Dead Pixel Test
Find dead or stuck pixels on your monitor, laptop or phone with full-screen color tests. Free online screen test.
✓ 100% free ✓ No sign up ✓ Runs in your browser — nothing uploaded
Preview — go fullscreen for the real test
In fullscreen, click or press → / Space to cycle colors. A dead pixel stays black on every color; a stuck pixel shows the same bright color everywhere. Esc to exit.
How to use Dead Pixel Test
- 1Open Dead Pixel Test — it works right on this page.
- 2Use the controls above.
- 3Copy or download the result. No sign up needed.
Questions
Is Dead Pixel Test free?
Yes. Dead Pixel Test is 100% free with no limits, no watermark, no sign up and no email required.
Is my data sent anywhere?
No. Everything is calculated locally in your browser. Nothing you type is sent to or stored on any server.
Does Dead Pixel Test work on my phone?
Yes. Dead Pixel Test works in any modern browser on iPhone, Android, Windows, Mac, Linux and Chromebook. No app or install needed.
Do I need to create an account?
Never. There is no sign up, no login, no email and no paywall. Just open the page and use it.