Dead Pixel Test
Got a new monitor or buying a used laptop? Solid full-screen colors reveal problems instantly.
Fill the screen with solid colors to spot bad pixels
Click, Space or → for the next color, ← to go back, Esc to exit.
Clean the screen first, then scan every area slowly from about 30 cm. No flashing is used.
This tool runs entirely in your browser. Nothing you add is uploaded to any server.
Last checked: · Made by Fingertip Workshop
How to use
- 1
Clean the screen first.
- 2
Click Start for full screen.
- 3
Scan every area in each color. Click for next, right-click or ← for previous.
- 4
Press Esc when done.
What to look for
Black reveals stuck bright pixels and bleed; white reveals dead pixels; red, green and blue reveal sub-pixel faults; gray shows uneven areas.
FAQ
Does it flash?
No — colors only change when you click.
Phones and TVs?
Yes, any device with a browser.
Can stuck pixels be fixed?
Flashing "fixers" are unreliable and can be unsafe for photosensitive people, so we don't offer one.