Troubleshooting
Open the test in fullscreen and cycle solid red, green, blue, white, and black while scanning for a dot that stays in the same spot. This can help identify a stuck pixel (often a tiny colored point) versus a dead pixel that often stays dark, though results vary by panel.
Pro tip
Use normal brightness and check several solid colors, then compare with different content to rule out retention.
Common symptoms
- Tiny dot stays dark
- Single pixel stays colored
Use dead pixel test oled to check whether a small dot stays in the exact same spot across solid colors. You see a colored pinprick on a plain wallpaper and want a quick way to verify it before a return window closes. Open the test, go fullscreen, then cycle red, green, blue, white, black, and gray.
Many users think screenshots prove a dead pixel, but screenshots only capture what the system renders, not the physical panel. The key distinction is dead vs stuck. Dead usually stays dark, stuck often stays as a colored point. On IPS and VA panels, a stuck pixel may be more noticeable on a single color, while a dead pixel often stays dark across several colors. With OLED panels, switching between pure colors and near-gray can reveal defects you miss in normal content. If you only notice the dot in one game or one website, repeat the same fills in a different tab to rule out rendering quirks.
To get a fair result from dead pixel test oled, keep it simple: - Scan slowly from corner to corner, then repeat from a comfortable viewing distance. - Use fullscreen mode so borders and UI do not distract you. - Set brightness to a normal level, then repeat at slightly lower and higher brightness to see if the dot changes. Then drag a window behind the spot. If it never moves, it is unlikely to be an app overlay.
A quick check is screenshots. If the dot shows up inside screenshots when viewed on another device, it is software or the image itself, not the panel. If it never appears in screenshots but shows on every solid fill, that points to the screen.
Run the full version on the main tool page for cleaner fullscreen patterns: dead pixel test tool. For related display checks, use the Display tests. Finish by repeating dead pixel test oled once more after a reboot or a different app, then decide if it is worth support or a return.