Test your monitor for dead pixels, stuck pixels and color accuracy with full-screen solid colors. No installation needed.
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Click a color below to fill the screen. Use fullscreen for best results. Look for stuck or dead pixels.
This tool helps you detect dead pixels, stuck pixels, and color accuracy issues on your monitor or display. By displaying solid colors across the entire screen, any pixel defects become clearly visible.
A dead pixel is a pixel on your screen that remains black regardless of what is being displayed. It no longer lights up and appears as a tiny black dot.
A stuck pixel is a pixel that remains one color (usually red, green, or blue) regardless of the image being displayed. Unlike a dead pixel, it still emits light but is stuck on one sub-pixel color.
Stuck pixels can sometimes be fixed using pixel exerciser tools or gentle pressure. Dead pixels are usually permanent and may require screen replacement if under warranty.
Yes, this tool works on any device with a web browser, including smartphones, tablets, laptops, and desktop monitors.