Full Screen Dead Pixel Test
Experience absolute precision with our professional-grade dead pixel test utility. Perfect for hardware validation, color matching, and creating immersive digital environments.
OLED Refresh Timer
How to use Dead Pixel Test
Click the "Enter Fullscreen" button above or press F11.
Your screen will be filled with the selected color.
Check for any discoloration, backlight bleed, or dead pixels.
Press the Escape key to exit fullscreen when finished.
Did you know?
OLED screens benefit from regular color cycling. Using the timer to run a 5-minute cycle can significantly reduce the risk of temporary image retention.
Why this tool is useful
This comprehensive dead pixel test cycles through every primary color plane including red, green, blue, white, and black to expose different types of sub-pixel failures. A truly dead pixel appears black on all screens. A stuck pixel may appear as a bright dot on white but dark on colored fields. A hot pixel glows continuously in one color regardless of the signal. Document your dead pixel findings with a smartphone photo to support a warranty or return claim with your retailer or manufacturer.