Step by step
- Open the tool on this page and press Full screen to test your display.
- Press the arrow keys to cycle through black, white, red, green, and blue.
- Inspect solid bright colors for faint ghost images, which indicate burn-in from past static content.
- Double-click, double-tap, or press Esc to exit the test.
At a glance
| Display state | OLED pixel behavior | Burn-in risk |
|---|---|---|
| Pure black screen | Pixels switched off | None |
| Bright static UI | Pixels lit continuously | Higher over long periods |
| LCD screen | Backlight on, liquid crystals block light | No permanent OLED burn-in |
Related questions
Does a black screen save battery on OLED phones?
Yes. Because black pixels are turned off on OLED and AMOLED screens, displaying black uses very little power.
Does a black screen save battery on LCD monitors?
The saving is small on LCD screens because the backlight stays on behind the black pixels.
How do I check if my OLED screen already has burn-in?
Go full screen and use the arrow keys to switch to white, gray, red, green, or blue. Existing burn-in shows up as faint shadows on solid colors.
What is the difference between burn-in and a dead pixel?
Burn-in looks like a faint ghost of an old image, while a dead pixel is a single tiny dot that stays dark on every color.
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Updated November 14, 2026.