Dead Pixel Buddy - The Tool to Detect Dead Pixels

Dead Pixel Buddy: The No-Frills Screen Checker That Just Works

Ever bought a shiny new monitor and wondered if every single pixel showed up for work? That's exactly the itch Dead Pixel Buddy scratches. It's a dead-simple, browser-based tool that floods your screen with solid colors so any dead or stuck pixels stick out like a sore thumb. No downloads, no signup, no nonsense. You click, the screen changes color, and you squint at your display hunting for tiny traitors. It's been around for ages and stays refreshingly minimal.

The homepage cuts straight to the chase: a grid of clickable color swatches, black, white, red, green, blue, and a few others, each one launching a full-screen test. There's a quick explainer on how dead pixel testing works, tips on spotting stuck versus dead pixels, and a nudge to cycle through every color since some faults only show against certain backgrounds. Press a key, swap colors, done.