Panel & Backlight
Dead Pixel Test
Full-screen solid colors to find dead, stuck, and bright pixels.
▶ Start full-screen testBlack← / → or tap the sides to switch · Esc to exit
How to use
- 1Set your display brightness to maximum and clean the screen.
- 2Click Start to enter full-screen, then use ← / → or tap the sides to change colors.
- 3Scan each solid color slowly across the whole panel.
- 4A dot that stays black on every color is a dead pixel; a dot stuck on one color is a stuck pixel.
- 5Found a stuck pixel? Go to the last frame, Stuck-pixel fixer, drag the box over it and tap the box to start flashing. Press Esc to exit.
FAQ
What's the difference between a dead and a stuck pixel?
A dead pixel stays black on every color because it receives no power. A stuck pixel is permanently lit in one color (red, green, or blue) and can sometimes be revived by rapidly flashing colors.
Can I fix a stuck pixel?
Sometimes. Rapidly cycling colors over the stuck area, or gently massaging it, can unstick it. Dead pixels usually cannot be fixed in software.
Does this work on phones and TVs?
Yes. It works in any modern browser on phones, tablets, laptops, monitors, and smart TVs.
Tips
- Clean the screen first — a speck of dust looks exactly like a dead pixel.
- View each color from ~30cm away so a single off pixel actually stands out.
- Found a stuck (not dead) pixel? Use the Stuck-pixel fixer frame and leave its flashing box over the pixel for 10–20 minutes to try to revive it.
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Related guides
Learn more about what this test reveals and how to act on the results.
Dead vs Stuck vs Hot Pixels: How to Tell Them ApartThree different defects look similar but behave differently. Identify which one you have — and whether it's fixable.How to Fix a Stuck Pixel: 4 Methods Worth TryingFlashing, the pressure method, and tapping — how to try each on a stuck pixel, how long to give it, the honest odds, and when to claim warranty instead.How to Test a Laptop Screen for Dead PixelsA step-by-step guide to checking a new or used laptop display for dead and stuck pixels before it's too late to return it.What Causes Dead Pixels (and How to Avoid Creating Them)Manufacturing defects, pressure, heat, and age all kill pixels. Here's what's actually in your control, and what makes a new one appear.