Screen Uniformity Test

Check your screen, display, or monitor for even brightness and backlight bleeding.

Screen Uniformity Test

Use the test patterns below to check for backlight bleeding, vignetting, and brightness uniformity across your display.

Black Uniformity & Backlight Bleed Test

Click to view fullscreen black. Look for light leaking from edges (backlight bleed) or bright spots.

Click for Fullscreen Black Test

White Uniformity Test

Click to view fullscreen white. Check for darker areas or color tinting across the screen.

Click for Fullscreen White Test

Gray Uniformity Test

Click to view fullscreen 50% gray. This is the best test for spotting brightness variations.

Click for Fullscreen Gray Test

Color Uniformity Test

Test different colors to check for color uniformity issues.

Red
Green
Blue
Yellow
Cyan
Magenta

Grid Pattern Test

Use this grid pattern to check for geometric distortion and uniformity.

Click for Fullscreen Grid Test

How to Test Screen Uniformity

  1. Dark Room: Test in a dark room for best results, especially for backlight bleed detection.
  2. Black Test: Look for light leaking from edges or corners (backlight bleed).
  3. Gray Test: The 50% gray test is best for spotting brightness variations and vignetting.
  4. Color Tests: Check each color for uneven tinting or brightness issues.
  5. Multiple Angles: View the screen from different angles to check for uniformity issues.

What to Look For

  • Backlight Bleed: Light leaking from edges, especially in dark scenes.
  • Vignetting: Corners or edges appear darker than the center.
  • Bright Spots: Localized areas that appear brighter than surroundings.
  • Color Tinting: Uneven color cast across the screen.
  • Clouding: Patchy, cloud-like brightness variations.

Click anywhere or press ESC to exit