel.
• Found a bright dot? It's a stuck pixel (one sub-pixel locked on). A dot that stays dark on our white screen is a dead pixel (no power reaching the pixel).

Run this test within the return window whenever you buy a new monitor, laptop, or TV. Most manufacturers only replace panels above a certain defect count, so documenting faults early matters.

Stuck pixel vs dead pixel: a 60-second check

Test on black first, then white. A defect visible on black but not white is stuck (often fixable). A defect visible on white but not black is dead (usually permanent). A dot visible on both is typically debris on the surface, clean the screen and re-test.

Testing Backlight Bleed, IPS Glow, and Black Uniformity

LCD monitors create black by blocking a backlight that never turns off, so no LCD shows perfect black. A fullscreen black image in a dark room exposes exactly where that blocking fails:

• Backlight bleed : Bright patches leaking from the edges or corners of the panel. It stays in the same place no matter your viewing angle.
• IPS glow: A silvery sheen near the corners of IPS panels that shifts or disappears when you move your head. Glow is a panel characteristic, not a defect.
• Uniformity problems: Broad zones that look dark gray instead of black, usually from uneven backlight diffusion.

Set brightness to your normal working level, go fullscreen on this page, and view the panel straight-on from your usual seating distance. Severe bleed visible at normal brightness is a legitimate reason to exchange a monitor.

Black Screen on OLED: True Black and Battery Saving

OLED and AMOLED panels work differently from LCD: each pixel emits its own light, so a black pixel is simply switched off. That has two practical effects.

True black. On an OLED screen, this page should look indistinguishable from the screen being powered down. If you see faint gray or glow, check for reflections, adaptive brightness, or a screen protector before suspecting the panel.

Real battery savings. Because black pixels draw almost no power on OLED, displaying this page consumes a fraction of what a bright desktop or wallpaper does. That applies to iPhones (iPhone 12 and newer), Samsung Galaxy and Pixel phones, OLED laptops, and OLED TVs. On LCD screens the backlight stays on regardless of content.

Keep a Monitor Dark Without Turning It Off

Sometimes you want a dark screen but the computer is busy. Open this black screen fullscreen on the display you want to silence while the machine keeps working:

• Second monitor during movies or gaming : Kill the glow from the side display without unplugging it or losing your window layout.
• Overnight downloads, renders, or uploads : The room stays dark while the work finishes.
• Streaming and recording setups:  A black secondary display won't reflect in glasses or glass surfaces on camera.

This beats the monitor's power button in one specific way: your windows stay exactly where they were.

Black Screen for Cleaning Your Monitor or TV

Fingerprints, smudges, and dust are nearly invisible on a busy desktop but stand out sharply against solid black. Go fullscreen, raise the brightness slightly, and every mark on the glass shows up at once. Wipe with a dry microfiber cloth, no sprays directly on the panel then re-check on the same black background to confirm you got everything. For dark dust on dark borders, flip to the white screen and check again.

Focus, Eye Comfort, and Late-Night Use

A bright display in a dark room forces your pupils to constantly readjust, which is a common cause of late-night eye strain. Filling the screen with black removes that brightness without shutting anything down so the music keeps playing, downloads keep running, but the light is gone.

People use this page as:

• A "visual mute" while thinking, writing on paper, or taking a call.
• A minimal backdrop behind a single floating window, black fills the rest of an ultrawide monitor so only your work is lit.
• A wind-down screen before sleep, dimmer than any wallpaper or dark mode.

Black screens reduce brightness, not blue light specifically. If you want warm light late at night, our orange screen is the better tool.

Black Backdrop for Photography, Video, and Presentations

A fullscreen black display doubles as production equipment:

• Negative fill : A black screen absorbs light instead of bouncing it, deepening shadows on one side of a portrait the way a black flag does.
• Background for product shots: A tablet or monitor showing pure black is a free, perfectly even black backdrop for small objects.
• Presentation blackout: Switch to a black tab between sections to bring the audience's eyes back to you (the same effect as pressing B in PowerPoint, but it works in any app, browser, or video call).
• Editing reference : Checking footage against true black makes crushed shadows and matte edges easy to judge.

Prevent Burn-In on OLED and Plasma TVs

Static images i-e channel logos, paused video, game HUDs are what cause permanent burn-in on OLED and plasma panels. If you're using a TV for music over HDMI or leaving a source connected with nothing to watch, a fullscreen black screen is the safest thing to display: on OLED the pixels switch off entirely, and on plasma the panel stays uniform instead of etching a static logo into the phosphors.

Does a Black Screen Save Electricity?

Yes. A black screen saves electricity on OLED and AMOLED displays because each black pixel switches off completely and draws almost no power. On an LCD the saving is small, because the backlight stays on no matter what color the screen shows.

A monitor left on a bright desktop keeps drawing power even when nothing useful is on it. Filling the display with a blank black screen lowers that draw, and on OLED panels it cuts it sharply. Across a full workday, or a machine left running overnight, that adds up. It is a simple way to reduce energy use and a little of your carbon footprint without shutting anything down, and it costs nothing to try.

Black Screen as a Dark Game Background

A pure black fullscreen placed behind a game window fills empty bezels and black bars with true #000000, so unused screen space stays invisible when a game runs below your monitor's native resolution.

