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.
Click the preview or Fullscreen to enter. Tap the fullscreen view or move the pointer to reveal the exit button, which hides after a few seconds. Esc also exits. If native fullscreen is unavailable, the view fills the page and browser controls may remain visible.
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 Fullscreen to enter. Tap the fullscreen view or move the pointer to reveal the exit button, which hides after a few seconds. Esc also exits. If native fullscreen is unavailable, the view fills the page and browser controls may remain visible.
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.