Dead Pixel Tester
Solid color screen

Black Screen

Open a pure black screen online for OLED power saving, dead-pixel checks, backlight bleed and focus. Download a black AVIF background for display testing.

Black Screen AVIF background

Black Screen for testing and lighting

A pure black screen turns pixels off where the panel allows it, making bright defects and unwanted glow easier to spot. It is useful for OLED and AMOLED power saving, monitor inspection, video work and keeping a second display dark while the computer stays active.

  • Reveal bright, stuck pixels, backlight bleed and IPS glow on a dark panel.
  • Reduce visible light on OLED or AMOLED displays while a device remains on.
  • Keep a second monitor dark during a film, game, recording or presentation.
Fullscreen tips

Open fullscreen before inspecting the display. Lower room light and clean the panel first so dust, tint and pixel defects are easier to see.

Follow the complete dead pixel test guide

How to use Black Screen online

  1. 1

    Open a pure black fullscreen

    Launch fullscreen and let your eyes adjust. On OLED displays, a true black field should switch most pixels off rather than showing a gray glow.

  2. 2

    Inspect for glow and bright pixels

    Check the corners and edges for backlight bleed, IPS glow, bright stuck pixels or clouding. Repeat at normal brightness before documenting a defect.

  3. 3

    Download a black AVIF

    Select a display resolution and download a pure black background for video editing, a second monitor or a dark room setup.

Common questions about Black Screen

Does a black screen save OLED battery?

Usually. OLED and AMOLED pixels emit their own light, so black pixels can switch off and use less power than a bright desktop or wallpaper.

What should I see on a healthy black screen?

The center should look uniform and dark. Small differences around edges can be panel glow; bright dots that stay fixed may be stuck or hot pixels.

More screen tools

Free browser-based utilities for testing, lighting and creating screen backgrounds.

Color Screen

Open any solid color full screen or download it as an image.

Screen Light

Turn your display into an adjustable warm or cool light source.

Gradient Generator

Build, preview and export smooth two-color backgrounds.

Screen Information

Inspect resolution, pixel density, viewport and display capabilities.