When a game runs at a smaller resolution than your display, for example a 2560×1440 game on a 3440×1440 ultrawide, you are left with bright borders that should be black but rarely are. Open this pure black screen fullscreen on the monitor first, then launch the game in a window on top. The unused pixels stay genuinely black instead of glowing dark gray, the empty space disappears, and your eyes stay on the game. The same method cleans up the gaps behind any windowed or non native resolution app.

Black Screen as a Canvas for Digital Art and Design

A pure black background shows color and contrast at their truest, which is why designers and digital painters judge artwork against full black. Against a true black frame every accent color appears at its real saturation, and your eye does not adapt to a lighter surround and mislead you.

Open this page fullscreen behind a floating art or design window, or on a second monitor, to see how a piece holds up against pure black before you commit to it. Highlights read at their real brightness, dark tones show whether they hold detail or crush to nothing, and color casts that a gray or white background would hide become obvious. It is the same reference point galleries use when they mat artwork in black.

Black Screen for Classrooms, Projectors, and Kids

A blank black screen works as an instant "eyes up here" signal in classrooms and a calm "lights off" moment for children, with nothing to install and nothing to unplug.

On a projector or smartboard, switching to a full black screen makes the slide vanish so attention comes straight back to the teacher, then one tap brings the lesson back. At home, a calm black screen on a tablet or TV gives a restless child a quiet pause without darkening the whole room. Because it is just a web page, it opens the same way on a school projector, a phone, or a classroom display, in any modern browser.

Black Screen as a Sleep and Wind-Down Aid

A pure black screen is safe to leave on for hours overnight, because it gives off almost no light, and on OLED effectively none, while the device keeps running.

Many people leave a full black fullscreen on for a long stretch, through a nap, overnight, or while winding down, rather than turning the device off. The room stays dark while the machine stays active: music playing, a download finishing, an alarm armed. It is gentler than any wallpaper or dark mode, and unlike sleep mode it never asks you to log back in. This is also the easiest way to get a plain "black screen for 10 hours" without a video: go fullscreen and leave the page open.

Download a Black Screen Background (480p to 8K)

Need a black image file instead of a live page? Use the download panel at the top to save a pure black background at 480p, 720p, 1080p, 1440p (2K), 2160p (4K), 4320p (8K), or any custom width and height in pixels. Common uses: phone and desktop wallpapers that save OLED battery, black slides for presentations, filler frames in video editing, and printable test images.

Frequently Asked Questions

Is a black screen better for your eyes?

In a dark room, yes  it removes the brightness mismatch between the screen and your surroundings, which is a major source of evening eye strain. In a bright room the benefit is small, because your eyes are adapted to ambient light anyway. Black reduces brightness, not blue light.

Does a black screen save battery?

On OLED and AMOLED displays, significantly black pixels are switched off and draw almost no power. On LCD screens the backlight stays lit no matter what's displayed, so savings are minimal. Check your panel type first.

What is the hex code for pure black?

Pure black is #000000 , red 0, green 0, blue 0. Every pixel value at its minimum. Anything above that (like #0a0a0a) is technically a very dark gray.

Why does my black screen look gray instead of black?

Three usual causes: you're on an LCD panel, where black is backlight being blocked rather than light being absent; your brightness is set high, amplifying the leakage; or room light is reflecting off the glass. Lower the brightness and dim the room. On OLED, the screen should then look completely off.

How do I make my whole screen black?

Open this page and click anywhere or press F. The browser enters fullscreen and the display turns pure black edge to edge. Press Esc to return. On iPhones, Safari limits fullscreen for web pages, so add the page to your home screen or simply rotate to landscape for the largest black area.

Does leaving a black screen on use less power than a screensaver?

On OLED and AMOLED screens, yes. A pure black screen keeps most pixels switched off, while a moving screensaver lights pixels constantly. On an LCD there is little difference, because the backlight stays on for both.

Can I use a black screen behind a game to hide the empty borders?

Yes. Open the black screen fullscreen on your monitor, then run the game in a window on top. The black fills the unused space at true #000000, so the borders stay invisible when the game runs below your screen's native resolution.

Is it safe to leave a black screen on all night?

Yes. A pure black fullscreen gives off almost no light and, on OLED, draws almost no power, so it is fine to leave it on overnight while the device keeps running. It is a common way to get a black screen for several hours without playing a video.

Why do artists and designers use a pure black background?

A true black background shows color and contrast accurately. Accent colors appear at their real saturation and highlights at their real brightness, so the work is easier to judge than it is against a gray or white surround.

Will my computer go to sleep while the black screen is on?

That depends on your system's power settings, not on this page. If you want the screen to stay black without sleeping  for example while downloads run, set your display sleep timer to "never" temporarily, or keep the mouse on the black-screen window.

Does this black screen work on phones, tablets, and smart TVs?

Yes. It's a plain web page, so it runs in any modern browser on Windows, macOS, Linux, Android, iOS, and smart TV browsers. Nothing is installed and nothing changes your device settings.

Is this tool really free?

Completely. No account, no watermark, no download required for the live screen, and the background images are free for personal and commercial use.

Related screens: Test for dead pixels (dark dots) with the white screen · Key out backgrounds with the chroma-key green screen · Preserve night vision with the red screen · Wind down with warm light on the orange screen