White Screen

什麼是 White Screen？

White Screen is a free, browser-based monitor testing tool — no downloads, no sign-ups. Use it to: 🔴 Detect dead or stuck pixels with solid color screens 💡 Spot backlight bleed using a full black screen 🎨 Check color accuracy and gradient rendering 📐 Download white/black/color screens in 1080p, 2K, 4K, or 8K Works on any browser, any OS. Fully client-side — your data never leaves your device.