Monitor Test: Dead Pixels, Backlight Bleed, Burn-in & Ghosting Check
Comprehensive monitor test suite: check for dead pixels, backlight bleed, IPS glow, OLED burn-in & motion ghosting. Free diagnostics for all screens.
Click the button above to enter fullscreen mode. Press ESC or click anywhere to exit.
Black Screen Test - IPS Glow vs Backlight Bleed Detection
This black screen test displays a pure black (#000000) fullscreen to help you detect dead pixels and backlight bleeding on your monitor or TV. Dead pixels appear as tiny lit dots against the black background, while backlight bleeding shows as lighter areas around the edges - a common issue with LCD and LED displays. Use this quick test to check display quality when unboxing a new monitor or troubleshooting screen issues.
đ¤ When to Use Black Screen Test
The black screen test is perfect for quick dead pixel detection. Use it when:
- âĸ Checking a new display for manufacturing defects
- âĸ Quick quality verification before purchase
- âĸ Troubleshooting display issues
- âĸ Routine display quality checks
âšī¸ Black Screen Test vs Dead Pixel Tester
Black Screen Test
Quick, single-color test focused on dead pixels. Perfect for fast checks and initial screening.
Dead Pixel Tester
Comprehensive diagnostic tool that cycles through multiple colors (red, green, blue, white, black) and includes pattern modes. Best for thorough testing of both dead and stuck pixels.
đ Related Display Tests
More Screen Tests
Pixel & color tests
Comprehensive pixel testing with color cycling and solid screens.
Calibration Tests
Color accuracy & quality
Check color accuracy and gradient banding with professional patterns.
This black screen test displays a pure black (#000000) fullscreen to help you detect dead pixels and backlight bleeding on your monitor or TV. Dead pixels appear as tiny lit dots against the black background, while backlight bleeding shows as lighter areas around the edges - a common issue with LCD and LED displays. Use this quick test to check display quality when unboxing a new monitor or troubleshooting screen issues.
How to Use Color Palette & Display Tester
Starting the Black Screen Test
Click "Black Screen Test" or press keyboard shortcut 'B' to activate a fullscreen black screen. The screen will turn completely black, making any dead pixels (pixels that don't light up) clearly visible as darker spots or black dots.
Inspecting for Dead Pixels
Carefully examine the entire screen for any pixels that appear darker or don't light up. Dead pixels will stand out as black dots against the black background (they may appear slightly different due to backlighting). Move your view across the entire screen systematically.
Exiting the Test
Press any key, click anywhere on the screen, or press Escape to exit the black screen test. For a more comprehensive test, try the Dead Pixel Tester which cycles through multiple colors.
Calculator Features
Dead Pixel Detection
Fullscreen black display makes dead pixels clearly visible as darker spots or non-illuminating dots on your screen.
Backlight Bleeding Check
Reveals backlight bleeding and light leakage around screen edges, common issues with LCD and LED displays.
Quick One-Click Test
Instant fullscreen activation with keyboard shortcut (B) for rapid display quality checks.
Complete Function List
- Pure black (#000000) fullscreen display:
- Dead pixel detection:
- Backlight bleeding visibility:
- IPS glow assessment:
- Quick keyboard shortcut (B):
- Click-to-exit functionality:
- Works on all display types:
- No installation required:
Common Calculations & Examples
Example 1: Checking for Backlight Bleeding on a New Monitor
Problem: You want to assess backlight uniformity on your new LCD or LED monitor
Steps:
- Wait until evening or darken your room
- Set your monitor brightness to 100%
- Run the black screen test in fullscreen
- Look at all four corners and edges for light leakage
- Note any clouding or uneven brightness patches
Explanation: Some backlight bleeding is normal on edge-lit LED monitors. Excessive bleeding that's visible during normal use may indicate a defect worth returning.