Stuck Pixel Test
A stuck pixel test uses solid color screens to reveal pixels that stay on one color when the rest of the display changes.
High brightness can feel harsh in a dark room. Lower brightness if your eyes feel strained.
Shortcuts: F fullscreen, Esc exit fullscreen where supported, Space controls, 1-9 preset colors, arrow keys cycle test colors. In dead pixel fullscreen, tap to advance and swipe left or right to change colors.
Quick answer
A stuck pixel test uses solid color screens to reveal pixels that stay on one color when the rest of the display changes. Choose a color, open it full screen, adjust brightness if needed, and press Esc to exit where supported.
Summary
| Best for | Finding pixels stuck on one color. |
|---|---|
| Main control | Color presets, brightness, timer and fullscreen. |
| Exit | Press Esc where supported or use the on-screen exit button. |
How to use it
Clean the screen, open fullscreen, and move through red, green, blue, white and black. Pause on any color where a tiny dot stays different from the surrounding screen.
Use the Dead Pixel Test if you want auto-cycle controls and the full color sequence.
Best uses
This page is useful when a pixel looks bright or colored instead of dark. Red, green and blue are the most important colors because they match the main subpixel channels.
Common mistakes
Do not assume a mark is a stuck pixel until you clean the screen. Do not use this page as a repair tool. It helps you inspect only.
Tool category
Browse more tools in Screen Tests.
Related tools
Related guides
FAQ
What does a stuck pixel look like?
It may stay red, green, blue, white or bright while the rest of the screen changes.
Can this repair a stuck pixel?
No. It only helps you inspect the display.