Black Screen Full Screen Online
Black Screen – 100% Full Screen Online Tool for OLED Testing, Dead Pixel Check and Eye Comfort
Live Preview
Click for Fullscreen
Overlay a grid with auto-contrast color
Choose Your Color
White
Black
Red
Green
Blue
Yellow
Orange
Pink
Purple
Cyan
Gray
Zoom Light
Custom
Perfect for monitor testing, photography lighting, and presentations.
Black Screen.
OLED & Dead Pixel Test Tool.
The Black Screen tool is the go-to solution for OLED and AMOLED display testing. A pure black background makes stuck or bright pixels immediately visible — something much harder to spot on a white or colored screen. WhiteScrn.com instantly fills your entire display with a solid, uniform black surface.
A fully black screen also helps save battery life on OLED devices, since black pixels consume virtually no power. Use it during breaks, presentations, or any time you need to blank your display cleanly. It also reveals fingerprints and dust against the dark surface, making screen cleaning quick and precise.
Other Screen Colors
Check for stuck and hot pixels, or use a pure black background.
A soft pink fullscreen for lighting, backgrounds and video.
A warm yellow fullscreen for backgrounds and color tests.
Test for red subpixel defects, or use a red screen for night-friendly viewing.
Free warm white fullscreen for soft, even fill light on video calls and streams.
A fake cracked-screen prank in fullscreen.
Use Cases
What Is a White Screen Used For?
From checking a new monitor to lighting a video call, here are the most common ways people use a fullscreen white display.
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Dead pixel testing
A solid white display makes black dots (dead pixels) easy to spot on new monitors, laptops, phones and TVs, so you can return a faulty panel in time.
Run a white screen test -
Screen cleaning
Dust, fingerprints and smudges stand out on a bright, uniform background. Wipe the screen with it powered off, then turn it back on to check for missed spots.
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Video call lighting
Use a warm white fullscreen as soft, even fill light for Zoom, Teams and streams when your room is dim.
Try Zoom lighting -
Photography and small subjects
A bright screen works as a free, diffuse light source for close-up and product shots. It is no replacement for studio lighting, but it is handy in a pinch.
Use your screen as a light -
Backlight uniformity checks
Look for uneven brightness, color tint or backlight bleed across the panel. The pixel grid overlay helps you scan the display systematically.
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Stuck and hot pixel checks
Switch to black, or cycle red, green and blue, to find pixels that stay lit and to identify which subpixel is affected.
Open the black screen
How Black Screen Full Screen Tool Works?
The Black Screen tool fills your entire display with a pure, uniform black surface instantly — no downloads or installation needed. It's the most reliable way to identify dead pixels, stuck pixels, and backlight bleed on OLED, AMOLED, and LCD screens. A completely black display forces any defective pixel emitting light to stand out immediately against the dark background, making issues impossible to miss.
Preview
Settings
Ready to Test? Go Full Black Screen.
The Black Screen Onlineinstantly fills your entire display with a pure, uniform black surface — perfect for OLED dead pixel detection, backlight bleed testing, and battery saving on AMOLED devices. Activate with a single click or a fullscreen toggle likeF11.