Check your new monitor
Monitor Dead Pixel Test
Inspect dead or stuck pixels on your monitor with nine fullscreen solid colors, including white, black, and RGB.
Your input is not stored on our server
Move this window to the monitor you want to inspect and check the surface for dust. Inspect the whole display and its edges slowly.
Choose a test color
Controls and cursor hide after 2.5 seconds. Move the mouse or press H or Tab to show them. On touchscreens, long-press to show controls.
Selected color preview
White#FFFFFF
Look for dots that remain dark.
Click · Space · → Next / ← Previous / 1–9 Color / H Controls / Esc Exit
A visual inspection tool. It does not automatically diagnose or repair pixels.
How to use Dead Pixel Test
Fill your display with solid colors to visually inspect dark pixels, continuously lit pixels, and dots that differ from their surroundings. Start a fullscreen test or cycle through nine colors automatically without installing anything.
Recommended workflow
- 1.Move the browser window to the monitor you want to inspect and check the surface for dust.
- 2.Choose a color and start the fullscreen test.
- 3.Inspect the entire display and its edges. Click or use arrow keys to change colors, or run one automatic cycle.
- 4.Press Esc or Exit to return. Record persistent suspicious spots with a camera.
Dead Pixel Test output checks
- Look for dots that remain dark.
- Look for dots that stay brightly lit.
- Look for dots with a different color.
- A visual inspection tool. It does not automatically diagnose or repair pixels.
Processing method
Nine solid colors, fullscreen, keyboard, click and touch navigation, and automatic cycles at 3, 5, or 10 seconds are supported.
How files and inputs are handled
This tool processes files and inputs in the current browser. OneClickTool does not receive or store the original content on its own server.
Frequently Asked Questions
Does this automatically detect dead pixels?
No. A browser cannot read the physical condition of your display panel. Inspect the colors yourself; completing the test does not certify a defect-free monitor.
What should I look for on white, black, and RGB?
Look for dark dots on white, continuously bright dots on black, and dots with a different color on red, green, and blue. Check that a suspicious dot is not surface dust.
How do I test multiple monitors?
Move the browser to the monitor you want to test before starting fullscreen. Test one display at a time, exit, and move the window to the next monitor.
What if fullscreen is unavailable?
The test fills the browser window instead. Browser chrome is outside the test area; maximize the window or retry in a browser that supports fullscreen.
Can this repair pixels or determine warranty eligibility?
This tool does not repair pixels or decide warranty coverage. Photograph persistent defects and check the policies for your specific product with the manufacturer or seller.
Supported Scope
Nine solid colors, fullscreen, keyboard, click and touch navigation, and automatic cycles at 3, 5, or 10 seconds are supported.
Physical pixel defects cannot be automatically detected or repaired. Photograph persistent defects and check the policy for your specific product.
Recommended Tools
Tools commonly used with this task.