Repair dead pixels, stuck pixels, and hot pixels on any screen — monitor, laptop, smartphone, or tablet. Our free browser-based fixer uses rapid color cycling to stimulate and revive malfunctioning pixels with no downloads or installs required.
Follow these six steps to give your dead or stuck pixels the best chance of recovery. The process requires no technical knowledge and works on any device.
Before starting, turn off your screen saver and auto-lock setting on your device. The fixer needs your screen active and uninterrupted for the full repair session.
Critical first stepSet your display to its native resolution at 100 percent scaling. This ensures each software pixel maps to exactly one physical pixel on your screen for accurate targeting.
Recommended settingClick Start Fixer. The flashing square appears on the stage. Each pixel inside the square rapidly cycles through all visible colors to stimulate the malfunctioning area.
Click and launchDrag the flashing square to the exact location of your dead or stuck pixel. Use the background color buttons to help you spot the pixel if it is hard to see.
Precise placementLeave the fixer running for a minimum of one hour. Stubborn stuck pixels may need 8 to 10 hours of continuous stimulation. The session timer tracks your elapsed time.
Minimum 1 hourStop the fixer and examine your screen. If the pixel has recovered, great. If not, run another session. Some pixels recover after a second or third attempt.
Assess and repeatNot all screen defects are the same. Understanding which type you have helps set realistic expectations for repair.
A dead pixel is a permanently black dot on your screen. The electrode controlling it has failed and can no longer respond to any electrical signal, meaning it cannot change color under any circumstances.
True dead pixels are the hardest to fix. However, many pixels that appear dead are actually extremely dark stuck pixels, and these can sometimes be revived with extended fixer sessions.
A stuck pixel is permanently lit in a single color — usually red, green, blue, or white. The pixel is still electrically active but the signal telling it to change color is not working properly.
Stuck pixels respond best to the fixer because rapid color cycling can break the pixel free from its stuck state within minutes to a few hours of continuous stimulation.
A hot pixel appears as a persistently white or very bright dot. All three sub-pixels — red, green, and blue — are stuck in the fully lit state regardless of what the screen is displaying.
Since all sub-pixels are still active, the fixer has a good chance of stimulating them back to normal function with extended use. Hot pixels behave similarly to stuck pixels.
Understanding the repair mechanism helps set realistic expectations. Here is exactly what the fixer does at the hardware level and why it works.
LCD screens work by applying voltage to liquid crystals, which twist to control how much backlight passes through. A stuck pixel has a crystal frozen in one position. Rapidly alternating between colors forces different voltage levels through the pixel electrode many times per second. The resulting micro-vibrations and heat dislodge the stuck crystal and restore its ability to rotate freely, allowing normal color display to resume.
The longer the fixer runs, the more stimulation cycles the pixel receives. Some stuck pixels respond within seconds while others have more stubborn crystalline blockages requiring thousands of cycles before breaking free. Running the fixer overnight dramatically increases the total number of stimulation attempts. There is no upper limit — running it for 8 to 10 hours poses no risk to your screen and only improves the chances of recovery.
Our browser-based tool has meaningful advantages over software downloads and other alternatives.
The fixer runs entirely in your browser. Nothing to install, no account to create, no personal data collected. Works on Windows, macOS, Linux, Chrome OS, iOS, and Android.
Compatible with LCD, IPS, TN, VA, and OLED panels on desktop monitors, laptop screens, smartphone displays, and tablets. Any screen that can run a modern browser works with this tool.
Control the cycling rate from slow to fast. Different pixel types respond better to different speeds. Slower speeds generate more heat per cycle while faster speeds deliver more stimulation attempts per minute.
No premium tiers, no trial periods, no payment. The full tool with all features including draggable square, color selection, speed control, and session timer is free for everyone.
Some guides suggest physically rubbing your screen with a warm cloth while the fixer runs. This carries real risk of permanently damaging the display coating or panel. We do not recommend physical pressure on your screen. Always use the software-based approach first and exhaust all sessions before considering any physical intervention. DeadPixelTest.org and this tool are not responsible for any physical damage caused to your screen.
The fixer needs your screen to stay on continuously for the entire session. Follow the steps for your operating system to prevent your display from turning off.
Everything you need to know about dead pixels, stuck pixels, and how to repair them.