A lightweight, 100% browser-based, interactive tool designed to detect and help revive dead or stuck pixels on modern displays. Fully responsive and optimized for Desktops, iPhones, iPads, Android devices, and high-resolution screens (4K/5K/8K/OLED).
📺 Live Demo: https://heretool.com/dead-pixel-checker-screen-test
- Fullscreen Diagnostic Test: Cycles through 8 essential solid color spectrums (Black, White, Red, Green, Blue, Yellow, Magenta, Cyan) to accurately reveal dead, stuck, or hot pixels.
- Stuck Pixel Fixer: Features a high-frequency color flashing algorithm designed to stimulate and potentially revive lazy or stuck sub-pixels.
- Cross-Platform Compatibility: Works out of the box on mobile and desktop web browsers without installing any extensions or applications.
- Enhanced User Experience: - Utilizes the Screen Wake Lock API to prevent the display from sleeping during inspection.
- Implements keyboard shortcuts (Arrow keys, Space, ESC) for seamless desktop navigation.
- Minimalistic UI with zero dependencies.
- Click the "Start Fullscreen Test" button.
- Tap the screen, press the Spacebar, or use the Right Arrow key to advance to the next color background. Use the Left Arrow key to return to a previous color.
- Carefully inspect your monitor on each color layer for any dots that mismatch the background.
- Press ESC or finish the color cycle to exit.
- Click the "Run Stuck Pixel Fixer" button.
- Let the rapid color flasher run over the affected area for 10 to 30 minutes.
- Tap anywhere or press ESC to stop.
- HTML5 (Semantic Structure)
- CSS3 (Flexbox, Responsive Media Queries, Fullscreen Overlays)
- Vanilla JavaScript (Fullscreen API, Screen Wake Lock API, DOM Event Handlers)
This project is licensed under the MIT License - see the LICENSE file for details.