Screen Test Online

✓ 免費線上螢幕測試，查亮點、漏光與色偏

Check any display for dead pixels, backlight bleed, color banding and geometry — full screen, free, nothing to install.

• 🎨 Eight solid color screensBlack, white, red, green, blue, cyan, magenta and yellow reveal dead or stuck pixels, dust, smudges and backlight bleed.
• 🌈 Gradient and banding checkA black-to-white ramp plus RGB ramps show whether your panel renders smooth gradients or breaks them into visible bands.
• ⬛ Shadow and highlight detailA 32-step grayscale plus fine 0–15 and 240–255 steps expose crushed blacks and blown highlights from bad contrast or gamma.
• 🌸 Color cast and saturationA hue wheel and a color chart with a neutral gray reference row make even a slight white balance shift easy to spot.

完整指南、教學與常見問題 →