About
What is this?
Dead Pixel Detector is a free browser-based tool to help you identify dead or stuck pixels on any display — monitor, laptop, phone, or tablet. No downloads required.
How it works
The tool displays solid colors (black, white, red, green, blue) and patterns that cover your entire screen. By examining each screen carefully, you can spot pixels that don't match — these are likely dead or stuck.
Privacy
This tool runs entirely in your browser. We don't collect personal data, require login, or track usage. Your screen test is completely private.
Disclaimer
This tool is for detection only. Dead pixels are typically permanent hardware defects and cannot be fixed through software. If you find defective pixels on a new display, contact your manufacturer about warranty options.