Dead Pixel Test Online

Full-screen pure color palette (Black, White, Red, Green, Blue) to inspect monitors, TVs, and phone displays for dead or stuck pixels. Typical uses include inspecting brand-new monitors, laptops, and TV screens upon delivery, checking for warranty replacement eligibility before return windows close, and diagnosing backlight bleed and OLED burn-in retention. The focused Screen Dead Pixel Test workflow is intended for people who need a dependable result without opening a larger desktop application or creating an account for a one-off task.

Utilizes the HTML5 Fullscreen API to fill 100% of the display viewport with pure sRGB color values, allowing direct visual inspection of LCD and OLED sub-pixels. Its controls cover full-screen pure color canvases (Black, White, RGB, CMY), cycle colors with mouse click, spacebar, or arrow keys, identifies dead (black), stuck (colored), and hot (white) pixels, and includes sub-pixel line patterns and screen burn-in inspection grids. The tool accepts screen Click / Key. It produces full Screen Canvas that can be reviewed before it is saved.

Clean your monitor screen with a microfiber cloth before testing to avoid mistaking dust particles for dead pixels. When Screen Dead Pixel Test is marked as in-browser, its work remains on the current device; available memory, processor speed, browser support, permissions, and source quality can still affect the result. Keep the original material supplied to Screen Dead Pixel Test until its full Screen Canvas has been checked for the intended use.