How do I make the black screen fullscreen?
Click the preview or use the Fullscreen button. Browsers require a direct user action before entering fullscreen, and you can exit with Escape or the device's back gesture.
PNG images can be up to 4096 × 4096 pixels.
Open a pure black screen in fullscreen for backlight bleed, bright pixel, OLED, and dark-room display checks. Choose another color or download a PNG.
A black screen helps reveal bright stuck pixels, backlight bleed, clouding, and light leaking around a display. It is also useful when a second monitor should remain on without drawing attention.
Choose a preset or custom color before opening the preview in fullscreen. Press Esc to leave fullscreen, then adjust the color and open it again.
For a better display check, view several colors in a dim room and keep the browser zoom at its normal level. The tool displays solid browser colors; it does not calibrate the monitor or repair pixels.
Click the preview or use the Fullscreen button. Browsers require a direct user action before entering fullscreen, and you can exit with Escape or the device's back gesture.
View the black screen in a dim room and look for bright stuck pixels, glowing edges, cloudy patches, or uneven light. Some glow is caused by panel technology and viewing angle rather than a defective pixel.
Yes. Choose another preset or enter a custom color, then select a resolution and download a PNG up to 4096 by 4096 pixels.